I was curious how the WE 91E single ended power amp can deliver 20 watts with single 300B. Finally I found their US patented paper which is very interesting to read.
Thank you!
What a can of worms. Only had a brief look but this isn't something i would like to own or build. Parafeed + active current source.
Someone at WE has been secretly reading the Pass forum 😊
What a can of worms. Only had a brief look but this isn't something i would like to own or build. Parafeed + active current source.
Someone at WE has been secretly reading the Pass forum 😊
I agree. This is old hat. It is known as a modulated current source for instance, or active current source load, etc. Pass has used it for decades.
It seems you can patent anything these days.
Jan
It seems you can patent anything these days.
Jan
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It's essentially a negative resistance circuit.
By the way, in the Netherlands you can indeed patent anything; as far as I know, checking the novelty of the invention is not required anymore for Dutch patents that last at most six years.
By the way, in the Netherlands you can indeed patent anything; as far as I know, checking the novelty of the invention is not required anymore for Dutch patents that last at most six years.
Member
Joined 2006
Nice to see John agreeing with me 😎
And, to be honest, I use the same principle in my HV direct drive ESL amp ...
Jan
And, to be honest, I use the same principle in my HV direct drive ESL amp ...
Jan