I would be interested in a kit for a matched dual pairs too. Cost may be a consideration, our dollar is crashing against green back.
Alas the same applies to us in Canada.
Dennis
Can anyone recommend a good source for the IRFs in TO-3 to match the Sonys? Thanks
You can try this links for TO-3 case IRF's :
irf240 Stock and Price by Distributor
IRF9240 Stock and Price by Distributor
Other package IRFP's 240/ 9240 do the job as well.
Yes IRF TO-3 look nice with vfet´s together.
Greetings
I have noticed all of the FirstWatt designs use the jfet input gate-stopper and input load resistor
shown as Option A below. Why is this done vs. Option B which does not attenuate the input level?
The F6 uses option B. I prefer that one as well, since it minimizes the connections and parasitics at the sensitive gate.
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I have noticed all of the FirstWatt designs use the jfet input gate-stopper and input load resistor shown as Option A below. Why is this done vs. Option B which does not attenuate the input level?
When I laid the boards out, sometimes it works out with the resistor to
ground in front, sometimes after the input, probably because it's convenient
and really doesn't matter.
Then I go back and change the schematic.
I can do that.
When I laid the boards out, sometimes it works out with the resistor to
ground in front, sometimes after the input, probably because it's convenient
and really doesn't matter.
Then I go back and change the schematic.
I can do that.
he's doing that sort of things to me ....... all the time
that's probably good thing , laughing is extending Papa's life expectancy
These people show some in stock
Aliexpress.com : Buy SONY 2SK82 V FET from Reliable fet transistors suppliers on Eternal HONG's store | Alibaba Group
No idea if they're authentic, though. Any gamblers here?
According to the vendor they are 2SK82 JA-33 grade.
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