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PL82Sensibly equivalent¶ to:See also:
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This exhibit is a PL82 that clearly demonstrates what happens to a valve in a domestic television receiver. It has been partly cleaned but still some of the grime remains. The large amount of heat generated caused a considerable convection current through the set and the high EHT voltage encouraged dirt and grease to settle. It was much worse in a house where tobacco smoke or open fires were common.Although the PL82 would normally be found in frame output stage of a television receiver, a pair used as an audio amplifier in push pull class AB1 would deliver 9 Watts at 4 % distortion.The peak to peak grid signal voltage would be 26 Volts and the shared anode load would be 4,000 Ohms.![](../pics/aaq0275a.jpg)
The closed anode and grid cooling fins above the top mica.The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 71 mm tall.References: Data-sheet & 1040. Type PL82 was first introduced in 1951. See also 1951 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ![](../static/key.gif) nc | g1 | k,g3 | h | h | ic | a | ic | g2 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | Pout | D | ![](../static/pdflogo.gif)
| 16.5 | 0.3 | 170 | 170 | -10.4 | 53 | 10 | 20,000 | 9.0 | 4W | 10% |
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Updated January 03, 2022.
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