Opto 22
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Posts: 46,084
Has anyone had any experience with the OPTO 22 relay board?
Parallax has a baord for it on back rder, but I'd like my kids to use
one now. They experimented with using the Stamp to operate it.
The Stamp can turn on the relay's LED, but not close the relay
contacts.
I assume it is just a matter of current, but would like to see what
others have doen first. I have some spare ULN2803s to use in the
project.
Paul
Parallax has a baord for it on back rder, but I'd like my kids to use
one now. They experimented with using the Stamp to operate it.
The Stamp can turn on the relay's LED, but not close the relay
contacts.
I assume it is just a matter of current, but would like to see what
others have doen first. I have some spare ULN2803s to use in the
project.
Paul
Comments
Paul
Original Message
From: <verhap@o...>
To: <basicstamps@yahoogroups.com>
Sent: Wednesday, March 12, 2003 6:37 AM
Subject: [noparse][[/noparse]basicstamps] OPTO 22
> Has anyone had any experience with the OPTO 22 relay board?
> Parallax has a baord for it on back rder, but I'd like my kids to use
> one now. They experimented with using the Stamp to operate it.
> The Stamp can turn on the relay's LED, but not close the relay
> contacts.
>
> I assume it is just a matter of current, but would like to see what
> others have doen first. I have some spare ULN2803s to use in the
> project.
>
> Paul
>
> To UNSUBSCRIBE, just send mail to:
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Body of the message will be ignored.
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>
>
>
drive them with the stamp is to use an additional transistor on the output
to trigger the module. This takes the load off the stamp and the drive for
the opto comes from another power supply. For an example how to wire up the
transistors, check out my web site.
http://geocities.com/jimforkin2003/index.html
jim
Original Message
From: galt1x [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=Y0tcF7ck1H7JHFg6-Cfby7n-tCIZnf3_MiIrcpSgMLmuxEO5j6BDj9XY3lnUcz7enz-5ke2l4m0]galt1x@a...[/url
Sent: Thursday, March 13, 2003 9:43 AM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] OPTO 22
Check Ebay.
Paul
Original Message
From: <verhap@o...>
To: <basicstamps@yahoogroups.com>
Sent: Wednesday, March 12, 2003 6:37 AM
Subject: [noparse][[/noparse]basicstamps] OPTO 22
> Has anyone had any experience with the OPTO 22 relay board?
> Parallax has a baord for it on back rder, but I'd like my kids to use
> one now. They experimented with using the Stamp to operate it.
> The Stamp can turn on the relay's LED, but not close the relay
> contacts.
>
> I assume it is just a matter of current, but would like to see what
> others have doen first. I have some spare ULN2803s to use in the
> project.
>
> Paul
>
> 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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the LED side will not cause the output to conduct without present of AC.
Bucky
Original Message
From: <verhap@o...>
To: <basicstamps@yahoogroups.com>
Sent: Wednesday, March 12, 2003 6:37 AM
Subject: [noparse][[/noparse]basicstamps] OPTO 22
> Has anyone had any experience with the OPTO 22 relay board?
> Parallax has a baord for it on back rder, but I'd like my kids to use
> one now. They experimented with using the Stamp to operate it.
> The Stamp can turn on the relay's LED, but not close the relay
> contacts.
>
> I assume it is just a matter of current, but would like to see what
> others have doen first. I have some spare ULN2803s to use in the
> project.
>
> Paul
>
> 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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which are for switching dc, ac, and ac input and dc input modules and all
supporting boards, power supplies, control modules and such.
Jim
Original Message
From: bucky [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=qNP3MW_1qtPiiLIIcO_iyKNL6B4thWanPKcDj6AorCLc_GOc6EziyGu5tHWaQM9HXGnhMD4Iz541wXU]buckys@a...[/url
Sent: Sunday, March 16, 2003 1:22 PM
To: basicstamps@yahoogroups.com
Subject: RE: [noparse][[/noparse]basicstamps] OPTO 22
I may be wrong but if the Opto 22 was for AC loads then applying power to
the LED side will not cause the output to conduct without present of AC.
Bucky
Original Message
From: <verhap@o...>
To: <basicstamps@yahoogroups.com>
Sent: Wednesday, March 12, 2003 6:37 AM
Subject: [noparse][[/noparse]basicstamps] OPTO 22
> Has anyone had any experience with the OPTO 22 relay board?
> Parallax has a baord for it on back rder, but I'd like my kids to use
> one now. They experimented with using the Stamp to operate it.
> The Stamp can turn on the relay's LED, but not close the relay
> contacts.
>
> I assume it is just a matter of current, but would like to see what
> others have doen first. I have some spare ULN2803s to use in the
> project.
>
> Paul
>
> 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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I found a FAQ here:
(http://www.opto22.com/support/optofaq/faq220.asp)
That reads:
Product Support FAQ and Technical Reference
2.20 - SSR Applications subFAQ
Q: What is a solid-state relay?
A: An SSR is a semiconductor device that can be used in place of a
mechanical relay to switch electricity to a load in many applications.
Solid-state relays are purely electronic, normally composed of a low current
"control" side (equivalent to the coil on an electromechanical relay) and a
high-current load side (equivalent to the contact on a conventional relay).
SSRs typically also feature electrical isolation to several thousand volts
between the control and load sides. Because of this isolation, the load side
of the relay is actually powered by the switched line; both line voltage and
a load (not to mention a control signal) must be present for the relay to
operate.
Which confirms my earlier statement.
bucky
Original Message
From: bucky [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=BNsoXCPdkhC5edwb4JDCh0FWMj_MfqRT2Va0HraMan6HiIexrWk34o8FXklKZJEgpMefz9v-IS3q]buckys@a...[/url
Sent: Sunday, March 16, 2003 1:22 PM
To: basicstamps@yahoogroups.com
Subject: RE: [noparse][[/noparse]basicstamps] OPTO 22
I may be wrong but if the Opto 22 was for AC loads then applying power to
the LED side will not cause the output to conduct without present of AC.
Bucky
Original Message
From: <verhap@o...>
To: <basicstamps@yahoogroups.com>
Sent: Wednesday, March 12, 2003 6:37 AM
Subject: [noparse][[/noparse]basicstamps] OPTO 22
> Has anyone had any experience with the OPTO 22 relay board?
> Parallax has a baord for it on back rder, but I'd like my kids to use
> one now. They experimented with using the Stamp to operate it.
> The Stamp can turn on the relay's LED, but not close the relay
> contacts.
>
> I assume it is just a matter of current, but would like to see what
> others have doen first. I have some spare ULN2803s to use in the
> project.
>
> Paul
>
> 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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