发明名称 |
PULSED THYRISTOR TRIGGER CONTROL CIRCUIT |
摘要 |
A trigger control circuit is provided for producing firing pulses for the thyristor of thyristor control system such as a power factor controller. The control circuit overcomes thyristor triggering problems involved with the current lag associated with controlling inductive loads and utilizes a phase difference signal, already present in the power factor controller, in deriving a signal for inhibiting generation of a firing pulse until no load current is flowing from the preceding half cycle and thereby ensuring that the thyristor is triggered on during each half cycle. |
申请公布号 |
HK97186(A) |
申请公布日期 |
1986.12.19 |
申请号 |
HK19860000971 |
申请日期 |
1986.12.11 |
申请人 |
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
发明人 |
NOLA, FRANK JOSEPH |
分类号 |
H02M1/08;G05F1/455;H02J3/18;H02P23/00;H02P25/04;H02P27/02 |
主分类号 |
H02M1/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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