Zero crossing circuit

Details Zero crossing circuit Zero crossing circuit

H - Electricity

03

K

H03K 5/1536 (2006.01)

Patent

CA 2623061

An improved zero crossing circuit includes a signal output circuit element for registering a sharply defined signal, and in one embodiment an isolation circuit element cooperating with the signal output element, and a delay-inducing circuit element cooperating with the signal output element for applying a substantially constant time delay to the signal. In particular, the delay-inducing element includes a switch circuit and a delay circuit. The switch circuit commences the time delay by the delay circuit upon a triggering voltage being reached. The time delay circuit is adapted so that the time delay equates to a time period required for the triggering voltage to change to zero so as to cross zero voltage substantially as the time delay expires.

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