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Driving Nixie Tubes — Parallax Forums

Driving Nixie Tubes

ArchiverArchiver Posts: 46,084
edited 2003-01-28 00:16 in General Discussion
Hi All,

Anyone have thoughts on the best way to drive Nixie tubes from a Stamp?

Thanks,

Jonathan

www.madlabs.info

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2003-01-22 18:34
    Hi...

    What are Nixie Tubes?

    Perplex, Kai
    Original Message
    From: "Jonathan Peakall" <jpeakall@m...>
    To: <basicstamps@yahoogroups.com>
    Sent: Wednesday, January 22, 2003 6:53 PM
    Subject: [noparse][[/noparse]basicstamps] Driving Nixie Tubes


    > Hi All,
    >
    > Anyone have thoughts on the best way to drive Nixie tubes from a Stamp?
    >
    > Thanks,
    >
    > Jonathan
    >
    > www.madlabs.info
    >
    >
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    > from the same email address that you subscribed. Text in the Subject and
    Body of the message will be ignored.
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-22 19:12
    > Hi...
    >
    > What are Nixie Tubes?

    Essentially, 7-segment displays in a vacuum tube. They were the
    original "digital" text display technology.

    You can find them in old HP counters and computer equipment. If
    you are much younger than about 30, you probably havent' run into
    them.

    Mark Hillier, VE6HVW
    President, HVW Technologies Inc.
    Canadian Distributors of Parallax Products and other Neat Stuff
    Tel: (403)-730-8603 Fax: (403)-730-8903
    http://www.HVWTech.com
    ** New Breadboard Voltage Regulator (BVR) -A plugable +5 Volt
    power supply !
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-22 19:20
    Off the top of my head... They are in 8 pin tubes. One pin is common and
    the other 7 drive a digit. I believe they require 70 volts DC to light
    them up. So you would need something to buffer the Stamp from the high
    voltage and something to generate the 70 volts.

    I have 6 Nixie tubes, If I can find them in my junk pile. I always
    thought they would make a great retro looking clock. If someone has
    better info, please post to this list.

    TIA,
    Randy Wahlfeldt
    KC9BFV
    Email: randyw@w...
    Web: http://www.staff.uiuc.edu/~rwahlfel
    Original Message
    From: "Mark Hillier" <Mark@h...>
    To: <basicstamps@yahoogroups.com>
    Sent: Wednesday, January 22, 2003 1:12 PM
    Subject: Re: [noparse][[/noparse]basicstamps] Driving Nixie Tubes


    >
    >
    > > Hi...
    > >
    > > What are Nixie Tubes?
    >
    > Essentially, 7-segment displays in a vacuum tube. They were the
    > original "digital" text display technology.
    >
    > You can find them in old HP counters and computer equipment. If
    > you are much younger than about 30, you probably havent' run into
    > them.
    >
    > Mark Hillier, VE6HVW
    > President, HVW Technologies Inc.
    > Canadian Distributors of Parallax Products and other Neat Stuff
    > Tel: (403)-730-8603 Fax: (403)-730-8903
    > http://www.HVWTech.com
    > ** New Breadboard Voltage Regulator (BVR) -A plugable +5 Volt
    > power supply !
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    > from the same email address that you subscribed. Text in the Subject
    and Body of the message will be ignored.
    >
    >
    > Your use of Yahoo! Groups is subject to
    http://docs.yahoo.com/info/terms/
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-22 19:26
    Hi
    Your most probably best driving a NPN transistor with a high Vce (>300V)
    from a stamp pin, to ground the appropriate cathode. The Nixies I used
    30 odd years ago (built a digital clock using TTL logic) I think had a
    common anode and needed about 250 Vdc via a resistor (50K ish). You then
    grounded the cathode to "illuminate" the required number. Collector
    current is pretty insignificant, but be careful 250VDC hurts. I think
    they were "cold cathode" devices (it's a long time ago, so my memory is
    a bit vague).

    Rob
    Original Message
    From: Jonathan Peakall [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=rA-WIpMCS5TaY2LlHBIPlVxf6cOsD2nlupZ9XRmCiNoVxENU-415jAkVZtkQRmN7Qv0xaqBNEU045zOJ4bKz_w]jpeakall@m...[/url
    Sent: 22 January 2003 17:54
    To: basicstamps@yahoogroups.com
    Subject: [noparse][[/noparse]basicstamps] Driving Nixie Tubes

    Hi All,

    Anyone have thoughts on the best way to drive Nixie tubes from a Stamp?

    Thanks,

    Jonathan

    www.madlabs.info




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  • ArchiverArchiver Posts: 46,084
    edited 2003-01-22 19:37
    Hello Jonathan:

    A Nixie tube is a form of Neon lamp and has the same driving requirements. The
    tube has 11 contacts, a common and one for each of the 10 wires that is formed
    into the digits 0 through 9. For some ideas on driving Nixis tubes check out:
    http://www.electricstuff.co.uk/nixclock.html
    http://www.amug.org/~jthomas/clockpage.html
    or do a Google search on "nixie clock".

    Years ago I built a decade counting stage using the then very new Fairchild 723
    RTL logic flip-flop in a ring "Johnson" counter that drove a Nixie tube using a
    transistor rated for about 100 Volts on each of the 10 digit pins.

    Have Fun,

    Brooke Clarke, N6GCE
    http://www.prc68.com


    > Date: Wed, 22 Jan 2003 09:53:53 -0800
    > From: "Jonathan Peakall" <jpeakall@m...>
    > Subject: Driving Nixie Tubes
    >
    > Hi All,
    >
    > Anyone have thoughts on the best way to drive Nixie tubes from a Stamp?
    >
    > Thanks,
    >
    > Jonathan
    >
    > www.madlabs.info
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-22 19:38
    Here's a link to plans for a digital Nixie tube clock. Driving the tubes
    from a Stamp should be similar.

    http://www.electricstuff.co.uk/nixclock.html

    Rich
    Original Message
    From: Jonathan Peakall [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=34glKwaDF-YlM_eGRBC__eHc4V3ttEtxPog54DStlP7f9xC9Yt-AaZRVWYUazm2loka8_maZ2z7gh1sV7Q]jpeakall@m...[/url
    Sent: Wednesday, January 22, 2003 11:54 AM
    To: basicstamps@yahoogroups.com
    Subject: [noparse][[/noparse]basicstamps] Driving Nixie Tubes

    Hi All,

    Anyone have thoughts on the best way to drive Nixie tubes from a Stamp?

    Thanks,

    Jonathan

    www.madlabs.info




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  • ArchiverArchiver Posts: 46,084
    edited 2003-01-22 19:57
    I remember experimenting with Nixie tubes. They are not vacuum tubes at all
    but were NEON filled, operating on the same principle as the neon indicator
    lamps we still see occasionally. There were, I believe 10 separate
    cathodes, each in the shape of a digit, plus a decimal point.
    Nixies were in a "compactron" format glass envelope with 12 pins, one was
    common and the other 11 pins were energized individually to make the
    corresponding element glow. The elements were arranged to allow the least
    obscuration from the other non-selected elements. There was no logic of any
    type within this tube. In 1968, I used the first electronic calculator I
    had ever seen, made by Bourroughs, which had a Nixie display.
    p@


    > Off the top of my head... They are in 8 pin tubes. One pin is common and
    > the other 7 drive a digit. I believe they require 70 volts DC to light
    > them up. So you would need something to buffer the Stamp from the high
    > voltage and something to generate the 70 volts.
    >
    > I have 6 Nixie tubes, If I can find them in my junk pile. I always
    > thought they would make a great retro looking clock. If someone has
    > better info, please post to this list.
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-22 20:28
    Hi Rob, All,

    What I was hoping for is a device like a ULN2003 that can handle the
    voltage. The tubes only need 3mA or so for current draw. Any such device out
    there? Of course, I can just use transistors as you say.

    Jonathan

    www.madlabs.info

    Original Message
    From: "Rob" <robbed666@b...>
    To: <basicstamps@yahoogroups.com>
    Sent: Wednesday, January 22, 2003 11:26 AM
    Subject: RE: [noparse][[/noparse]basicstamps] Driving Nixie Tubes


    > Hi
    > Your most probably best driving a NPN transistor with a high Vce (>300V)
    > from a stamp pin, to ground the appropriate cathode. The Nixies I used
    > 30 odd years ago (built a digital clock using TTL logic) I think had a
    > common anode and needed about 250 Vdc via a resistor (50K ish). You then
    > grounded the cathode to "illuminate" the required number. Collector
    > current is pretty insignificant, but be careful 250VDC hurts. I think
    > they were "cold cathode" devices (it's a long time ago, so my memory is
    > a bit vague).
    >
    > Rob
    >
    >
    Original Message
    > From: Jonathan Peakall [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=LYAMQMmZ8lgnLHUlLQvAjEuadYCZHzavDwFifsUrgEBGhAA2kibNunYmgXy-eYv94yIUHFrYGJVyfE8CFLY]jpeakall@m...[/url
    > Sent: 22 January 2003 17:54
    > To: basicstamps@yahoogroups.com
    > Subject: [noparse][[/noparse]basicstamps] Driving Nixie Tubes
    >
    > Hi All,
    >
    > Anyone have thoughts on the best way to drive Nixie tubes from a Stamp?
    >
    > Thanks,
    >
    > Jonathan
    >
    > www.madlabs.info
    >
    >
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    > from the same email address that you subscribed. Text in the Subject
    > and Body of the message will be ignored.
    >
    >
    > Your use of Yahoo! Groups is subject to
    > http://docs.yahoo.com/info/terms/
    >
    >
    >
    >
    >
    > To UNSUBSCRIBE, just send mail to:
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    Body of the message will be ignored.
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    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-22 22:30
    They are neon tubes with numbers in them. There are 10 elements, with the
    characters 0 through 9 and each one can be lit up separately. They date back
    to way before 7-segment displays.

    If I remember right, there was some sort of project in Nuts & Volts or
    Poptronics several years ago about a nixie tube or fluorescent display
    clock.
    Original Message

    > What are Nixie Tubes?

    > > Anyone have thoughts on the best way to drive Nixie tubes from a Stamp?
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-22 22:33
    You remember those old, heavy HP frequency counters? The original one had 10
    neon bulbs in a vertical column for each digit of the display, and the later
    ones had the nixie tubes. We used one well into the 80's in our shop because
    it was more accurate than the stuff we could buy at a reasonable price.

    I also had one at home along with a Hitchcock VTVM the size of a small
    suitcase with about an 8" meter movement.
    Original Message

    > > What are Nixie Tubes?
    >
    > Essentially, 7-segment displays in a vacuum tube. They were the
    > original "digital" text display technology.
    >
    > You can find them in old HP counters and computer equipment. If
    > you are much younger than about 30, you probably havent' run into
    > them.
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-23 02:26
    There is a Nixie tube clock at:

    http://www.cosmodog.com/nixie.html

    That I have purchased. It's very nice.
    To hook up and interface to the tubes, you can do a google search on
    "Nixie tube clocks" and find numerous circuit examples.

    IIRC, instead of driving a LED display, you drive a high voltage
    transistor which switches the nixie tube digits on and off.
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-23 08:10
    Hi Jonathan,

    The problem is not turning the Nixies numerals on, it's when they're
    off. The collectors of the drive transistor, whether it's a discrete
    device or in an array (such as the DIL ULN type IC's) will have a
    potential difference of 250 VDC collector to emitter. So you need a
    device that can withstand that.
    All the ULN range of devices I've seen only can handle 50 VDC, the
    "MPSA" Range of Transistors are normally good for high voltage (MPSA42
    300 VDC).

    HTH

    Rob
    Original Message
    From: Jonathan Peakall [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=D2hPEImI5UNX5nElJjgJhjY1XxkovxaZ44Huu3znOnYexaIV15Tlgpyrp-6knCjayMOHRT2WyYoMiff_TX0]jpeakall@m...[/url
    Sent: 22 January 2003 20:28
    To: basicstamps@yahoogroups.com
    Subject: Re: [noparse][[/noparse]basicstamps] Driving Nixie Tubes

    Hi Rob, All,

    What I was hoping for is a device like a ULN2003 that can handle the
    voltage. The tubes only need 3mA or so for current draw. Any such device
    out
    there? Of course, I can just use transistors as you say.

    Jonathan

    www.madlabs.info

    Original Message
    From: "Rob" <robbed666@b...>
    To: <basicstamps@yahoogroups.com>
    Sent: Wednesday, January 22, 2003 11:26 AM
    Subject: RE: [noparse][[/noparse]basicstamps] Driving Nixie Tubes


    > Hi
    > Your most probably best driving a NPN transistor with a high Vce
    (>300V)
    > from a stamp pin, to ground the appropriate cathode. The Nixies I used
    > 30 odd years ago (built a digital clock using TTL logic) I think had a
    > common anode and needed about 250 Vdc via a resistor (50K ish). You
    then
    > grounded the cathode to "illuminate" the required number. Collector
    > current is pretty insignificant, but be careful 250VDC hurts. I think
    > they were "cold cathode" devices (it's a long time ago, so my memory
    is
    > a bit vague).
    >
    > Rob
    >
    >
    Original Message
    > From: Jonathan Peakall [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=D2hPEImI5UNX5nElJjgJhjY1XxkovxaZ44Huu3znOnYexaIV15Tlgpyrp-6knCjayMOHRT2WyYoMiff_TX0]jpeakall@m...[/url
    > Sent: 22 January 2003 17:54
    > To: basicstamps@yahoogroups.com
    > Subject: [noparse][[/noparse]basicstamps] Driving Nixie Tubes
    >
    > Hi All,
    >
    > Anyone have thoughts on the best way to drive Nixie tubes from a
    Stamp?
    >
    > Thanks,
    >
    > Jonathan
    >
    > www.madlabs.info
    >
    >
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
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    > and Body of the message will be ignored.
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    >
    >
    >
    >
    > To UNSUBSCRIBE, just send mail to:
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    and
    Body of the message will be ignored.
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    >
    >


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  • ArchiverArchiver Posts: 46,084
    edited 2003-01-23 14:31
    From: "Jonathan Peakall" <jpeakall@m...>

    >Anyone have thoughts on the best way to drive Nixie tubes from a Stamp?

    You can use Allegro HV serial drivers, or sink the cathodes with MPSA42
    transistors which can be driven in turn with HC595 serial drivers. I suggest
    that you join the Nixie group here on Yahoo.

    Cheers

    Derryck
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-23 16:01
    Derek,

    I will check out the Allegro HV serial drivers. I joined the Nixie list
    yesterday.

    Thanks for the input!

    Jonathan

    www.madlabs.info
    Original Message
    From: <derryck@n...>
    To: <basicstamps@yahoogroups.com>
    Sent: Thursday, January 23, 2003 6:31 AM
    Subject: Re: [noparse][[/noparse]basicstamps] Driving Nixie Tubes


    > From: "Jonathan Peakall" <jpeakall@m...>
    >
    > >Anyone have thoughts on the best way to drive Nixie tubes from a Stamp?
    >
    > You can use Allegro HV serial drivers, or sink the cathodes with MPSA42
    > transistors which can be driven in turn with HC595 serial drivers. I
    suggest
    > that you join the Nixie group here on Yahoo.
    >
    > Cheers
    >
    > Derryck
    >
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    > from the same email address that you subscribed. Text in the Subject and
    Body of the message will be ignored.
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-24 14:31
    From: "Jonathan Peakall" <jpeakall@m...>

    >I will check out the Allegro HV serial drivers. I joined the Nixie list
    >yesterday

    Have you made a start on the code yet? I guess a simple counter incrementing
    minutes and hours where appropriate will do, with pulse input from a suitable
    source?

    Cheers

    Derryck
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-26 15:36
    Derryck,

    No start on code yet, I am still collecting hardware. I am going to use an
    Atomic clock to do the timekeeping. If you are interested in code after I
    get to that part, you are welcome to it. Just let me know.

    Jonathan

    www.madlabs.info

    Original Message
    From: <derryck@n...>
    To: <basicstamps@yahoogroups.com>
    Sent: Friday, January 24, 2003 6:31 AM
    Subject: Re: [noparse][[/noparse]basicstamps] Driving Nixie Tubes


    > From: "Jonathan Peakall" <jpeakall@m...>
    >
    > >I will check out the Allegro HV serial drivers. I joined the Nixie list
    > >yesterday
    >
    > Have you made a start on the code yet? I guess a simple counter
    incrementing
    > minutes and hours where appropriate will do, with pulse input from a
    suitable
    > source?
    >
    > Cheers
    >
    > Derryck
    >
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    > from the same email address that you subscribed. Text in the Subject and
    Body of the message will be ignored.
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    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-26 15:43
    Derryck,

    I looked at the Allegro site, and they have many choices of devices. I did
    not see one with high enough voltage to drive Nixie's. Do you have a part
    number?

    Jonathan

    www.madlabs.info

    Original Message
    From: <derryck@n...>
    To: <basicstamps@yahoogroups.com>
    Sent: Friday, January 24, 2003 6:31 AM
    Subject: Re: [noparse][[/noparse]basicstamps] Driving Nixie Tubes


    > From: "Jonathan Peakall" <jpeakall@m...>
    >
    > >I will check out the Allegro HV serial drivers. I joined the Nixie list
    > >yesterday
    >
    > Have you made a start on the code yet? I guess a simple counter
    incrementing
    > minutes and hours where appropriate will do, with pulse input from a
    suitable
    > source?
    >
    > Cheers
    >
    > Derryck
    >
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    > from the same email address that you subscribed. Text in the Subject and
    Body of the message will be ignored.
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-26 16:07
    At 07:43 AM 1/26/03 -0800, Jonathan Peakall wrote:
    >Derryck,
    >
    >I looked at the Allegro site, and they have many choices of devices. I did
    >not see one with high enough voltage to drive Nixie's. Do you have a part
    >number?
    >
    >Jonathan
    >
    >www.madlabs.info

    Jonathan -

    You may want to take a look here for at the 2 digit Nixie Tube driver board.
    It appears all of the information is there, including the PCB layout, all for
    free. http://www.gunnsys.com/nixiedrv.html

    Regards,

    Bruce Bates



    >
    Original Message
    >From: <derryck@n...>
    >To: <basicstamps@yahoogroups.com>
    >Sent: Friday, January 24, 2003 6:31 AM
    >Subject: Re: [noparse][[/noparse]basicstamps] Driving Nixie Tubes
    >
    >
    > > From: "Jonathan Peakall" <jpeakall@m...>
    > >
    > > >I will check out the Allegro HV serial drivers. I joined the Nixie list
    > > >yesterday
    > >
    > > Have you made a start on the code yet? I guess a simple counter
    >incrementing
    > > minutes and hours where appropriate will do, with pulse input from a
    >suitable
    > > source?
    > >
    > > Cheers
    > >
    > > Derryck
    > >
    > >
    > >
    > > To UNSUBSCRIBE, just send mail to:
    > > basicstamps-unsubscribe@yahoogroups.com
    > > from the same email address that you subscribed. Text in the Subject and
    >Body of the message will be ignored.
    > >
    > >
    > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    > >
    > >
    > >
    > >
    >
    >
    >To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    >from the same email address that you subscribed. Text in the Subject and
    >Body of the message will be ignored.
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    >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-26 16:15
    Looks like they are using transistors to drive the segments to me.

    **********

    > >I looked at the Allegro site, and they have many choices of devices. I
    did
    > >not see one with high enough voltage to drive Nixie's. Do you have a part
    > >number?

    > You may want to take a look here for at the 2 digit Nixie Tube driver
    board.
    > It appears all of the information is there, including the PCB layout, all
    for
    > free. http://www.gunnsys.com/nixiedrv.html
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-27 10:49
    Hi Jonathan,

    >I looked at the Allegro site, and they have many choices of devices. I did
    >not see one with high enough voltage to drive Nixie's. Do you have a part
    >number?

    A6810 or A6812 are the devices that were recommended.

    Cheers

    Derryck
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-27 11:46
    http://www.allegromicro.com/datafile/6810.pdf

    Original Message

    > >I looked at the Allegro site, and they have many choices of devices. I
    did
    > >not see one with high enough voltage to drive Nixie's. Do you have a part
    > >number?
    >
    > A6810 or A6812 are the devices that were recommended.
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-27 19:05
    hello.
    a bcd to decimal decoder such as a 7445 with an additional few components
    will do a fine job.
    norm







    >From: <derryck@n...>
    >Reply-To: basicstamps@yahoogroups.com
    >To: <basicstamps@yahoogroups.com>
    >Subject: Re: [noparse][[/noparse]basicstamps] Driving Nixie Tubes
    >Date: Mon, 27 Jan 2003 10:49:46 -0000
    >
    >Hi Jonathan,
    >
    > >I looked at the Allegro site, and they have many choices of devices. I
    >did
    > >not see one with high enough voltage to drive Nixie's. Do you have a part
    > >number?
    >
    >A6810 or A6812 are the devices that were recommended.
    >
    >Cheers
    >
    >Derryck
    >
    >
    >To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    >from the same email address that you subscribed. Text in the Subject and
    >Body of the message will be ignored.
    >
    >
    >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/


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  • ArchiverArchiver Posts: 46,084
    edited 2003-01-27 21:57
    Hi Norm,

    Any schematics or references about this?

    Thanks,

    Jonathan
    Original Message
    From: "norman doty" <normdoty@h...>
    To: <basicstamps@yahoogroups.com>
    Sent: Monday, January 27, 2003 11:05 AM
    Subject: Re: [noparse][[/noparse]basicstamps] Driving Nixie Tubes


    > hello.
    > a bcd to decimal decoder such as a 7445 with an additional few components
    > will do a fine job.
    > norm
    >
    >
    >
    >
    >
    >
    >
    > >From: <derryck@n...>
    > >Reply-To: basicstamps@yahoogroups.com
    > >To: <basicstamps@yahoogroups.com>
    > >Subject: Re: [noparse][[/noparse]basicstamps] Driving Nixie Tubes
    > >Date: Mon, 27 Jan 2003 10:49:46 -0000
    > >
    > >Hi Jonathan,
    > >
    > > >I looked at the Allegro site, and they have many choices of devices. I
    > >did
    > > >not see one with high enough voltage to drive Nixie's. Do you have a
    part
    > > >number?
    > >
    > >A6810 or A6812 are the devices that were recommended.
    > >
    > >Cheers
    > >
    > >Derryck
    > >
    > >
    > >To UNSUBSCRIBE, just send mail to:
    > > basicstamps-unsubscribe@yahoogroups.com
    > >from the same email address that you subscribed. Text in the Subject and
    > >Body of the message will be ignored.
    > >
    > >
    > >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
    > _________________________________________________________________
    > The new MSN 8: advanced junk mail protection and 2 months FREE*
    > http://join.msn.com/?page=features/junkmail
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    > from the same email address that you subscribed. Text in the Subject and
    Body of the message will be ignored.
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-28 00:16
    ill see what i can dig up.
    the last place i remember seeing it is in a ttl or cmos data manual.

    norm







    >From: "Jonathan Peakall" <jpeakall@m...>
    >Reply-To: basicstamps@yahoogroups.com
    >To: <basicstamps@yahoogroups.com>
    >Subject: Re: [noparse][[/noparse]basicstamps] Driving Nixie Tubes
    >Date: Mon, 27 Jan 2003 13:57:31 -0800
    >
    >Hi Norm,
    >
    >Any schematics or references about this?
    >
    >Thanks,
    >
    >Jonathan
    >
    >
    Original Message
    >From: "norman doty" <normdoty@h...>
    >To: <basicstamps@yahoogroups.com>
    >Sent: Monday, January 27, 2003 11:05 AM
    >Subject: Re: [noparse][[/noparse]basicstamps] Driving Nixie Tubes
    >
    >
    > > hello.
    > > a bcd to decimal decoder such as a 7445 with an additional few
    >components
    > > will do a fine job.
    > > norm
    > >
    > >
    > >
    > >
    > >
    > >
    > >
    > > >From: <derryck@n...>
    > > >Reply-To: basicstamps@yahoogroups.com
    > > >To: <basicstamps@yahoogroups.com>
    > > >Subject: Re: [noparse][[/noparse]basicstamps] Driving Nixie Tubes
    > > >Date: Mon, 27 Jan 2003 10:49:46 -0000
    > > >
    > > >Hi Jonathan,
    > > >
    > > > >I looked at the Allegro site, and they have many choices of devices.
    >I
    > > >did
    > > > >not see one with high enough voltage to drive Nixie's. Do you have a
    >part
    > > > >number?
    > > >
    > > >A6810 or A6812 are the devices that were recommended.
    > > >
    > > >Cheers
    > > >
    > > >Derryck
    > > >
    > > >
    > > >To UNSUBSCRIBE, just send mail to:
    > > > basicstamps-unsubscribe@yahoogroups.com
    > > >from the same email address that you subscribed. Text in the Subject
    >and
    > > >Body of the message will be ignored.
    > > >
    > > >
    > > >Your use of Yahoo! Groups is subject to
    >http://docs.yahoo.com/info/terms/
    > >
    > >
    > > _________________________________________________________________
    > > The new MSN 8: advanced junk mail protection and 2 months FREE*
    > > http://join.msn.com/?page=features/junkmail
    > >
    > >
    > > To UNSUBSCRIBE, just send mail to:
    > > basicstamps-unsubscribe@yahoogroups.com
    > > from the same email address that you subscribed. Text in the Subject
    >and
    >Body of the message will be ignored.
    > >
    > >
    > > Your use of Yahoo! Groups is subject to
    >http://docs.yahoo.com/info/terms/
    > >
    > >
    > >
    > >
    >
    >
    >To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    >from the same email address that you subscribed. Text in the Subject and
    >Body of the message will be ignored.
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    >
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