rated 10 amperes and has displayed clock
Kirk
Tony [EMAIL PROTECTED] wrote:
To: [EMAIL PROTECTED]
From: Tony [EMAIL PROTECTED]
Date: Sun, 25 Feb 2007 14:23:20 -
Subject: [LittleHouses] Spiffy little digital timers - cheap
Might be useful for various projects around the LittleHouse.
Anyone got a spec on how much power these units draw in order to
maintain their own clock? It matters.
Let's suppose it draws 6 watts. That's not unreasonable for a
mass-production LED clock, timer microprocessor that assumes cheap AC
power is available. That doesn't include whatever power
There are AA battery operated timer chips. Use the alarm output to a timer
circuit. The clck could alarm at midnight and a 6 hour timer enable load to
6AM.
over 15 minutes and you should use a counter/digital timer as analogs looking
at long integration times get a bit unreliable.
Kirk
Thanks Kirk. If time permits, I can see playing around with something
for my own benefit. I expect this is much like the brains of a setback
thermostat. I have one of those that runs on a single AA battery, and
will go for up to two years on a single battery - 7x24. That keeps
accurate
