Inventors:
Maghar S. Chana - Rochester NY
Eli Leonard Garelick - Henrietta NY
Assignee:
Rochester Instrument Systems, Inc. - Rochester NY
International Classification:
H02M 3335
Abstract:
A current-to-current isolator is utilized in a monitoring system between a signal transmitter and a control room instrument. The isolator has a master oscillator, including a first transformer, a slave oscillator, a current transformer and a rectifying circuit, so that the current signal at its input is closely reproduced at its output. The isolator is powered by the signal current from the transmitter and does not require an external power source.