▼ Menu

QP230

Sensibly equivalent to:
240QP
See also:
Quiescent Push-Pull
    
Extras ▼

 

The QP230 is a directly heated double pentode for audio output use. It was designed to operate from an accumulator filament supply and a 120 Volt HT battery. The two pentodes being designed to operate as a quiescent push pull output stage in class B.
The classic envelope is 38 mm in diameter and, excluding the B7 base pins, is 92 mm tall.
References: Datasheet & 1043. Type QP230 was first introduced in 1936.

 

Pin Connections
B7
1
2
3
4
5
6
7
g1(2)
g1(1)
a(1)
f
f
g2
a(2)

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
Pout
D
2.0
0.3
120
120
-9.6
2.3
0.6
17,000
0.85W
5%
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated December13, 2012.
Return to Main Index