Making -5 VDC
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Posts: 46,084
Another way to make -5 VDC is to use a 7667 IC and two capacitors (?). As I
do not have the schematic in front of me I cannot remember how many
capacitors you need or how much current the 7667 produces but in any
application I have them in, it did the job well. HTH (always another
solution to the problem).
Regards,
Gerry Shand
Instrument, Controls and Electrical Engineer
Hood Technical Consultants
#201, 9440-49 Street
EDMONTON, AB
T6B 2M9
Phone (780) 496-9073
Fax: (780) 496-9075
e-mail: gshand@h...
www.hoodtech.ca
>
> Message: 3
> Date: Tue, 23 Oct 2001 05:46:32 -0400
> From: Kevin Olalde <kolalde@h...>
> Subject: Re: Re: LCD compatibility for BASIC STAMP 1.....
>
> http://www.epanorama.net/psu.html#lowvoltage
>
> John Walton wrote:
> > I've seen this suggestion before, about the negative supply voltage on
> > LCD's. I'm sorry, but I have to ask: How the heck does one supply
> > -5v? Sorry for the stupid question, but I don't know!
>
do not have the schematic in front of me I cannot remember how many
capacitors you need or how much current the 7667 produces but in any
application I have them in, it did the job well. HTH (always another
solution to the problem).
Regards,
Gerry Shand
Instrument, Controls and Electrical Engineer
Hood Technical Consultants
#201, 9440-49 Street
EDMONTON, AB
T6B 2M9
Phone (780) 496-9073
Fax: (780) 496-9075
e-mail: gshand@h...
www.hoodtech.ca
>
> Message: 3
> Date: Tue, 23 Oct 2001 05:46:32 -0400
> From: Kevin Olalde <kolalde@h...>
> Subject: Re: Re: LCD compatibility for BASIC STAMP 1.....
>
> http://www.epanorama.net/psu.html#lowvoltage
>
> John Walton wrote:
> > I've seen this suggestion before, about the negative supply voltage on
> > LCD's. I'm sorry, but I have to ask: How the heck does one supply
> > -5v? Sorry for the stupid question, but I don't know!
>