Peak signal detecting device

Details Peak signal detecting device Peak signal detecting device

1992-08-24

1994-04-05

Kwon, John T.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307354, 307358, H03K 5153

Patent

active

053008251

ABSTRACT:
This invention provides a peak signal detecting device by which a peak of an input signal can be accurately detected even if a noise is caused. A level slice circuit (3) outputs a level slice signal S3 which turns to High/Low depending upon whether an absolute value of a reading signal S0 is more/less than a threshold value VT1. A level slice circuit (5) outputs a level slice signal S5 which turns to High/Low depending upon whether an absolute value of a differentiated signal S1 is more/less than a threshold value VT2. A delay circuit (6) delays a leading edge of the level slice signal S5 for a period T1 and its trailing edge for a period T2 to produce a delay signal S6. At this time, this process is cancelled when the High level of the level slice signal S5 is less than T1. A gate circuit (4) outputs a conjunction of a zero cross signal S2, level slice signal S3 and delay signal S6 as a gate signal S4' (peak detecting signal).

REFERENCES:
patent: 3760282 (1973-09-01), Arnold et al.
patent: 3767938 (1973-10-01), Kueper
patent: 4122397 (1978-10-01), Thomas
patent: 4780623 (1988-10-01), Yagi
patent: 5118967 (1992-06-01), Muth
patent: 5159340 (1992-10-01), Smith

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