[BC] Re: Simple question

[David Reaves]

You could even design the 555 timer circuit to include a thermistor
to adjust the timing depending on ambient temperature, with a minimum
of 30 sec., longer when it's colder.


David P. Reaves, III

On Mon, 2 Apr 2007 20:17:23 EDT, WFIFeng at aol.com wrote:
>In a message dated 04/02/2007 7:50:00 PM Eastern Daylight Time,
>rickbras at airmail.net writes:
>
>>Thanks Willie.  I haven't played with one of those little timer
>>chips in a
>>  while.  If all else fails I guess I could hide a small timer
>>circuit beside
>>  the relay.
>>  Rick
>
>Why not just tuck it inside the cabinet? I'm sure there's PLENTY of
>room. ;)
>Then you can use a standard relay, with the 555 ckt & a driver
>transistor
>to power the relay. You could get the power from one of the 6v
>filament
>supplies. A voltage-doubler ckt would give you at least 12-15v,