▼ Menu

KLL32

 
    
Extras ▼

 

The KLL32 from Mullard is a battery double pentode with a common screen grid.
The input drive needs to be 12.0 Volts peak to peak. The to anode anode load is given as 16,000 Ohms. The output is 1.2 Watts with 2.8% distortion. The valves are designed to be biased to operate in class AB1. This gives better quality than the QP22 used is Class B but draws greater standing current from the HT battery.
The side view shows the pair of anodes.
Seen from the side and top the pair of inverted V oxide coated filaments can be seen along with the wire grids.
From this angle the filament support springs can be seen above the top mica. Like the KL35 the filament bends over the mica and does not hang directly down from the springs.
The classic envelope is 40 mm in diameter, and excluding the IO base pins is 88 mm tall.
References: Datasheet & 4065. Type KLL32 was first introduced in 1946.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
-
f+
a(1)
g1(1)
g1(2)
a(2)
f-,g3
g2

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
2.0
0.3
135
135
-11.3
16.9
5.7
PDF scanned from an original document held by the museum
Updated April 14, 2013.
Return to Main Index