Since I was asked about it in another thread... I finally posted some info on my 520B amps. This uses Emission Labs 520B DHTs in push-pull for 45-50 watts out. Details are here: http://www.pmillett.com/520b.html
Beautiful!
I have a very similar circuit for monitoring plate current on my A2 amp using a TLP7920. I feel a little funny running the isolated 5V DC/DC converter with 750V across it continuously (datasheet only indicates short duration tests), but I've been doing it for a long time now with no issues...
I have a very similar circuit for monitoring plate current on my A2 amp using a TLP7920. I feel a little funny running the isolated 5V DC/DC converter with 750V across it continuously (datasheet only indicates short duration tests), but I've been doing it for a long time now with no issues...