Vintage Battery Charger - Voltage too high
Hi Everyone
I have inherited from my father a 5 amp battery charger (lead acid) which he made sometime around 1940. It has a Sangamo Western ammeter which was returned to the factory for a complete rebuild a couple of years ago (They asked if they could buy it from me for their museum but it has too much sentimental value to me).
By flicking a switch the battery charger is intended to charge at either 6v (actually need around 7.2v) or 12v (actually need around 13.5v - 14.2v). Unfortunately the actual voltages are 9.6v and 19 volts.
Can anyone help with a simple method to bring the voltages back into line?
Thank you in advance.
Hi Everyone
I have inherited from my father a 5 amp battery charger (lead acid) which he made sometime around 1940. It has a Sangamo Western ammeter which was returned to the factory for a complete rebuild a couple of years ago (They asked if they could buy it from me for their museum but it has too much sentimental value to me).
By flicking a switch the battery charger is intended to charge at either 6v (actually need around 7.2v) or 12v (actually need around 13.5v - 14.2v). Unfortunately the actual voltages are 9.6v and 19 volts.
Can anyone help with a simple method to bring the voltages back into line?
Thank you in advance.
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