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Hung Chang OS615S Oscilloscope Mannual


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Can anybody help please I have the above oscilloscope and have fitted it with li-ion batteries and an appropriate charger but it dicharges the batteries slowly when left set to charge but unplugged , as in put away in the cupboard. I want to put a diade in the charge circuit to stop this but cannot work out where without the circuit diagram. Somebody out there must have one please.

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