CV1120 @ The Valve Museum

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CV1120

Sensibly equivalent^¶ to:

NU33 SU2150A VU120

Extras ▼

Unknown The Hampshire Collection Other CV1120 exhibits

The CV1120 is equivalent to the SU2150A from Cossor. Several manufacturers made these EHT rectifiers to the same nominal specification but the Cossor design proved to be the best performing over time. Both Mullard and M-OV manufactured supposed equivalents to the SU2150A but in each case the valves were redesigned to suit factory production methods. The UK Navy insisted on the 'real thing from Cossor.

The maximum reservoir capacitor is 0.25 µF, and the minimum series resistance is 10 kOhms.

The classic envelope is 47 mm in diameter at its widest and excluding the B4 base pins the valve is 111 mm high.

References: Data-sheet, ¹⁰⁴⁰ & ¹⁰⁴³.

Pin Connections

B4	1	2	3	4	tc
	nc	nc	h,k	h	a

Absolute Maximum Operating Conditions^¶

Rectifier	Vh	Ah	Va	mAa
	2.0	1.5	5000	10

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated January 03, 2022.

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