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PCF80Sensibly equivalent¶ to:See also:
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This exhibit is a Mullard PCF80 with white lettering and the older style logo. The PCF80 is from the era of VHF Band III television. Band III television in the UK began in 1955, up to that date the only program was the one BBC channel. The Band III service was the start of commercial television.The valve is a triode pentode, with separate cathodes, designed to function as a mixer and oscillator in the tuner.The article referenced above gives details of the faults and performance of the PCF80. Mullard also advertise the PCF80 as a video amplifier and cathode follower in a single envelope.See also PCC84 for the corresponding pre-amplifier valve for Band III television tuners from the mid 1950s.The face of the triode anode. The filament is coiled before being insulated.The Control grid of the triode is set at right angles to the grid axis of the pentode.The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 48 mm tall.References: Data-sheet & 1040. Type PCF80 was first introduced in 1953. See also 1953 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a(t) | g1 | g2 | h | h | a | k,s,g3 | k(t) | g1(t) |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm |
| 9 | 0.3 | 170 | 170 | -5.5 | 5.2 | 1.5 | 0.87M | 2.1 |
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Absolute Maximum Operating Conditions¶
| Va | Vg | mAa |
| 100 | -2 | 14 |
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Updated January 28, 2019.
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