| 摘要 |
PCT No. PCT/GB96/00541 Sec. 371 Date Sep. 16, 1997 Sec. 102(e) Date Sep. 16, 1997 PCT Filed Mar. 8, 1996 PCT Pub. No. WO96/28740 PCT Pub. Date Sep. 19, 1996An electricity meter including a circuit which receives a first A.C. signal having a magnitude dependent on power passing through a conductor, and a mains A.C. signal. While the mains signal is positive, first pulses are generated at a rate dependent on the first A.C. signal. While the mains signal is negative, second pulses are generated at a rate dependent on the first A.C. signal. Pulses are counted over time, the sum of pulse counts being a measure of energy used. |
