Sensibly equivalent¶ to:
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: Data-sheet & 1043. Type QP230 was first introduced in 1936.
Absolute Maximum Operating Conditions¶
Updated December13, 2012. shape:classic construction:pinch type:double.pentode age:1930.1940 base:b7 heater:2.0v pins:7 pin:1.g1 pin:2.g1 pin:3.a pin:4.f pin:5.f pin:6.g2 pin:7.a