I'm using an ACS712 based current sensor board
For testing purposes I have connected Vcc and GND to a bench power supply, OUT and Gnd to a general purpose oscilloscope and connected the terminal current sensing inputs in series to a 12V(rms) AC transformer powering a 12 Ohm load providing 1amp of current through the board.
However after switching the 12V ac supply a few the board cuts out producing a flat 2.5V DC output.
Initially I thought this could be thermal shut down however the chip is barely over room temp
Behaviour seems to be like the board is cutting out as the noise normally present on the output pin with no input is supressed.
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