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I have looked over countless schematics at Stand-By switching looking for ideas on a standby switch that puts less 'strain' on it (i.e. High Voltage, High current).

The standards seem to be:
a) in the B+ chain after a tube rectifier [on the DC side], before the first filter cap; and
b) before the solid state rectifier [on the AC side].


I was thinking of putting the stand-by on the heaters of the tube rectifier. Switching the heaters ON-OFF would mean a 'soft' stand by. An extra few seconds. Any thoughts on that? I have never seen it done.

Has anyone tried any alternatives?

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Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

i've seen some ideas that Kevin O'Conner talks about.

one being the standby is placed on the cathode, but i can't remember if that works for both cathode based bias or fixed bias, i'd have to look it up. His idea is that the HV should remain on the preamp tubes all the time when turned on and only the power tubes would be switched off. his reasoning is that it lessens the surge when the Stby is switched on and it's not a problem to use the amp with a recording out when plugged into a board, etc. I think it;s a pretty good idea when applied to a amp 50 watts or greater, then you could actually use two stdby's, one on the preamp and one on the output tubes, but that could be overkill i guess.

I just stick to the old school personally, but an interesting topic.