G - Physics
01
R
328/166, 346/53,
G01R 19/00 (2006.01) B61L 1/20 (2006.01) G01R 19/155 (2006.01)
Patent
CA 2006802
ABSTRACT A circuit arrangement for detecting an input voltage comprises an oscillator responsive to the voltage, the oscillator including a pair of transistors (8, 9) connected as an astable multivibrator, each of the transistors having a load which comprises a primary winding (16 or 17) of a current transformer (T) and a low resistance proof resistor (12 or 13). A current flows through a secondary winding (18) of the transformer the amplitude of which current is proportional to the input voltage.
Riches Mckenzie & Herbert Llp
Westinghouse Brake And Signal Holdings Limited
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