Power factor controller
A power factor controller or corrector is provided in a regulated power supply circuit, in which the load and line regulation circuitry is separate from one another and in which the line regulation is provided with a 1/x 2 modulator in which the switching frequency is inversely proportional to the square of the line voltage.
1. A power factor controller or corrector in a regulated power supply circuit, which comprises separating load and line regulations in the power supply circuit and providing a 1/x 2 modulator module for the line regulation in which switching frequency is inversely proportional to the square of the line voltage.
2. A power factor controller or corrector according to claim 1 , in which the load regulation is achieved by a 1/v pulsewidth generator which generates a pulse duration that is inversely proportional to the voltage from a differential gain circuitry that produces a control voltage which is proportional to the difference between a fraction of output voltage and a fixed reference voltage.
3. A power factor controller or corrector according to claim 2 , in which a loop delay is provided between the differential gain circuitry and the 1/v pulse generator.
4. A power factor controller or corrector according to claim 1 , combined with a hybrid power supply having a 1/x frequency modulating module, said combination comprising cascading the 1/x 2 module with the 1/x module.
5. A power factor controller or corrector according to claim 2 , combined with a hybrid power supply having a 1/x frequency modulating module, said combination comprising cascading the 1/x 2 module with the 1/x module.
6. A power factor controller or corrector according to claim 3 , combined with a hybrid power supply having a 1/x frequency modulating module, said combination comprising cascading the 1/x 2 module with the 1/x module.