people are usually looking for files, without additional informing by reading something about files they have decide to download-and even when they read they remember what someone said how it sounds and similar, but rarely technical details. I believe "connect SGND to psu-gnd" is most written sentence in this thread...
Thanks for helping, but this resistor influences the gain of the amplifier, I made the replacement but still didn't solve it, the bias continues at + -350mV in each 0r33 resistor and does not drop what can be done?
So,...
1) what is C13 there for?
2) why hasn't Mile ever solved this issue? A trick to keep the thread always on top?
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¹)well that is one new theory of conspiracy,latest these days...
²)when you have two or more channels then you connect all their inputs at input connectors,and from them you connect one wire to the psu-gnd. on that way you have omitted ground loop wich is a most common problem with wiring an amplifier.
do you really believe that whole this thread is based on this "trick"? what are you on, really? you should read a bit more...
²)when you have two or more channels then you connect all their inputs at input connectors,and from them you connect one wire to the psu-gnd. on that way you have omitted ground loop wich is a most common problem with wiring an amplifier.
do you really believe that whole this thread is based on this "trick"? what are you on, really? you should read a bit more...
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Sir,
I have connected SGND to PGND by removing C13 (100nF) and replacing with 4.7 Ohms /2W Resistor and measured Bias Voltage at across the Emitter Resistors (at two ends), adjusted POT and obtained 26mV and relay clicked on (taken 3 seconds).
I convey my thanks to all the Members who helped me.
With regards.
I have connected SGND to PGND by removing C13 (100nF) and replacing with 4.7 Ohms /2W Resistor and measured Bias Voltage at across the Emitter Resistors (at two ends), adjusted POT and obtained 26mV and relay clicked on (taken 3 seconds).
I convey my thanks to all the Members who helped me.
With regards.
this is how it should be done properly,to avoid ground loop 100W Ultimate Fidelity Amplifier it is another APEX amplifier but the basics are the same.
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Amplify the base current. By increasing the base current, the collector current greatly increases, thus increasing the voltage over the collector resistor and the output voltage of the circuit decreases.
The little I know is this and I learned here on the forum !! My area is completely opposite to electronics, which is just for hobby and to hear a good sound !!
I made an exchange that you suggested, but it had no effect.
I changed all the transistors, I imagine that not all I have that are defective.
Thanks bigaudio. Being lat-mosfet, it should give around 55-60W rms into 8 ohms.
regards
prasi