发明名称 |
Power control circuit arrangements |
摘要 |
A power control circuit in which a direct current voltage (Vp) proportional to the a.c. power applied to a load (L) is derived from voltages (Vc and Vv) proportional to the a.c. current flowing in the load (L) and the a.c. voltage across the load, respectively, and compared with a voltage (Vnp) representing nominal power to the load to provide a d.c. signal (Vd) the amplitude of which is utilized in conjunction with a staircase or ramp generator (SG) to add or deduct cycles of the a.c. power to or from the load circuit according to a predetermined load power rating and in dependence upon variations in the a.c. supply voltage to the load and changes in resistance of the load.
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申请公布号 |
US4596947(A) |
申请公布日期 |
1986.06.24 |
申请号 |
US19830533599 |
申请日期 |
1983.09.19 |
申请人 |
PLESSEY OVERSEAS LTD. |
发明人 |
ALDER, JOHN M.;IRELAND, ROBERT S. |
分类号 |
G05F1/66;(IPC1-7):G05F1/455 |
主分类号 |
G05F1/66 |
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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