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KT71Sensibly equivalent¶ to:
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The KT71 is an audio beam tetrode output valve that was designed for use in AC/DC equipment such as universal voltage radio receivers and television sets. It was issued in the early 1940's.In single ended use an output of 5 Watts was possible with an anode load of 2,400 Ohms. If used in push pull class AB1 a pair of KT71's would generate 11.5 Watts at 4.5% distortion.
The Osram brand label on the reverse. Our Marconi branded KT71 has the Type designation etched into the glass in the standard M-OV style, this exhibit features nothing other than a plain white printed identification. Not M-OV made?The classic envelope is 44 mm in diameter and, excluding the IO base pins, is 103 mm tall. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |  m | h | a | g2 | g1 | nc | h | k |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | gm | Pout | D |
| 48 | 0.16 | 175 | 175 | -9.8 | 70 | 12 | 10 | 5W | 9% |
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Updated January 06, 2022.
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