RFI suppression technique for switching circuits

Details RFI suppression technique for switching circuits RFI suppression technique for switching circuits

1985-10-21

1986-11-25

Wong, Peter S.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 20, 455 63, H02J 102

Patent

active

046252703

ABSTRACT:
A switching type power supply includes neutralizing circuitry to counteract current flow to equipment ground due to generated RF currents. This neutralizing circuitry includes an added transformer winding and a neutralizing capacitor to counteract and cancel specified leakage currents. This arrangement permits use of smaller filter capacitors and hence reduces the line frequency leakage current flow to equipment ground.

REFERENCES:
patent: Re31638 (1984-07-01), Lam
patent: 3339082 (1967-08-01), Rhyne
patent: 4030024 (1977-06-01), Chambers et al.
patent: 4212053 (1980-07-01), Sichenzia
patent: 4335423 (1982-06-01), Koizumi et al.
patent: 4377842 (1983-03-01), Cambier
patent: 4439741 (1984-03-01), Turner, Jr.

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