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The CV2966 is a television EHT rectifier and is rated in terms of peak inverse volts (PIV). The PIV for the CV2966 is 22k Volts. If fed from a sine wave the anode voltage would be limited to just under 8k Volts, but driven from the positive peaks of the line output transformer the rectified voltage can be about 17,000 volts. This is sufficient for a medium sized black and white TV. The maximum reservoir capacitor for use with this valve is 0.002 µF, normally the capacitance of the CRT itself is used as reservoir.

The larger cylinder is the connection to the heater and cathode. The heater return is the central rod. In this implementation of the design the open end of the anode is shielded by the cathode cylinder thus minimising the release of soft X-rays.

The anode bell is connected by a single rod to the top cap.

The thin glass tube envelope is 22 mm in diameter and excluding the B9A base pins the valve is 62 mm long.

References: Data-sheet & ¹⁰⁴⁰.

Pin Connections

Absolute Maximum Operating Conditions^¶

Thanks to Frank Philipse for supplying the above PDF datasheet.