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30FL2

Sensibly equivalent to:
PCF812
    
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The 30FL2 is a television valve in a miniature envelope, the 6FL2 is identical except for the heater, which is 6.3 V at 0.5 A.
This exhibit is labeled 30FL2/1 and we can find no specific data for it.
The triode, low power beam tetrode was designed as line time base and sync separator. The 30FL2 was used in the time base circuitry of the once very common Thorn 1500 mono television chassis. Models using this chassis included sets sold under the names of Ferguson, Ultra, Radio Rentals et al. In the Thorn 1500 chassis the 30FL2 triode section was used in blocking oscillator configuration as the line oscillator and the beam tetrode as the sync pulse separator. It is believed that the 30FL2 is an enhanced version of the 30FL1. Thanks to Simon Pearson for additional data on the 30FL1 and 30FL2.
The beam tetrode with the two halves of the anode connected by a strap.
The BVA letters and Made in England. Below the lower mica is a continuation of the screen that separates the triode from the beam tetrode.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 48 mm tall.
References: Datasheet & private communication.

 

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

 

Absolute Maximum Operating Conditions
Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
10.4
0.3
170
170
-2.1
10
2.5
7.5

 

Absolute Maximum Operating Conditions
Triode
Va
Vg
mAa
ra
gm
200
-7.7
10
5300
3.4
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated November 11, 2018.
shape:thin.glass.tube construction:all.glass type:triode.beam.tetrode age:post 1975 base:b9a heater:300ma pins:9 pin:1.a pin:2.g1(t) pin:3.k(t) pin:4.h pin:5.h pin:6.a pin:7.g2 pin:8.g1 pin:9.k.bp.s
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