Printed circuit boards for these gerberas were ordered twice and there were no complaints from the manufacturer. I fixed the gerberas and uploaded to the manufacturer's website.
Please note that some of the transistors on this board are Russian-made. The wiring of these transistors does not coincide with the generally accepted among world manufacturers. If necessary, I can fix the board for other transistors.
JFET-only Circlotrons without negative feedback. - Share Project - PCBWay
Please note that some of the transistors on this board are Russian-made. The wiring of these transistors does not coincide with the generally accepted among world manufacturers. If necessary, I can fix the board for other transistors.
JFET-only Circlotrons without negative feedback. - Share Project - PCBWay
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PCB without russian semiconductors.
Link for ordering PCB:
JFET-only Circlotrons without negative feedback v2 - Share Project - PCBWay
Link for ordering PCB:
JFET-only Circlotrons without negative feedback v2 - Share Project - PCBWay
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Yurik, is the pinout for the UJ3N power JFETs intended for bottom mounting? (TO247 package, pin order is G-D-S.)
Also, what is the recommended supply voltage range?
Keep up the good work guys, you have my full interest🙂
Also, what is the recommended supply voltage range?
Keep up the good work guys, you have my full interest🙂
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The supply voltage can still be increased, but it is important that the transistors of the differential stage withstand the maximum voltage.
The author of the scheme, Svjatoslav, is still working on increasing capacity.
Valuable suggestions for improving the scheme are welcome.
Alexey Semin:'' JFET is more balanced, better damping. JFETs sound one to one, like a tube amplifier with triodes. Laterals sound like a pentode tube amplifier. So choose who you like.'' 🙂
If Jfet sound like 845
he managed to test Jfet and lateral on the same PCB just by adjusting the potentiometers ?
he managed to test Jfet and lateral on the same PCB just by adjusting the potentiometers ?
The current is adjusted by changing the negative stabilized voltage.
If you look up depletion mosfets on RS Components website you will see Microchip do some high voltage depletion mosfets.
I tried them in my new amp design in the LTP and they worked great.
Just be aware the pin out is mirrored.
Significant difference. No less than in the powerful variants. Because technology is the same.