公开(公告)号：US3737761A

公开(公告)日：1973-06-05

申请号：US3737761D

申请日：1972-04-19

Applicant: INT STANDARD ELECTRIC CORP

Inventor： WALTHER D

IPC: G05F1/445 ,  H02J3/04 ,  G05F5/00

CPC classification number: G05F1/445 ,  Y10T307/675 ,  Y10T307/858

Abstract: An electrical circuit for automatically adapting an inductive load to that of one of two possible A.C. supply voltages applied across the circuit. The circuit comprises a capacitor connected in series with the load. The capacitor value is such that a series resonant circuit is formed with the load at a frequency of operation. A controlled semiconductor device having a pair of terminals and a gate terminal is connected with the pair of terminals in parallel across the capacitor. The gate terminal is connected through a non-linear current-voltage characteristic electrical component to one of the terminals of the A.C. supply voltage. For the lower A.C. supply voltage, the capacitor and inductor form a series resonant circuit and at the higher A.C. supply voltage, the controlled semiconductor device short circuits the capacitor.

Abstract translation: 一种电路，用于将电感负载自动适应于跨过电路施加的两个可能的交流电源电压之一。 电路包括与负载串联连接的电容器。 电容器值使得以工作频率的负载形成串联谐振电路。 具有一对端子和栅极端子的受控半导体器件与该对端子并联连接在电容器上。 栅极端子通过非线性电流 - 电压特性电气元件连接到交流电源电压的端子之一。 对于较低的交流电源电压，电容器和电感器形成串联谐振电路，并且在较高的交流电源电压下，受控半导体器件使电容器短路。