future power suply unit question!

[t.man]

Do you have specific questions about the setup?

yah!

it concerns power button(or power on/off). i've heard one can go the hardware route and use an S-R flip flop eg. 74C74 and use the output to enable/disable the voltage regulator. i.e the 74C series (and the CD4000 series) can take up to 15V supplies, so one could power them from the input to the regulator.

could one provide the circuit setup/wire up of this?
i would highly appreciate your help guys!

 

[Torben]

yah!

it concerns power button(or power on/off). i've heard one can go the hardware route and use an S-R flip flop eg. 74C74 and use the output to enable/disable the voltage regulator. i.e the 74C series (and the CD4000 series) can take up to 15V supplies, so one could power them from the input to the regulator.

could one provide the circuit setup/wire up of this?
i would highly appreciate your help guys!

Perhaps I'm missing something, but what's wrong with just putting a regular old SPST switch between the wall wart and the regulator?


Torben

 

[t.man]

Perhaps I'm missing something, but what's wrong with just putting a regular old SPST switch between the wall wart and the regulator?


Torben

i'd like to use push button switch to power on/off the circuit!

 

[arrie]

t.man, don't complicate things.
Take the advice from theses guys, they know what they are talking about.
But then again, you could swim upstream.

 

[Torben]

i'd like to use push button switch to power on/off the circuit!

I must still be missing something. You can get latching SPST push button switches anywhere. That would give you push-once-for-on/push-again-for-off operation.

Do you mean you must have an electronic switch configuration instead of a nice, simple electrical one? If so, why?


Torben