The VPU1 is a variable μ RF pentode introduced in 1937.The VPU1 was used by Ekco in their 1937 AD38 radio. Other valves in the line-up were SP13C straight HF pentode, Pen36C audio output pentode and UR1C half wave rectifier. This was an AC/DC straight or TRF broadcast receiver. The AD37 receiver used a VP13C rather than the VPU1. The VP13C is an HF variable μ pentode.The classic envelope is 41 mm in diameter, and excluding the B7 base pins is 108 mm tall.References: 1043. Type VPU1 was first introduced in 1937. See also 1937 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | tc | a(d2) | m | a(d1) | h | h | k | a | g1 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm |
| 13 | 0.2 | 200 | 200 | -2 | 9.0 | 3.6 | - | 2.2 |
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Updated December14, 2012.
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