H - Electricity – 02 – M
Patent
H - Electricity
02
M
323/10, 321/93,
H02M 7/155 (2006.01) H02M 1/092 (2006.01) H03K 17/78 (2006.01) H03K 17/79 (2006.01)
Patent
CA 1187550
- 25 - Abstract of the Disclosure An optical gate signal generating apparatus for firing a plurality of thyristors in a thyristor converter apparatus, including a circuit for generating an electrical gate signal, a plurality of first light emitting elements, each being connected to receive the electrical gate signal for generating a first optical signal. The apparatus also includes a plurality of auxiliary circuit, each including a series connection of a second light emitting element and a nonlinear element and being connected to receive the electrical gate signal for generating a second optical signal, each of the auxiliary circuits being connected in parallel with each of the first light emitting elements, and a plurality of light guides, each having a first, a second and a third branches, each of the light guides being connected to receive the first and second optical signals at ends of the first and second branches, respectively and for guiding the first and second optical signals to an end of the third branch to produce the optical gate signal. The thyristor converter apparatus including the optical gate signal generating apparatus is also disclosed.
422940
Hatano Yukihiko
Takahashi Tadashi
Ridout & Maybee Llp
Tokyo Shibaura Denki Kabushiki Kaisha
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