Ah, the joys of clip leads and duct tape
Congratulations sir Rothacher
First lab bench photo from new house
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I see that your thd figures are comparable to some of the prototypes I made with the transformers.
That's welcome news.
Probably too much fuss for general DIY.
New amp design with vfet is never too much.
Sadly matched pairs is very rare actualy.
Acronman source....the old souvenirs.
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The circuit is apparently a thought exercise to build an amp with no fixed resistors. It was implied that this same circuit could be used at 120V 40mA or 40-45V 1.2-1.5A. Perhaps I misunderstood. As a preamp he says:
- THD 1v eff. Output voltage: 0.07%
- THD 10v eff. Output voltage: 0.5%
- THD 20v eff. Output voltage: 1.5%
and provides these scope traces
The Hungarian thread is here:
http://www.avx.hu/forum/index.php?/topic/20255-v-fet-single-ended-amplifier/
- THD 1v eff. Output voltage: 0.07%
- THD 10v eff. Output voltage: 0.5%
- THD 20v eff. Output voltage: 1.5%
and provides these scope traces
The Hungarian thread is here:
http://www.avx.hu/forum/index.php?/topic/20255-v-fet-single-ended-amplifier/
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