发明名称 |
Power measuring apparatus |
摘要 |
Apparatus for measuring power consumed by a load connected via mains to a source of alternating current having a given fundamental frequency includes means for generating a first signal proportional to the instantaneous voltage across the load and a transformer secondary toroidally wrapped around one of the mains for generating a second signal proportional to the instantaneous voltage through the load. Tuned amplifiers of narrow band pass amplify the signals before they are fed to a square law multiplier means including photooptical devices.
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申请公布号 |
US4236112(A) |
申请公布日期 |
1980.11.25 |
申请号 |
US19780925105 |
申请日期 |
1978.07.17 |
申请人 |
CONVERSATIONAL SYSTEMS INC |
发明人 |
BOLDRIDGE, AUSTIN G JR |
分类号 |
G01R1/20;G01R21/00;G01R21/10;(IPC1-7):G01R21/06;G01R29/00 |
主分类号 |
G01R1/20 |
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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