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CV1041

Sensibly equivalent to:
220VS PM12M S215VM US2 VR41 VS24
See also:
The Philips-Mullard (PM) Series - 2 Volt Valves for Battery Receivers
    
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The valve is marked CV1041 and the paper label gives PM2M. The CV1041 commercial equivalent is the PM12M. The PM12M is a variable-mu amplifier pentode with a 2 Volt filament.
The filament is for accumulator use and the anode is designed for dry battery operation with a maximum anode voltage of 150 Volts.
The classic envelope is 42 mm in diameter and excluding the B4 base pins, is 106 mm tall.
References: Datasheet & 1040. Type CV1041 was first introduced in 1933.

 

Pin Connections
B4
1
2
3
4
tc
g2
g1
f
f
a

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
2.0
0.18
150
90
0
2.5
0.5
1.4
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated December19, 2013.
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