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limiting voltage out of a bridge rectifier
Posted: Sun Mar 23, 2014 11:45 am
by delcowizzid
so my boat wasnt charging due to blown rectifier so i went and got one from jaycar and fitted it.works a charm but i need to limit voltage as when the battery gets charged volts end up heading north of 16 volts as they do on evinrudes with only a rectifier not the rec/reg built in one.whats the simplest way to control max volts to 14v
my rectifier is like below jaycar 600v30 ish amps.total charging system current of the engine is around 6 amps supossidly
Re: limiting voltage out of a bridge rectifier
Posted: Sun Mar 23, 2014 12:00 pm
by vlad01
get a 13.8V regulator. Just checked jaycar, looks like they dont sell them anymore.
Once you get a reg, you should be able to add a power transistor on the output to boost current as most TO 220 case type regs only do 1-3A.
something like this.
Re: limiting voltage out of a bridge rectifier
Posted: Sun Mar 23, 2014 8:16 pm
by Circlotron
Another option is a shunt regulator connected directly *across* the battery. It does nothing until the battery voltage starts to exceed 14.2 volts. Above this it starts to pull current proportional to how far the voltage is above the set point. All in (6 amps) by say 14.4 volts.
Re: limiting voltage out of a bridge rectifier
Posted: Mon Mar 24, 2014 12:18 am
by vlt304
try one of these out they are voltage regulated the 3 yellows are ac inputs ret to battery black to ignition green to ground
http://www.ebay.com.au/itm/12V-Rectifie ... 3cc5273d50
Re: limiting voltage out of a bridge rectifier
Posted: Mon Mar 24, 2014 12:34 am
by vlt304
it has to be the 6 wire type not a 4 or 5 wire one.
Re: limiting voltage out of a bridge rectifier
Posted: Tue Mar 25, 2014 10:45 am
by delcowizzid
cheers guys few possible solutions to try