CV2225 @ The Valve Museum

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CV2225

Sensibly equivalent^¶ to:

150B2 6354 QS1200 VX8068

See also:

SQ Voltage reference tubes - Keeping Voltages Steady

Extras ▼

English Electric Donation from Jeremy Harmer

The CV2229 (commercially the 150B2) voltage stabiliser has a striking voltage of 165 Volts and over the specified current range will regulate to 5 Volts around the 150 Volts midpoint.

The KB/Q identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the Q identifies the maker as English Electric Valve Co., Chelmsford.

The cylindrical cathode with central rod anode.

The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 45 mm tall.

References: Data-sheet & Data. Type CV2225 was first introduced in 1953. See also 1953 adverts.

Pin Connections

B7G	1	2	3	4	5	6	7
	a	k	ic	ic	ic	ic	ic

Absolute Maximum Operating Conditions^¶

Stabiliser	Va	mAa
	150	5-30

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated May 07, 2025.

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