Posted by Geo-TH,In on September 28, 2022 at 13:15:47 from (184.19.47.130):
I bought this charger when in HS. I forgot to unplug charger and the alligators shorted out. I'm using diodes I salvage about 30 years ago. This is the last of my diode inventory.
Two problems. The cathodes make the metal frame of charger positive. Not good. So I made a redneck insulator using a 2x2 And sheet of aluminum. .
Now the positive is no longer touching the metal frame.
Second problem. The diode's forward bias voltage is less the orginal diodes making the output voltage 15.5v. Charging current to a fully charged battery is 15 amps. Charger is rated at 12 amps. I decided to add an inline fuse. Currently using a 20 amp fuse.
Now I need to find a 120v dimmer to reduce the 120vac input voltage. I have a used dimmer some place. Dimmer will work on this old manual charger. I only use this charger when the battery voltage is so low a smart charger won't work.
When I use this old girl I use a timer so I don't forget to unplug it.
If I have another senior moment and forget to unplug the charger. Touching the alligators will blow the fuse. Connecting charger with the wrong polarity will blow the fuse too.
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