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OPTOELECTRONIC_BRIDGE_ELEMENT

2016-05-14 22:56  
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OPTOELECTRONIC_BRIDGE_ELEMENT
Lamp With rheostat varies resistance of photocell over range of 10,000 ohms to give stable nonreactive resistance element for r-f bridge. –R.H. Wagner, Variable R-F Resistor Attained With Photocell, Electronics, 37:26, p 67.