No hay artículos en el carro
No hay artículos en el carroEl módulo de inductancia mutua de corriente de salida activa de CA monofásica de 5A está equipado con la serie ZMCT103C de pequeños transformadores de corriente de alta precisión y circuitos amplificadores operativos de alta precisión para facilitar la adquisición de señal de corriente alterna dentro de 5 A.
Emm Eff
Comentado en los Estados Unidos el 12 de marzo de 2025
While these devices are nicely made I had a lot of questions. Like so many “bags” of things you find here there no details like why are there two1. Just what does this thing do.The board has a strip of 4 pins to make connections,VCC,Out, Gnd,Gnd.No answer to why two Gnd ? No answer what comes out of Out?.Is the only input from that coupled by a wire with current? Is there a limit to this current?Can we assume that VCC is 5 volts?Is this a device to verify that something works or does not work?No block or other form of illustration.ASAP I will connect a current and see what lights or smokes.My main point is that a simple drawing labled so don’t have try to see what works and a minimum expectation of success would have been nice.No I don’t want send these back. I just want it to work and want warn users what they will encounter if they attempt.
Joe Rothrock
Comentado en los Estados Unidos el 26 de marzo de 2024
I was unable to find any instructions whatsoever for this module. After a bit of testing, I found the output is similar to the ACS712 current sensors - it outputs a sine wave. This means the voltage is constantly changing, and the average voltage will be the same regardless of current flow.I wanted to use these to detect if a light was on or off by the current flow. I connected them to a analog input pin on an ESP32 running ESPhome, and by only using the max voltage I could detect a change in current flow.To adjust the sensitivity, turn the screw counterclockwise for more sensitive (smaller loads will have a bigger change in output voltage) and clockwise for less sensitive (but a bigger range of detection). The screw moves many turns (I didn't count, but around 20). At either end of the limit, you will hear a faint click inside as you turn.With the sensitivity turned all the way up, I was able to read a 0.8 volt difference with a 0.2 amp load - plenty enough to detect if a LED light was turned on or not.
harold hare
Comentado en los Estados Unidos el 3 de septiembre de 2024
returned them. So, why am I providing three stars?The vendor did contact me and offered a full refund, even though Amazon had already done that. Impressive. I like a vendor that takes responsibility. I had originally provided one star.
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