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Baby Paws

Tuesday, 11 December 2001

I have received some info from Ian Bird on his "Baby Paws (pause)" timer circuit...

"In brief: This small, 2 ¼" by 1" circuit board is based on a 555 timer chip and a resistor/capacitor combination. It can output a positive (+ve) signal and provide a switched ground for a short time period after being triggered. The trigger can be either a +ve feed or a ground connection. The delay is adjustable using a small screwdriver between milliseconds to more than 10 seconds. Changing two components can make this delay a lot longer, minutes or even hours or days.

Specs
Ã˜ Operates using a voltage of between 5 and 15 volts.
Ã˜ Polarity protection (optional).
Ã˜ Facility for onboard voltage regulator (optional).
Ã˜ Trigger from either a +ve voltage or ground.
Ã˜ Will output a +ve signal (max 100ma) on triggering.
Ã˜ Will supply a ground (max 100ma) on triggering.
Ã˜ Delay adjustable from almost nothing to 10 seconds or more."

Ian's site will be up in the future detailing this and his other projects.

Baby Paws

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