Noise reduction technique for PWM controllers

Details Noise reduction technique for PWM controllers Noise reduction technique for PWM controllers

1989-09-13

1990-10-16

Wong, Peter S.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 41, H02M 3335

Patent

active

049640267

ABSTRACT:
The present invention is for an architecture for an input circuit to a linear circuit having a circuit ground from a linear system having a system ground. The architecture has a linear input signal which is coupled into a current limiting input impedance. The current limiting input impedance is not connected to the system ground. A linear input circuit is coupled to receive the reduced input signal and is coupled to the circuit ground. Accordingly, the analog input to the linear input circuit is a current signal rather than a voltage signal.

REFERENCES:
patent: 4672300 (1987-06-01), Harper
patent: 4737853 (1988-04-01), Graves et al.
patent: 4755922 (1988-07-01), Puvogel
patent: 4791546 (1988-12-01), Carroll
patent: 4794508 (1988-12-01), Carroll

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