Crowbar protection circuit with discharge rate control
A crowbar circuit includes a first inductor coupled to a positive terminal of a power supply at a first terminal of the first inductor and coupled, at a second terminal of the first inductor, in series with a main thyristor having a main gate drive for limiting a discharge current through main thyri...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A crowbar circuit includes a first inductor coupled to a positive terminal of a power supply at a first terminal of the first inductor and coupled, at a second terminal of the first inductor, in series with a main thyristor having a main gate drive for limiting a discharge current through main thyristor; a resistor coupled to the main thyristor at a first terminal of the resistor and to a negative terminal of the power supply at a second terminal of the resistor; an auxiliary thyristor, having an auxiliary gate drive, coupled in series with a first capacitor at a first terminal of the thyristor and an auxiliary inductor at a second terminal of the thyristor, the auxiliary inductor coupled between the first terminal of the resistor and the first capacitor; a first diode coupled between the first terminal of the resistor and the first terminal of the auxiliary thyristor; and a second diode coupled between the positive terminal of the power supply and the negative terminal of the power supply. |
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