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US 4,047,054 AGranted
Thyristor switching circuit
AssigneeRCA Corporation
InventorAdel Abdel Aziz Ahmed
Life of this patent
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Abstract
A signal to be switched is applied across the conduction path of a thyristor and a trigger signal is applied to the thyristor gate electrode. False triggering, due to transients in either signal, is prevented by a current amplifier connected at the output thereof to the gate electrode and at the input thereof, via separate alternating current conductive paths, to the gate electrode and to one end of the thyristor conduction path.
Claims2
A switching circuit comprising, in combination:
- first and second terminals for receiving a signal thereacross to be switched and a third terminal for receiving a trigger signal;
- a thyristor having a main conduction path coupled between said first and second terminals and having also a gate electrode;
- means coupling said gate electrode to said third terminal;
- a node;
- current amplifier means having an input electrode coupled to said node and an output electrode coupled to said third terminal;
- a first capacitor coupled between said node and said first terminal;
- and
- a second capacitor coupled between said node and said third terminal.
5 more elements
Dependencies are inferred from the claim text.