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In the Forum: Melquiades Amplifier
In the Thread: R22
Post Subject: News from the war zonePosted by Domidaw on: 1/10/2022
I replaced all the wires, replaced the capacitor C11, C10, returned to the 12w resistor R22, also replaced the L2 choke. Now I sit for over two hours next to amplifier, just like sitting at the bedside of a sick loved one person.
Nothing is burning and it does not heat up much. I put a thermometer from a multimeter on the resistors that were the warmest. After two hours of continuous operation, the R22 resistor has a temperature of 55 degrees Celsius, and the resistor R2 is 72 degrees Celsius.
The voltage across R21 drifts between 179mV and 181mV. Please look at the diagram, the red numbers are the actual measurements .....
I am mentally and physically exhausted (my back hurts enormously) when I waited for a new multimeter and cables, at that time I assembled the preamplifier (diagram below). It was on PCBs so it was easy, but it still took some concentration and some work. So I didn't leave this crazy mental state for even a day.
I look forward to your evaluation of my new measurements ...
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