AC/HL @ The Valve Museum

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AC/HL

Sensibly equivalent^¶ to:

354V 41MHL A30D AR17 CV399 CV1037 CV2811 D4 HL4 MH4 MHL4 NR31 VR37

See also:

Shortpath Construction - 1929 Advert - Valves for Superhets - Adding AVC to the Monodial Super - Parmeko 25-Watt Amplifier Kit

Extras ▼

Mazda The John Lawrence Collection Other AC/HL exhibits

The AC/HL indirectly heated amplifier triode makes use of the 'Shortpath' technique construction.

See AC/HL for full details.

The balloon envelope is 57 mm in diameter and, excluding the B5 base pins, is 110 mm tall.

References: Data-sheet, ¹⁰⁴³ & ³⁰⁰². Type AC/HL was first introduced in 1929. See also 1929 adverts.

Pin Connections

B5	1	2	3	4	5
	a	g1	h	h	k

Absolute Maximum Operating Conditions^¶

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	4.0	1.0	200	-2.75	6	10,000	3.5

PDF scanned from an original document held by the museum

Updated August 09, 2022.

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