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Hitachi MOSFETs - Which Zen Design???
Hitachi MOSFETs - Which Zen Design???
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Old 14th September 2006, 03:27 AM   #1
seagull is offline seagull  Australia
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Default Hitachi MOSFETs - Which Zen Design???

Hi all,

I have a collection of Hitachi 2sj49/2sk134 & 2SJ50/2SK135 mosfets and was wondering which Zen design would be the most suitable for these devices. I have previously constructed the Return-Of-Zen design which would utilise the above devices but I'm curious about whether other NPN/PNP combos might be worth trying. All comments appreciated.


Tks,

CS
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Old 14th September 2006, 03:51 AM   #2
mlloyd1 is offline mlloyd1  United States
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Hitachi MOSFETs - Which Zen Design???
i think it's been mentioned that the lateral family of mosfets (of which the hitachi parts you referred to are members) have too low transconductance to be highly useful in the Zen circuits.

sorry,
mlloyd1
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Old 14th September 2006, 03:57 AM   #3
Babowana is offline Babowana  South Korea
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Default Re: Hitachi MOSFETs - Which Zen Design???

Quote:
Originally posted by seagull



Hitachi 2sj49/2sk134 & 2SJ50/2SK135 mosfets

Times ago, I used these nice things for my high power AB amps.
I miss them, I mean MOSFETS (TO3) . . . very good.

I think that if you know Vgs(th), etc, of them, we might be able to build any Zens, by adjusting resistor values if necessary . . .
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Old 14th September 2006, 07:41 AM   #4
Mad_K is offline Mad_K  Norway
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If you have complimentary pairs, ZV5 comes to mind
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Old 14th September 2006, 08:30 AM   #5
Babowana is offline Babowana  South Korea
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Quote:
Originally posted by Mad_K


If you have complimentary pairs, ZV5 comes to mind

Yeah . . . and I have to live with rather high output impedance . . .

Ahhh . . . that time, Goldmund amps were using 2sj49/2sk134 . . .
I remember so . . .
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