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210VPASensibly equivalent¶ to:CV2574 W21
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The 210VPA is a variable-mu amplifier HF pentode dating from the late 1930s. The design use is as an HF or IF voltage amplifier in AGC controlled battery superhet radio receivers.![](../pics/acn0089a.jpg)
The B7 base cap and pins.Thanks to Mark Mallison for sending the images.The balloon envelope is mm in diameter, and excluding the B7 base pins is mm tall.References: Data, 1040 & 1043. Type 210VPA was first introduced in 1938. See also 1938 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | tc | ![](../static/key.gif) m | g1 | g3 | f | f | nc | g2 | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | ![](../static/key.gif)
| 2.0 | 0.1 | 120 | 70 | -1.5-17 | 2.0 | 0.7 | 1.5M | 0.88 |
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Updated October 29, 2022.
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