Hey all,

New to this forum. Have posted in other electonics forums but still haven't
gotten a clear cut answer to my question.
I have a simple chaser light project being hooked up to my car. So it's 12v
dc control module.
I have 8 lamps that I am connecting 12v power to so when the unit is powered on, ALL the lamps will illuminate at the same time. The problem that I am running into is that after power is initially applied to all the bulbs, I want the power to cease being applied to all the lights simultaneously and "switch" over to the control unit that will start the
chaser sequence.
I have enough electronic knowledge to know that I could use a spdt relay
for this but don't know how to hook it up. I have googled for information on spdt relays and I have an idea of how I might go about it but I would
like to get some "professional" advice.
If anyone could help, that would be greatly appreciated.

Thanks in advance (I hope)!!!!!

 

Perhaps you can share the schematic of your circuit? Maybe the feature can be implemented in a simplier fashion.

hgmjr

 

Well I don't have one ready (have to see if I can find it somewhere).
But basically it's a pic controller (was a kit a bought about 3 years ago,
company long since gone), with 8 transistors to control the output lights.
Don't know if this will help any.

 

Nope, not much help.

hgmjr

 

PIC microcontrollers generally have a maximum Vcc/Vdd of around 5.5v; more than that and they'll get fried. If you're planning on using it in an automotive application, a voltage regulator circuit is a must.

 

It was designed for 12v applications. Again it was a kit I bought a few years ago. Just wanted to give it an "updated feel" to it.
Will try to draw something up that is close to what have (might not be in
schematic form though).

 

Here is one way. Values just guesses.About 1/2 sec as shown.