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The CV1068 is a four in one voltage stabiliser that GEC marketed as the Stabilovolt. The commercial designation is STV280/40 and has a maximum current draw of 40 mA.

The CV1068 has four anodes, and thus four outputs with gaps of 70 volts each. These output voltages are 70, 140, 210 & 280.

The striking voltage is above 420 Volts and the tube current is 5 - 35 mA. The tube voltage regulation is about a couple of Volts for each 70 Volt step.

The heavy anode assembly is secured to the pinch stem with a collar, nut and bolt.

The wide glass tube envelope is 47 mm in diameter and, excluding the B5 base pins, is 124 mm tall.

References: Data-sheet & R J Sutherland. Type CV1068 was first introduced in 1936. See also 1936 adverts.

Pin Connections

Absolute Maximum Operating Conditions^¶

Thanks to Frank Philipse for supplying the above PDF datasheet.