ac measurement

Hi Need some help. We have 220V, 3 phase AC (delta) so we have converted it to a star system to get neutral point. When we measured between two phases we get 440V AC. Then we took one phase out of this star system and connected it to a Hi-Link 5V module. When we connected some load to this...

Hi all, I'm currently designing a low-cost domestic AC frequency meter. I decided to use Analog Device's MAX22707 (datasheet) precision zero crossing detector IC after obtaining promising results in the first stage of prototyping. Then, I designed a custom PCB which I'm currently testing...

Dear community, I'm currently working on a setup for testing the accuracy of an impedance sensor. The sensor should be able to measure impedances in the range of 5kOhm-1MOhm. My testing setup consists of resistors and analog switches which are able to change the impedance between the two...