Power Regulation Advice (links)
Archiver
Posts: 46,084
Hi,
checks out these links.
This talks about steppers mostly, but goes over
power sources. There may be a description on these
pages that will give you what you are looking for.
Sorry I can't point you directly to the answer,
but there are many ways to tackle your needs.
http://www.cs.uiowa.edu/~jones/step/current.html
and
http://www.cs.uiowa.edu/~jones/step/circuits.html
Dave
--- In basicstamps@y..., "Larry Gaminde" <lgaminde@t...> wrote:
> Jameco and others MpJones have power supplies that run three
> voltages you really need 24,12,and 5 not just 24,12 this is one
> unit.
>
Original Message
> From: "Stewart Mayer" <stewlist@k...>
> To: <basicstamps@y...>
> Sent: January 26, 2002 11:22 AM
> Subject: [noparse][[/noparse]basicstamps] Power Regulation Advice
>
>
> Hello,
>
> I've got a question about power supplies. I've got a project
> that
> needs to be able to run off of both 12 and 24 volts and I'm
> afraid
> that the 7805 regulator might burn out after time if run from 24
> volts continuously.
>
> I'd like to limit the voltage that enters the 7805 to 12 volts
> and
> I've heard that you can put a 12volt zener diode, reverse biased,
> across the power terminals. This is supposed to siphon off extra
> voltage (over 12v) so that the voltage output would be limited to
> 12
> volts. However, it seems to me that that approach would
> effectively
> short circuit the extra voltage and could destroy the battery.
>
> If anyone could explain to me if this works or not, or offer a
> better
> solution, I'd appreciate it. I had just thought that the zener
> diode
> approach would be very simple and easy to implement.
>
> Thanks,
> Stewart
>
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@y...
> 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/
checks out these links.
This talks about steppers mostly, but goes over
power sources. There may be a description on these
pages that will give you what you are looking for.
Sorry I can't point you directly to the answer,
but there are many ways to tackle your needs.
http://www.cs.uiowa.edu/~jones/step/current.html
and
http://www.cs.uiowa.edu/~jones/step/circuits.html
Dave
--- In basicstamps@y..., "Larry Gaminde" <lgaminde@t...> wrote:
> Jameco and others MpJones have power supplies that run three
> voltages you really need 24,12,and 5 not just 24,12 this is one
> unit.
>
Original Message
> From: "Stewart Mayer" <stewlist@k...>
> To: <basicstamps@y...>
> Sent: January 26, 2002 11:22 AM
> Subject: [noparse][[/noparse]basicstamps] Power Regulation Advice
>
>
> Hello,
>
> I've got a question about power supplies. I've got a project
> that
> needs to be able to run off of both 12 and 24 volts and I'm
> afraid
> that the 7805 regulator might burn out after time if run from 24
> volts continuously.
>
> I'd like to limit the voltage that enters the 7805 to 12 volts
> and
> I've heard that you can put a 12volt zener diode, reverse biased,
> across the power terminals. This is supposed to siphon off extra
> voltage (over 12v) so that the voltage output would be limited to
> 12
> volts. However, it seems to me that that approach would
> effectively
> short circuit the extra voltage and could destroy the battery.
>
> If anyone could explain to me if this works or not, or offer a
> better
> solution, I'd appreciate it. I had just thought that the zener
> diode
> approach would be very simple and easy to implement.
>
> Thanks,
> Stewart
>
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@y...
> 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/