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PCL88

Sensibly equivalent to:
30PL14 LN329
    
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The PCL88 is the Mullard implementation of the 30PL14 frame output valve. The design was as a high power output valve for driving monochrome CRT's with 110 or 114 degree deflection.
The triode is shielded from the power section, seen here on the left. The control grid supports have heat radiating flanges.
The screen and triode section. The grid is wound on copper supports.
With the BVA ensuring that a valve design was available from multiple suppliers the box carries both the original Type designation and the Mullard code for the design.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 68 mm tall.
References: Datasheet & 1040. Type PCL88 was first introduced in 1960.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
g1(t)
kp,g3,s
g1
h
h
a
g2
k(t)
a

 

Absolute Maximum Operating Conditions
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
16.0
0.3
170
170
-15
50
3.0
7.6

 

Absolute Maximum Operating Conditions
Triode
Va
Vg
mAa
ra
gm
200
-7.7
10.0
5,300
3.4
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated June 24, 2013.
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