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Can I install the 12V pulser permanently in my battery charger ?

April 26, 2017battery charger install permanently Pulser

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Can I install the 12V pulser permanently in my battery charger ?

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NO! Unconnected battery chargers (not connected to a battery) can put out peak voltages 20V or higher. If the pulser is permanently installed in the charger AND the charger is energized AND not connected to a battery, C1 will charge up to a damaging voltage to the 555.