Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1988-10-25
1990-03-06
James, Andrew J.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307571, 307311, 307253, 307639, H03K 1760, H03K 342
Patent
active
049068768
ABSTRACT:
The base drive circuit is used to drive a bipolar power switching device of the type which includes a collector, a base and an emitter (or equivalents thereto). The drive circuit includes first and second electronic switches. The first electronic switch is coupled between the collector and the base of the power switching device. The second electronic switch is coupled between the base of the power switching device and a negative voltage source which is negative with reference to the emitter voltage. The first electronic switch has a gate and the second electronic switch has a gate and both gates are connected together. A resistor is coupled between the gates of the first and second switches and a positive voltage source. A control electronic switch is connected between the gates and the negative voltage source, the electronic control switch being responsive to a control input signal. A reference voltage bus is connected between a voltage potential intermediate said positive and negative voltages and the emitter of the power switching device. The first switch is conductive and fully enhanced when a positive voltage is applied to the gate thereof and the second switch is conductive and fully enhanced when a negative voltage is applied to the gate thereof.
REFERENCES:
patent: 4037117 (1977-07-01), Carbrey
patent: 4710645 (1987-12-01), Doittau et al.
James Andrew J.
MSI Corporation
Vigil Thomas R.
Wambach Margaret Rose
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