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ARP37

Sensibly equivalent to:
CV1342 QP25
See also:
Quiescent Push-Pull
    
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The ARP37 is a quiescent push-pull double pentode for battery operation. The designation is as a UK army receiver pentode with an original stores code of ZA2938. The CV data-sheet shows that the CV1342 is the ARP37 renamed and that the specification was based on the Mazda QP25.
QPP valves operated in class B and for a 19 Volt peak to peak input signal the ARP37 would deliver 1.1 Watt output at 5% distortion. See also QP230.
One of the anodes seen full face. The envelope contains two identical pentode sections.
The classic envelope is 30 mm in diameter, and excluding the MO base pins, is 70 mm tall.
References: Datasheet, 1040 & 1043. Type ARP37 was first introduced in 1939.

 

Pin Connections
MO
1
2
3
4
5
6
7
8
f-
-
a(2)
g2
g1(2)
g1(1)
a(1)
f+

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
Pout
2.0
0.2
120
120
-9.75
2.3
0.43
1.2W
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated November 06, 2013.
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