09-04-2021, 11:42 PM
(Seda postitust muudeti viimati: 09-04-2021, 11:43 PM ja muutjaks oli roirex.)
ja jah, neid mul muul tehnikal ennegi puru läinud, kusagilt poest ikka saab, lihtsalt momendil pole võtta.
See bias'e regulli teema diyaudio foorumist.
"Hi,
though this is an old thread, in case someone is fighting with this problem, I'll reveal the secret of the mystery bias resistor:
Tube Dude was right. There is a 1 ohm 1/4W resistor which is shorted during normal operation with a tiny jumper PCB soldered to the solder side of the main board across 2 poles near the bias resistor. So if you measure the voltage at the test points, you're actually measuring voltage loss over this wire!
When the jumper PCB is removed, the bias voltage can be adjusted to 100mV. My amp runs pretty cool after I set the bias correctly.
Before I found the jumper PCB, I set the voltage to 1mV. After removing the jumper, the actual voltage over this 1 ohm resistor was 250mV!
või jahuvad milleski muust?
Link https://www.diyaudio.com/forums/solid-st...-bias.html
See bias'e regulli teema diyaudio foorumist.
"Hi,
though this is an old thread, in case someone is fighting with this problem, I'll reveal the secret of the mystery bias resistor:
Tube Dude was right. There is a 1 ohm 1/4W resistor which is shorted during normal operation with a tiny jumper PCB soldered to the solder side of the main board across 2 poles near the bias resistor. So if you measure the voltage at the test points, you're actually measuring voltage loss over this wire!
When the jumper PCB is removed, the bias voltage can be adjusted to 100mV. My amp runs pretty cool after I set the bias correctly.
Before I found the jumper PCB, I set the voltage to 1mV. After removing the jumper, the actual voltage over this 1 ohm resistor was 250mV!
või jahuvad milleski muust?
Link https://www.diyaudio.com/forums/solid-st...-bias.html