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公开(公告)号：US4728817A
公开(公告)日：1988-03-01
申请号：US12774
申请日：1987-02-09
Applicant: Ralph D. Jessee , Joseph M. Urish
Inventor： Ralph D. Jessee , Joseph M. Urish
IPC: H02M7/537 , H03K17/0412 , H03K17/60 , H03K17/615 , H03K17/66 , G05F1/56 , H03K3/33
CPC classification number: H03K17/04126 , H03K17/601 , H03K17/615 , H03K17/666
Abstract: A transistor drive circuit includes a driver transistor and a power switching transistor connected in a Darlington configuration which receives turn-on and turn-off signals from a drive transformer. A capacitor is provided for connection between the driver transistor base and the switching transistor emitter during a turn-off period such that the voltage on the capacitor hastens turn-off of the driver transistor and the switching transistor. A diode connected between the emitter and the base of the driver transistor provides for continuing current flow from the capacitor following turn-off of the driver transistor but prior to turn-off of the switching transistor. After the switching transistor has turned off, the capacitor is recharged prior to the presence of a turn-on signal from the drive transformer.
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公开(公告)号：US4434358A
公开(公告)日：1984-02-28
申请号：US376072
申请日：1982-05-07
Applicant: Otto L. Apfelbeck , Joseph M. Urish
Inventor： Otto L. Apfelbeck , Joseph M. Urish
CPC classification number: H05B3/84 , H05B1/0236 , H05B2203/035
Abstract: An electrical resistance heater controller is provided with a plurality of circuit branches connected in parallel with each other and in series with a heating element and an external AC power source. Each circuit branch includes the series connection of a capacitor and a solid state switch. The switches are controlled by a gating device to switch during the zero crossing of the AC source voltage waveform. Power delivered to the heating element is controlled by varying the amount of series capacitance in the circuit.
Abstract translation: 电阻加热器控制器具有彼此并联连接并与加热元件和外部AC电源串联的多个电路支路。 每个电路分支包括电容器和固态开关的串联连接。 在交流电源电压波形过零期间，开关由门控器件控制，以切换。 通过改变电路中的串联电容的量来控制传递到加热元件的功率。
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公开(公告)号：US4357524A
公开(公告)日：1982-11-02
申请号：US116515
申请日：1980-01-29
Applicant: Otto L. Apfelbeck , Joseph M. Urish
Inventor： Otto L. Apfelbeck , Joseph M. Urish
CPC classification number: H05B3/84 , G05D23/1913 , G05D23/24 , H05B1/0236 , H05B2203/035
Abstract: A controller system using high frequency switching by providing a bilateral switch gated on and off at a frequency about ten times the source frequency and the duty cycle determined by pulse width modulation of the high frequency waveform in accordance with window heater temperature.
Abstract translation: 通过提供高频切换的控制器系统，其以大约是源频率的十倍的频率和根据窗口加热器温度的高频波形的脉冲宽度调制确定的占空比进行门控和开关门控。
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公开(公告)号：US4342076A
公开(公告)日：1982-07-27
申请号：US233722
申请日：1981-02-12
Applicant: Mark A. Rosswurm , Joseph M. Urish
Inventor： Mark A. Rosswurm , Joseph M. Urish
CPC classification number: H02M7/53803
Abstract: A transistor current sensing circuit is provided for a power output transistor whose drive circuit includes a current controlled feedback transformer that has a current limited direct current source connected to the secondary winding of the transformer wherein the change in voltage level of the secondary winding upon the completion of turn-off of the output transistor is used as a signal to initiate turn-on of another associated transistor.
Abstract translation: 为功率输出晶体管提供晶体管电流感测电路，其驱动电路包括电流控制反馈变压器，该电流控制反馈变压器具有连接到变压器的次级绕组的电流限制直流电源，其中次级绕组在完成时的电压电平的变化 使用输出晶体管的截止信号作为信号来引起另一相关晶体管的导通。
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