Electrical testing apparatus

Details Electrical testing apparatus Electrical testing apparatus

G - Physics

01

R

G01R 31/02 (2006.01)

Patent

CA 2055641

ABSTRACT OF THE DISCLOSURE ELECTRICAL TESTING APPARATUS The present invention provides an apparatus (1) for testing an electrical circuit for leakage and continuity losses. It comprises a voltage supply (VHT), a monitor circuit, having a first and second half, a current supply means (2) for supplying an input current (IS, IO) of equal magnitude to each half of the monitor circuit, connection means for connecting a circuit to be tested (3) to the first half of the monitor circuit and current varying means (2). The current varying means (2) is operable to vary the input currents (IS, IO) so as to maintain an output current (IR) from the circuit to be tested constant irrespective of any leakage losses (IL) in the circuit to be tested and to increase the current (IO) in the second half in proportion to the magnitude of the leakage loss ((IL). First connection means are provided for connecting a first voltage measuring means across the two halves thereby to determine the magnitude of the leakage loss (IL).

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