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i was wondering how companies who build Energy meters manage to make AC current measurements using shunt resistors and AC voltage measurements using voltage divider circuits safe to use in-spite of the circuit being exposed to direct AC line suuply without any form of isolation.. or do they use...
I need to provide a voltage surge protection for a relay input which has a maximum voltage rating of 250VAC. The relay im using is: Songle SDR-05VDC-SL-C
datasheet: **broken link removed**
i have gone through some documentation of MOVs and i have narrowed down my options and have decided to...
but how would i obtain the voltage wave without the use of a transformer? is there any other component i could use? additionally... is there any other IC in the same form factor as ACS712 which is used to measure 1 or 2 amps and lower? i have searched online, but couldnt find a similar chip.
ive been doing a project to figure out the power factor of a load by comparing the zero crossings of the voltage and current signals (of a AC signal) and hence finding the phase difference using an arduino UNO.
the application is confidential but i can say that im using a load which can...
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