YHDC current sensor - the theory please

[richard]

sample data

ADC:1632,peak:608ADC:2447,peak:608
ADC:3224,peak:608
ADC:3704,peak:608
ADC:3722,peak:608
ADC:3312,peak:3722
ADC:2528,peak:3722
ADC:1632,peak:3722
ADC:880,peak:3722
ADC:576,peak:3722
ADC:704,peak:576
ADC:1248,peak:576
ADC:2032,peak:576
ADC:2880,peak:576
ADC:3520,peak:576
ADC:3776,peak:576
ADC:3568,peak:3776
ADC:2928,peak:3776
ADC:2032,peak:3776
ADC:1180,peak:3776
ADC:644,peak:3776
ADC:608,peak:3776
ADC:992,peak:608
ADC:1656,peak:608
ADC:2528,peak:608
ADC:3296,peak:608
ADC:3714,peak:608
ADC:3718,peak:608
ADC:3296,peak:3718
ADC:2451,peak:3718
ADC:1551,peak:3718
ADC:864,peak:3718
ADC:576,peak:3718
ADC:736,peak:576
ADC:1272,peak:576
ADC:2079,peak:576
ADC:2928,peak:576
ADC:3568,peak:576
ADC:3776,peak:576
ADC:3552,peak:3776
ADC:2880,peak:3776
ADC:1984,peak:3776
ADC:1138,peak:3776
ADC:632,peak:3776
ADC:608,peak:3776
ADC:1008,peak:608
ADC:1760,peak:608
ADC:2608,peak:608
ADC:3338,peak:608
ADC:3736,peak:608
ADC:3696,peak:3736
ADC:3168,peak:3736
ADC:2316,peak:3736
ADC:1423,peak:3736
ADC:766,peak:3736
ADC:576,peak:3736
ADC:792,peak:576
ADC:1392,peak:576
ADC:2240,peak:576
ADC:3056,peak:576
ADC:3616,peak:576
ADC:3776,peak:576
ADC:3462,peak:3776
ADC:2752,peak:3776
ADC:1840,peak:3776
ADC:1031,peak:3776
ADC:608,peak:3776
ADC:632,peak:608
ADC:1088,peak:608
ADC:1856,peak:608
ADC:2690,peak:608
ADC:3424,peak:608
ADC:3760,peak:608
ADC:3680,peak:3760
ADC:3082,peak:3760
ADC:2240,peak:3760
ADC:1344,peak:3760
ADC:736,peak:3760
ADC:576,peak:3760
ADC:864,peak:576
ADC:1472,peak:576
ADC:2310,peak:576
ADC:3136,peak:576
ADC:3680,peak:576
ADC:3760,peak:576
ADC:3424,peak:3760
ADC:2656,peak:3760
ADC:1760,peak:3760
ADC:992,peak:3760
ADC:608,peak:3760
ADC:646,peak:608
ADC:1120,peak:608
ADC:1904,peak:608
ADC:2752,peak:608
ADC:3440,peak:608
ADC:3776,peak:608
ADC:3648,peak:3776
ADC:3056,peak:3776
ADC:2168,peak:3776
ADC:1295,peak:3776
ADC:704,peak:3776
ADC:576,peak:3776
ADC:880,peak:576
ADC:1520,peak:576
ADC:2368,peak:576
ADC:3168,peak:576
ADC:3696,peak:576
ADC:3744,peak:576
ADC:3376,peak:3744
ADC:2594,peak:3744
ADC:1692,peak:3744
ADC:934,peak:3744
ADC:608,peak:3744
ADC:655,peak:608
ADC:1150,peak:608
ADC:1934,peak:608
ADC:2800,peak:608
ADC:3462,peak:608
ADC:3760,peak:608
ADC:3610,peak:3760
ADC:3008,peak:3760
ADC:2144,peak:3760
ADC:1264,peak:3760
ADC:678,peak:3760
ADC:576,peak:3760
ADC:906,peak:576
ADC:1566,peak:576
ADC:2416,peak:576
ADC:3202,peak:576
ADC:3696,peak:576
ADC:3738,peak:576
ADC:3334,peak:3738
ADC:2544,peak:3738
ADC:1648,peak:3738
ADC:899,peak:3738
ADC:576,peak:3738
ADC:704,peak:576

sample wave, note peaks and mid point values

[flotulopex]

Oh, I get it now, the "plotter".

I just need to monitor a current level that will trigger a relay.

I do have ACS712 but the problem is, the current has to pass inside (though) the component meaning I would need to modify the cabling inside an electric board where it is intended to be installed. But I want to avoid this - it has to be like SHELLY energy counters or so.

I just received a module, an analog AC Current Sensor SEN0211 unsing a YHDC current transformer: DFROBOT. I'll give it a try.

[flotulopex]

you cannot use a current transformer that way without a burden resistor

Does this mean there is no resistance inside the sensor?

[richard]

Does this mean there is no resistance inside the sensor?

can't tell, the picture is too blurry to read properly but i see no reference to a resistor mentioned it the bits i can read
post a link to data sheet


edit
ps, found this so no resistance inside the sensor

[flotulopex]

no resistance inside the sensor

Again as always: R T Full M