Sorry I did not read entire thread, so maybe someone mentioned about this.
Is this a common way to connect signal ground? It goes to amp board and PSU board and the chassis ground.
Also sorry for my novice question: what's the purpose of D13 and D14 diodes that going across output transistors?
That's not what I see.
The diode between Out and circuit becomes reverse biased when the OUT goes high.
The resistor supplies current to the LED. The LED is ON.
If Out is near GND voltage the diode does nothing, it might be reverse biased, or slightly forward biased. No effect on LED operation.
If OUT is heavily negative, the diode is forward biased and pulls the circuit negative.
Now no current flows through the LED, instead the current flows through the OUT diode.
The Diode turns the LED OFF, when OUT goes -ve.
The diode between Out and circuit becomes reverse biased when the OUT goes high.
The resistor supplies current to the LED. The LED is ON.
If Out is near GND voltage the diode does nothing, it might be reverse biased, or slightly forward biased. No effect on LED operation.
If OUT is heavily negative, the diode is forward biased and pulls the circuit negative.
Now no current flows through the LED, instead the current flows through the OUT diode.
The Diode turns the LED OFF, when OUT goes -ve.
The way I see it is when the "out" is at zero volts the diode feeding the "out" will steal the voltage from the LED. As the voltage on the out goes positive it no longer conducts so the voltage goes through to the LED. Should be easy enough to test.
Hello apexaudio
greetings thank you for your FX100 power supply it works great uploading
vedio showing short circuit protection i am working on your D2000 dclass
warm regards
Andrew
greetings thank you for your FX100 power supply it works great uploading
vedio showing short circuit protection i am working on your D2000 dclass
warm regards
Andrew
pardon me, but i was not able to locate the video. it took me to your facebook page.
reg
Prasi
