Where to find a dedicated timer?

wrote:


Depends on your specific application.
If you specified operating volts, AC or DC, current, accuracy needed, etc. you might receive a specific answer.
For low accuracy on low voltage DC I use a simple power FET transistor with a capacitor/resistor on the gate, a relay, and a SPST switch. The resistor can be a variable that you adjust to set the time. If the load is DC and not harmed by a slow turnoff, the FET can drive it directly. If brewing your own, look at the old LM555 timer circuits for more accuracy and a definate snap action.
There are 2-inch square timer blocks with a series of small switches to set the time, but they are specific to a voltage and load current. Bill Kaszeta Photovoltaic Resources Int'l Tempe Arizona USA snipped-for-privacy@pvri-removethis.biz
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Doesn't a simple, octal based TDOD timer fill the bill here? That and a momentary switch?
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On Mon, 12 Nov 2007 09:13:12 -0800, "Long Ranger"

Feeding a solid state relay or bank of them... sure.
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