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Mullard

PCL86


The Hampshire Collection
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Sensibly equivalent to:- 14GW8 - 8HG8
 
See also:
Valves and their Habits
 
This exhibit was last updated on 28 January 2013
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This PCL86 was made in the UK by Mullard and was designed for the audio stage of a television receiver and offered a quality output.
In 1961 Mullard developed a combination of an ECC83 triode and an EL84 output pentode in a single envelope and this was the ECL86. The PCL86 was the series heater chain version of that work.
The separate triode section would provide the first audio amplification, and the output pentode would drive the loudspeaker.
The PCL86 as a single ended audio amplifier would have a cathode resistor of 125 Ohms and an anode load of 5,100 Ohms and under these conditions would produce an output power of 4.1 Watts at a distortion of 10%.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 70 mm tall.
References: Datasheet & 1040. Type PCL86 was first introduced in 1961.
 
Pin Connections
B9A
1
2
3
4
5
6
7
8
9
g1(t)
k(t)
g2
h
h
a
k,s,g3
g1
a(t)
 
Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
13.3
0.3
230
230
-5.7
41.0
10.5
16,000
7.5
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
13.3
0.3
230
-1.7
1.2
62,000
1.6

Thanks to Frank Philipse for supplying the above PDF datasheet
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