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* High-voltage, using T801, supplying the CRT voltages, +2300 V for the CRT anode and -1700 V for the CRT cathode | * High-voltage, using T801, supplying the CRT voltages, +2300 V for the CRT anode and -1700 V for the CRT cathode | ||
This HV power supply [[6AQ5]] as the HV oscillator tube, and [[12AU7]] as feedback/error amplifier. | This HV power supply uses [[6AQ5]] as the HV oscillator tube, and [[12AU7]] as feedback/error amplifier. | ||
* Collector sweep, using T701 (a variac) and T702, supplying the collector current to the device under test | * Collector sweep, using T701 (a variac) and T702, supplying the collector current to the device under test | ||