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Instructions:
1. When L, N is connected to AC220V. VCC, GND input DC5V-30V. OUT, GND connected to the oscilloscope can get a sine wave.
2. Adjust the potentiometer can change the amplitude of the output waveform (the middle value will not change during the adjustment process), the waveform of the range of 0-VCC;
3. If the waveform is distorted in the process of increasing the amplitude, it can be solved by appropriately increasing the operating voltage VCC. If you want the middle value of the waveform to move to 0 o'clock, you can connect a capacitor of about 105pF in series with OUT to filter out the DC component in the waveform.
Package Includes:
4 x Voltage Transformer Module
1 x Dupont Line
DM
Reviewed in the United States on July 20, 2022
I made a few of them work by desoldering the transformer off the board. Something wrong with the opamp provided
Robert A. Ponto
Reviewed in the United States on January 29, 2022
I will measure 5 amps AC at 60hz with a 100 ohm resistor across the output.At 60hz it saturates at 1.5 amps without an external load.With 100 ohm load it puts our 100mv ac for 1 amp input.
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