Electronic valve (twin triode), Type 5751, manufactured by RCA in original packaging. Used as a spare part for the MUDPAC analogue computer. This valve was used in the first (input) stage of the operational amplifier modules. The 5751 was a special quality valve designed for critical applications such as this.

Physical Description

Tubular glass bulb with exhaust tip on top with standard nine pin miniature base. Cardboard box with red glossy background; black and white printed text.

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