VAC Energy Meter Power Sensor Board, HLW8032 Isolated Version
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- Based on HLW8032 full isolated scheme design, use isolated current and voltage sensor.
- Device support up to 380VAC, 10A.
- On board LDO LM7805, power supply for HLW8032 from 5V-24V.
- Serial data output from TX pin of HLW8032, baudrate 4800bps, please notice.
Energy meter series：
Note this calculation method is different to R1, please refer to wiki page ZMPT section.
firstname.lastname@example.org (verified owner) –
This board not really works with 5V, because the Voltage regulator not LDO, it needs at least 7V for a stable 5V output. I used an USB charger as a supply, and the result was very uncertain (the otput was only 3.8V and the IC didn’t tolarate it). After I shorted the regulator’s input and output it worked fine. The current transformer’s burden resistor is a 100 mOhm resistor and according to it’s datasheet it requires 50 Ohm for proper working (this will cause much bigger voltage, but you can use a voltage devider).
By the way, the product works with Arduino and MCU.