Antique radios, Old Time Radios
7851
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| Tube type: |
Screen-grid Tetrode |
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| Identical to |
7851
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| Base |
Miniatur-7-Pin-Base B7G, USA 1940
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| Filament |
Vf 2.5 Volts / If 0.2 Ampere / Indirect |
| Description |
Electrometer tetrode intended as high-gain current amplifier for input currents in the order of nanoamperes. Typical operating conditions: 11.0V plate and G2, -2.2V G1, 16 microamps plate current, 40 micromhos transconductance.
Must be shielded from light and e.m. fields.
GE and Tung-Sol.
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| Information source |
Essential Characteristics, GE 1973
- - Manufacturers Literature
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7851: Bericht in Electronic World, 10/1963
Daniel Consales
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7851: Essential characteristics
Peter Hoddow
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Just Qvigstad
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7851: Bericht in Electronics World, 10/1963
Daniel Consales
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Collection of
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