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50CD6 is 300mA heater version of 6CD6 beam tetrode. Parameters given are for single-ended audio use with an anode load of 1,500 Ohms. Valve is also specified for push pull service, where it will deliver 13.5 Watts at 1.7% distortion in class A. Unusually the valve was primarily designed for use as a line output stage in television receivers. Anode supply can be 700 Volts, with positive surge of up to 6,000 Volts. Anode dissipation is 15 Watts and screen dissipation 3.0 Watts. Anode current can be 170 mA. Other parameters would be screen voltage of 170 Volts and negative grid surge of -150 Volts.

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