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B729Sensibly equivalent¶ to:See also:
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The B729 is a pair of separate amplifier triodes within the same envelope. The two sections are separated by a metal screen.The B729 was developed for domestic television receivers and the heater has controlled conditions such that it can be used for parallel operation on a constant 6.3 Volt supply or within a 300 mA series heater chain.The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 47 mm tall.References: Data-sheet, Data & 1040. Type B729 was first introduced in 1958. See also 1958 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a(2) | g1(2) | k(2) | h | h | a(1) | g1(1) | k(1) | s |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vg | mAa | ra | gm |
| 6.3 | 0.3 | 200 | -7.9 | 10.0 | 5.3k | 3.4 |
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Updated January 19, 2023.
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