H - Electricity – 02 – M
Patent
H - Electricity
02
M
323/10
H02M 5/257 (2006.01) G05F 1/445 (2006.01) H02M 1/088 (2006.01) H02M 1/092 (2006.01) H03K 17/723 (2006.01)
Patent
CA 1038929
ABSTRACT OF THE DISCLOSURE An alternating current static switch comprising two branch circuits connected in inverse parallel circuit relation and having at least three semiconductor devices in series in ? each branch circuit has anode-to-cathode cross connections between oppositely poled devices at each voltage level. A single gate pulse transformer having secondary windings equal in number to the number of cross connections supplies positive gate current pulses to all semiconductor devices in both branch circuits once each half cycle of impressed circuit voltage. Each secondary winding has its negative terminal connected to one cross connection and its positive terminal connected to the gates of all devices having cathodes connected to the same cross connection.
226179
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