Re: 6v positive ground with 12v output! Best of both worlds
Posted by HH56 On 2022/8/5 11:08:09
After some more thought, that commercial unit may not do the job you want it for. I think I considered it for another project but after reading the info more closely the 12v is only available when starting and not when driving down the road.
A few years ago I decided to make a module to work a 12v AC in a 6v car. In theory it is good and does what I wanted but never actually finished the project to know if it would have been successful long term and in real time. Maybe you could take something along those lines and make it work. Of course the relays and other components would need to be substantially upsized as I only used small batteries and planned for a max 20 amps out. Also, not sure if the polarity protect circuit R1 provides is needed. I threw it in to avoid any explosions if the remote battery accidentally got reversed. It does always have a small drain on the battery so not suitable for a long period of inactivity without disconnecting the main battery.
Attach file:
module.jpg (79.38 KB)
IMG_1481.jpg (210.33 KB)
A few years ago I decided to make a module to work a 12v AC in a 6v car. In theory it is good and does what I wanted but never actually finished the project to know if it would have been successful long term and in real time. Maybe you could take something along those lines and make it work. Of course the relays and other components would need to be substantially upsized as I only used small batteries and planned for a max 20 amps out. Also, not sure if the polarity protect circuit R1 provides is needed. I threw it in to avoid any explosions if the remote battery accidentally got reversed. It does always have a small drain on the battery so not suitable for a long period of inactivity without disconnecting the main battery.
Attach file:
module.jpg (79.38 KB)
IMG_1481.jpg (210.33 KB)
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