M8223 @ The Valve Museum

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M8223

Sensibly equivalent^¶ to:

0A2WA CV4020 QS1210

Extras ▼

Mullard Valve Donation by Peter Bates (GM4BYF)

The M8223 shows the final design format of the valve voltage stabiliser, it would strike at 165 volts and the regulation would be 5 Volts for changes in current of 5 - 30 mA around the design voltage of 150 Volts..

This exhibit is a special quality valve.

The plain cathode cylinder.

The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 59 mm tall.

References: Data-sheet & ¹⁰⁴⁰.

Pin Connections

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

Absolute Maximum Operating Conditions^¶

Stabiliser	Va	mAa
	150	30

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated May 18, 2020.

shape:thin.glass.tube construction:all.glass type:voltage.stabiliser age:1950.1960 base:b7g pins:7 pin:1.a pin:2.k pin:3.ic pin:4.k pin:5.a pin:6.ic pin:7.k

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M8223

Sensibly equivalent¶ to:

0A2WA CV4020 QS1210

Extras ▼

The M8223 shows the final design format of the valve voltage stabiliser, it would strike at 165 volts and the regulation would be 5 Volts for changes in current of 5 - 30 mA around the design voltage of 150 Volts..

This exhibit is a special quality valve.

The plain cathode cylinder.

The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 59 mm tall.

References: Data-sheet & 1040.

Pin Connections

B7G

1

2

3

4

5

6

7

a

k

ic

k

a

ic

k

Absolute Maximum Operating Conditions¶

Stabiliser

Va

mAa

150

30

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated May 18, 2020.

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Sensibly equivalent^¶ to:

References: Data-sheet & ¹⁰⁴⁰.

Absolute Maximum Operating Conditions^¶