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GRID LEAK CAPACITOR/RESISTORS & LISSEN CHOKE, 1930's

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GRID LEAK CAPACITOR/RESISTORS & LISSEN CHOKE, 1930's

A Grid Leak resistor is normally used between the grid of a thermionic valve and ground, in order for the valve to function correctly, if the grid was connected to a low impedance source such as a tuning or coupling coil then a capacitor is added across this resistor to provide a low impedance path. Far Left. Lisson HF Choke 76mH not marked. Middle back. Lisson 0.0002uF Mica Condenser with resistor clips and box. Middle Front. Lisson dual holder with two resistors, the terminals are marked LT & G (grid) on one side and P (plate) & HT on the other. Right back. Dubilier Mica Condenser Type 620 0.0003uF and resistor on clips. Front right. Telsen Grid Leak resistor holder and box.
Bruce Hammond Collection

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A1493



2007 The Museum of Technology, The Great War and WWII
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