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Have you built it? How does it sound?
As I was informed Mr. Nelson Pass built it. Everything what comes from him sounds perfect.
Place those diodes on top of the mosfets (top diode on bottom mosfet and bottom diode ...).
You mean thermally?
Electrically diodes provide bias conditions for input BJT-s and thus for the whole amp. Output bias should be class-A.
I entertained that idea and I liked it, but I did it in a different manner......P.S. F5 with input BJT-s.
Off course, using Laterals exclude the need for thermal compensation.
1. Basic idea (post #8231):
http://www.diyaudio.com/forums/pass-labs/121228-f5-power-amplifier-165.html#post2227201
2. Working amp (post #6):
Radjanje F5 clone - diyaudio.rs
For some reason, the last time we cleaned out in the old component stock we have thrown out all TO-92 bjt!!!!
So i am building it today with KSC3503 and KSA1381. I think the would be a good substitute besides from the gain. But driven from a Low z source it should not be an issue
So i am building it today with KSC3503 and KSA1381. I think the would be a good substitute besides from the gain. But driven from a Low z source it should not be an issue
For some reason, the last time we cleaned out in the old component stock we have thrown out all TO-92 bjt!!!!
Male - i cannot multitaske
natural talent
Schematic explains itself.
1K trimmer is replaced by a 2k2 fixed and in the negative part 1k + 2k trimmer.
RC top and bottom is set to 2.2k=> more OLG.
BC550 and 560 is replaced by KSC3503 and KSA1381.
at 24V it will settle to about 1.2 - 1.4 amp.
for an equal current in the mosfet an vgs difference on the 10n20 and 10p20 from exicon of about ~1V. This will lead to and offset. Maybe a diode in series with one of the collector resistors will help a lot!?.
I have attached the measurements.
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