Over-current sensing circuit for switching-type power supply

Details Over-current sensing circuit for switching-type power supply Over-current sensing circuit for switching-type power supply

1985-05-28

1986-10-07

Wong, Peter S.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

323285, 323276, 323909, 361 18, 361 79, H02H 710, G05F 146

Patent

active

046163026

ABSTRACT:
An over-current sensing circuit for use with a switching-type power supply for achieving fold-back, which senses not only the load current drawn from the power supply, but also the voltage at the load and the voltage across the power supply potentiometer which is used to set the output voltage. The sensing circuit thereby serves to maintain the current limit point at which fold-back occurs virtually constant in the presence of adjustments of the output voltage of the power supply and regardless of the resistance of the bus which connects the power supply to the load.

REFERENCES:
patent: 3532936 (1970-10-01), Kuster
patent: 3801894 (1974-04-01), Spiegel
patent: 4309653 (1982-01-01), Stack et al.
patent: 4346342 (1982-08-01), Carollo
patent: 4485342 (1984-11-01), Hill et al.

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