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Recent Forum Posts

Re: YHDC current sensor - the theory please

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
richard Today, 01:34

Re: YHDC current sensor - the theory please

the output is intended to be plotted in the freely available easy to use arduino plotter, the average human will have nil chance of interpreting the data with such a small number of samples. if your...
richard Today, 00:55

Re: YHDC current sensor - the theory please

you cannot use a current transformer that way without a burden resistor.
by voltage sensor do you mean ACS712 or similar ?
if so that circuit is incorrect, typical use
10022
richard Today, 00:06

Re: YHDC current sensor - the theory please

Sorry guys for not reponding earlier - I'm still waiting for 20A:50mA current sensor to arrive; my 100A:50mA are far too low and "out of range" for what I intend to measure.

BUT I could grab a...
flotulopex Yesterday, 21:27

Re: YHDC current sensor - the theory please

adjust resister to for the mid current used incase of some nonlinearity... shotkey diode has .3 volt drop
10016
amgen - 2nd December 2025, 01:17

Re: YHDC current sensor - the theory please

You might want to specify the model number of the sensor since there are a number of different types, and the circuit shown may not even apply
tumbleweed - 2nd December 2025, 00:26

Re: YHDC current sensor - the theory please

Have you connected your CT as shown in your first post? That is, the bottom to 2.5V (or VRef/2) and the top to input pin AND - VERY IMPORTANT - a load resistor shown as 33ohms in diagram? You must...
HenrikOlsson - 1st December 2025, 22:20

Re: YHDC current sensor - the theory please

It can't work wired the way you described. The ac signal must be biased by vcc/2 and be less than vcc peak to peak.
If the serial baud rate is too low it will ruin the sample rate.
If the burden...
richard - 1st December 2025, 22:11

YHDC current sensor - the theory please

Richard,

I've connected my YHDC sensor one pin to ground and the other to RA5. Got readings (see hereunder).

Because I'm not sure what I'm doing right now with the current sensor, I tried to...
flotulopex - 1st December 2025, 20:26

YHDC current sensor - the theory please

...sorry Richard, didn't try your code by now - still in office.... 😬
flotulopex - 1st December 2025, 14:25

LAB-X3 Bare PCB w/Software

From £14.95
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The new LAB-X3 is microEngineering Labs, Inc.'s newest experimenter's platform. It provides a full complement of hardware peripherals for an 18-pin microcontroller such as the PIC16F84 or PIC16F628.

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