In my country, TO-220 Vertical Mosfet usually available only NMOS type. It is very cheap. And then, I designed an simple amplifier which use easy to find transistors and cheap. I called it Pelatuk (Woodpecker) NMOS amplifier. It was tested by my a friend.
Bias current is 100mA minimal, but my friend set it 200mA.
Bias current is 100mA minimal, but my friend set it 200mA.
Simulation result:
Phase Margin = 80, Gain Margin = 19
THD at 20W/8Ohm, 1kHz -> 0.008629%
THD at 20W/8Ohm, 20kHz -> 0.030558%
Slew Rate = 134V/uS
PSRR 1kHz -> 97 dB
Phase Margin = 80, Gain Margin = 19
THD at 20W/8Ohm, 1kHz -> 0.008629%
THD at 20W/8Ohm, 20kHz -> 0.030558%
Slew Rate = 134V/uS
PSRR 1kHz -> 97 dB
bimo
Very nice and classic looking design. How does it sound in compare to more classic NPN/PNP designs ?
I am asking because I am working on another hybrid amp and can not decide to go with quasi or complementary. N-type mosfet output stage gives a nice H2 H4 H6 ratio and i like it a lot.
Best regards
Peter
Very nice and classic looking design. How does it sound in compare to more classic NPN/PNP designs ?
I am asking because I am working on another hybrid amp and can not decide to go with quasi or complementary. N-type mosfet output stage gives a nice H2 H4 H6 ratio and i like it a lot.
Best regards
Peter
Fortunately, my friend who built it also built my amplifier same as this amplifier but using BJT NPN/PNP output (double emitter follower). He said, the mid is warmer BJT than NMOS.
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