Quote:
Originally Posted by DonaldStott
There is also another large 32uF cap that has seen better days not on the schematic that connects Tag 2 of the output transformer to the HT smoothing resistor R25?
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The second tag up on the transformer in the photo is No: 1 on the Trader sheet and is connected to ground, the capacitor is likely to be a replacement HT filter capacitor, the fact that the original was 20uF and the replacement was 32uF is not important.
Note that the reservoir and the HT filter capacitors have different -ve connections to the circuit, this is due to the fact that the grid bias voltage for the Mixer and IF valves is obtained from the voltage developed across R24 (Trader Ref.) Hence the reservoir capacitors -ve connection is to the center tap of the HT secondary winding.
Lawrence.