Testing circuit for electric component insulation strength - applies AC voltage and possible breakdown current is rectified and displayed

摘要

The testing circuit for electrical devices and components is connected for application of an ac test voltage, and a device detecting a voltage breakdown in the specimen. A current to voltage converter is connected in series with the specimen for conversion of a current flowing in the circuit in case of a breakdown into a rectified voltage. This voltage is applied to an integrator followed by a threshold switch for operation of an indicator. The current to voltage converter can be formed from a resistor placed in series with the specimen, a dual path rectifier bridge being connected in parallel with the resistor. The rectified voltage is taken from the bridge output.