초록 ▼

AC-DC voltage regulation is achieved utilizing, among other components, a series pass control element which is serially connected to a detector and filter output stage and between circuit input terminals and an output load. A rectified input voltage is applied to the series pass control element whic

AC-DC voltage regulation is achieved utilizing, among other components, a series pass control element which is serially connected to a detector and filter output stage and between circuit input terminals and an output load. A rectified input voltage is applied to the series pass control element which controls the required amount of current flowing into a load every ½cycle of the input signal. This current is, in turn, detected and filtered to provide the regulated DC output voltage. A voltage sensor is connected to the output of the series pass control element and in parallel with the detector and filter stage; this sensor breaks down at a predetermined level of series pass voltage to, in turn, generate a feedback control voltage. This control voltage is fed back to a current controlled switch which is connected in shunt with the series pass control element. This current controlled switch responds to the feedback voltage to accordingly limit the current conduction in the series pass control element to precisely the amount required by a varying load connected to the circuit output terminal. Thus, voltage regulation is achieved with a maximum AC-DC conversion efficiency and a minimum power dissipation.

대표청구항 ▼

An efficient voltage regulation network for converting an unregulated AC input voltage into a regulated DC output voltage across a load, said network comprising: a. a series pass control element for conducting current a given portion of each cycle of AC input voltage coupled thereto, b. means connec

An efficient voltage regulation network for converting an unregulated AC input voltage into a regulated DC output voltage across a load, said network comprising: a. a series pass control element for conducting current a given portion of each cycle of AC input voltage coupled thereto, b. means connected to the output of said control element for detecting and filterIng the output voltage thereof and providing a DC ripple voltage, said detection means disconnecting said control element from said load once each cycle of AC input voltage applied to said control element and preventing said control element from turning on more than one each cycle of AC input voltage applied thereto, c. means connected to the output of said control element for sensing the changes in voltage thereat and for generating a control potential at a control node, and d. means coupled between said control node and the input of said series pass control element and responsive to the voltage generated at control node for controlling the time during each cycle of AC input voltage that said series pass control element is conducting current to an output load, whereby said control element provides the required amount of output current for a varying load on said regulator and the latter, in turn, determines the varying level of voltage at the output of said series pass control element.