Quote:
Originally Posted by jr_tech
200 volt rating for the 82 uuf cap should be fine, as the 150 k resistor and the 2 33 k resistors in series form a voltage divider network. The total resistance of the divider is 216 k (150+33+33).... 66k out of 216 k is about 30% .... 30% of 265 volts is about 80 volts. When the tube warms up and starts drawing current, the voltage at that point drops about 10 volts more to 70 volts.
jr
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Jr is right about the voltage across the 82 pf increasing every time the set starts up from cold because the tube isn't drawing current. This does point out however that when something is designed that it is difficult to cover all the bases. If the 33K resistors in K4 increase a lot in value or open up then the voltage will be higher. This could also happen if in troubleshooting someone disconnects K4. Its hard to foresee every possibility.