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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.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 | 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 |
| 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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