The 30FL2 is a television valve in a miniature envelope.

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 thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 47 mm tall.

 
Pin Connections

B9A	1	2	3	4	5	6	7	8	9
	a	gt	kt	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

Triode	Va	Vg	mAa	ra	gm
	200	-7.7	10	5300	3.4

This exhibit was last updated on 30 August 2005