The 16A8 is an equivalent of the PCL82 triode pentode and is typical of the later valve television receivers audio output stages.

The double valve enabled the demodulated audio signal to be amplified and applied to the speaker by using the minimum number of components and printed circuit board space.

The chassis would have been a vertical printed circuit board with the gun of the picture tube passing through it. Each of the tall valves would have been retained in their holders by a spring clip.

For such receivers the valve technology had developed to the point that the valves would normally last the life of the set without needing to be replaced. Today we take for granted that the picture tube will last eight to ten years of daily use.

The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins it is 71 mm tall.

 
Pin Connections

B9A	1	2	3	4	5	6	7	8	9
	gt	kp,g3,s	g1	h	h	ap	g2	kt	at

 
Absolute Maximum Operating Conditions

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm	Pout	D
	16	0.3	170	170	-11.5	41	7.5	16k	7.5	3.3	10%

This exhibit was last updated on 04 August 2006