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Sensibly equivalent to:
7475 CV1070 E1436 GD100A
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Here we present the CV equivalent of pass-the-parcel. The outer box this brand-new valve came in was 97 x 92 x 187 mm. The top section fits completely over the lower section. The outer label dates this product to 1976. The CV188 voltage stabiliser was designed for accurate regulation. It has a B4 base but the envelope is small and compact. The striking voltage is 140, and once ionisation has occurred the tube can regulate the 100 Volt output to 2 Volts for currents of between 1 and 8 mA. This high stability low current device would be useful for stabilising supplies to oscillators or as a reference voltage in valve voltage stabilisers.
The outer box.
With the top removed two layers of thick embossed paper are then seen.
Out of the box and with the first paper layer removed.
The expanded polystyrene package is within a sealed thick gauge polythene bag.
The twp part expanded polystyrene enclosure.
The valve is wrapped in tissue paper.
Out of the enclosure.
At last the small voltage stabiliser revealed.
The neon discharge takes place at the top of the envelope as the specification calls for the CV188 to be able to be used as an indicator.
The wide glass tube envelope is 29 mm in diameter and, excluding the B4 base pins, is 67 mm tall.
Reference: Data-sheet.


Pin Connections


Absolute Maximum Operating Conditions
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated June 27, 2018.
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