The TP23 is a battery triode pentode self oscillating frequency changer. The design use was for broadcast bands and low short waves up to 20 MHz.![](../pics/acn0003a.jpg)
The B7 base.Thanks to Mark Mallison for sending the images.The classic envelope is mm in diameter, and excluding the B7 base pins is mm tall.References: Data-sheet, 1040 & 1043. Type TP23 was first introduced in 1937. See also 1937 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | tc | ![](../static/key.gif) a(t) | g1(t),g3(p) | g2 | f | f | M | a(p) | g1(p) |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | ![](../static/pdflogo.gif)
| 2.0 | 0.25 | 150 | 150 | -1.5 | 1.0 | 0.5 | 1.6M | 1.2 |
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Updated October 12, 2019.
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