CV1076 @ The Valve Museum

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CV1076

Sensibly equivalent^¶ to:

DA41 NU40TZ SW40H TZ40 VT76

See also:

Small Power Valves

Extras ▼

GEC The Communications & Electronics Museum Trust Other CV1076 exhibits

The CV1076 is the UK procurement code for the commercial DA41. Our other CV1076 has a carbon anode but this has a metal anode.

It is a magnificent audio triode that was designed so that in class B a pair would deliver 175 Watts at 5% distortion. The anode dissipation is 40 Watts.

The reverse shows that this is a production DA41.

The side view showing the ceramic insulators and mica disc at the top.

The lower ceramic insulator, metal anode and grid winding.

The classic envelope is 51 mm in diameter and, excluding the UX4 base pins, is 137 mm tall.

References: Data-sheet, ¹⁰⁴⁰ & ¹⁰⁴³. Type CV1076 was first introduced in 1939. See also 1939 adverts.

Pin Connections

UX4	1	2	3	4	tc
	f	nc	g1	f	a

Absolute Maximum Operating Conditions^¶

Triode	Vh	Ah	Va	Vg	mAa	Pout
	7.5	3.1	1,000	0	140	175W

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated January 03, 2022.

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