公开(公告)号：US4323959A

公开(公告)日：1982-04-06

申请号：US183532

申请日：1980-09-02

Applicant: Kenneth A. Check

Inventor： Kenneth A. Check

IPC: H02M1/44 ,  H02M3/315

CPC classification number: H02M1/44 ,  H02M3/3155

Abstract: A power supply includes an inverter circuit comprising silicon controlled rectifiers which are driven by a variable frequency control signal. The frequency of the control signal is determined by monitoring the power output requirements of the power supply. Because of the continuous sinusoidal operation of the inverter, the supply generates a very low level of radio frequency interference (rfi).

Abstract translation: 电源包括由可变频率控制信号驱动的可控硅整流器的逆变器电路。 通过监视电源的功率输出要求来确定控制信号的频率。 由于逆变器连续正弦运算，电源产生非常低的射频干扰（rfi）。

公开(公告)号：US06519127B1

公开(公告)日：2003-02-11

申请号：US09679324

申请日：2000-10-03

Applicant: Kenneth A. Check

Inventor： Kenneth A. Check

IPC: H02H300

CPC classification number: H03K17/6871 ,  H03K17/6874

Abstract: A solid state safety relay comprises: a first driver circuit; a second driver circuit; a charge disconnect transistor coupled to the first driver circuit and configured to control the flow of current along a current path; a first discharge disconnect transistor coupled to the first driver circuit and configured to control the flow of current along the current path; and a second discharge disconnect transistor coupled to the second driver circuit and configured to control the flow of current along the current path. A method of isolating an energy source from a circuit current path, comprises: turning off a first discharge disconnect transistor coupled to the circuit current path; and turning off a second discharge disconnect transistor coupled to the circuit current path to permit isolation of the energy source from the circuit current path if either one of the first discharge disconnect transistor or the second discharge disconnect transistor fails.

Abstract translation: 固态安全继电器包括：第一驱动电路; 第二个驱动电路; 电荷断开晶体管，其耦合到所述第一驱动器电路并且被配置为控制沿着电流路径的电流流动; 耦合到所述第一驱动器电路并被配置为控制沿着所述电流路径的电流的第一放电断开晶体管; 以及耦合到所述第二驱动器电路并且被配置为控制沿着所述电流路径的电流的第二放电断开晶体管。 一种从电路电流路径分离能量源的方法，包括：关闭耦合到电路电流路径的第一放电截止晶体管; 以及如果所述第一放电断开晶体管或所述第二放电断开晶体管中的任一个发生故障，则关闭耦合到所述电路电流路径的第二放电断开晶体管以允许所述能量源与所述电路电流路径的隔离。

公开(公告)号：USD340907S

公开(公告)日：1993-11-02

申请号：US716379

申请日：1991-06-14

Applicant: David A. Smith ,  Neal G. Stewart ,  Kenneth A. Check

Designer： David A. Smith ,  Neal G. Stewart ,  Kenneth A. Check