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Insulation tester (STM8)

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DeepOne

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This device provide insulation resistance measurement in range 1...99MOhm under 500 or 1000V test voltage. if resistance >99M displayed "FF", if <1M - "LL".
steel transformer taken from 220VAC/5VDC wall socket adapter, low voltage coil rewinded (that's easy). also mcu do some battery control functions.
 

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  • hex_pcb_schm.zip
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slightly improved version
 

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  • hex_pcb_schm.zip
    50 KB · Views: 103

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