Re: turn on delay

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In Reply to: turn on delay posted by edge on February 14, 2004 at 19:43:08:

I use a 120VAC time delay relay. A 100 ohm 50 watt power resistor mounted on a standoff is in series with the incoming AC to the primary winding. The relay's amount of time delay is set by a small external resistor. As the relay "times out" it bypasses the series resistor. For my solid state amps with lots of capacitance in power supplies I find that a delay of 8 seconds with the 100 ohm resistor works out to be about correct.
I greatly recommend this approach. The 120VAC relay means no power supply to build for the relay. Soft starts help prolong the life of components.

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Follow Ups Full Thread

Topic - turn on delay - edge 19:43:08 02/14/04 (7)

Here's one that's even simpler.... - C.B. 15:26:15 02/15/04 (3)

Re: Here's one that's even simpler.... - edge 16:10:39 02/15/04 (2)

Re: Here's one that's even simpler.... - myheadhertz 16:40:42 02/15/04 (1)

Re: Here's one that's even simpler.... - edge 19:24:53 02/15/04 (0)

Re: turn on delay - edge 22:28:22 02/14/04 (0)

Re: turn on delay - Loves Old Stuff 21:10:58 02/14/04 (0)

Re: turn on delay - smuttner 21:04:23 02/14/04 (0)

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Re: turn on delay - Loves Old Stuff 21:10:58 02/14/04 (0)

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