QV04-7 @ The Valve Museum

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QV04-7

Sensibly equivalent^¶ to:

CV309 CV1510 VT510

See also:

Mullard TX Valves Advert - Olympia Show 1947 - Mullard QV04-7 Advert - Mullard QV04-7 Advert

Extras ▼

Mullard G8LSD Valve Collection Other QV04-7 exhibits

Our specimen of QV04-7 is incorrectly labelled by the previous owner. The actual designation was a CV number but this can not be read.

This single beam tetrode looks like an early all glass envelope design. The output is modest and the dissipation high in relation to the output. This suggests use as a frequency multiplier rather than a class C power amplifier. Alternatively the design was just not efficient.

The wide glass tube envelope is 32 mm in diameter and, excluding the B9G base pins, is 58 mm tall.

References: Data-sheet & ¹⁰⁴⁰. Type QV04-7 was first introduced in 1946. See also 1946 adverts.

Pin Connections

B9G	1	2	3	4	5	6	7	8	9
	h	a	g2	g2	bp,s	k	g1	bp,s	h

Absolute Maximum Operating Conditions^¶

Beam Tetrode	Vh	Ah	Va	Vs	Vg	mAa	mAs	mAg	Pout	Pdiss	freq	f.max
	6.3	0.6	300	250	-50	44	6	0.4	7.7	7.5	60M	150

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated November 04, 2020.

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