Briggs charger automation up date
Some parts came in and had some time to play : )
Some of the parts have come in and I have it key starting and manually charging.
What I am using is a car starter solenoid wired to the 12 volt pm motor and a blocking diode a cross the solenoid contacts .
I pick up from Harbor Freight a Battery tester with a 100 amp test load an volt meter.
Paid only 13 bucks for it. And am using it to discharge the 12 volt battery used in testing.
You can only use it in 10 sec busts then you have to let it cool off .
I took the battery down to 12.5 volts started the engine had the throttle set for an out put of 14.5 volts.
It start charging with 15 amps when the battery voltage top out at 14.5 I shut off the engine the battery
voltage was 13.7 volts. That really made my day : )
Had some more fun at the test bench I had built a battery voltage monitor using the Lm3914 Bar/Dot driver the one from Home power magazine.
I clipped out the LED that indicated 14.5V when lit and wired in its place a 5V relay with clamping diode when I ran my bench power supply to 14.5V the relay closed . I will use this to turn on a 12V relay with a larger gap at the contacts for the engine kill switch . This will be a down and dirty until
The rest of the parts show up for a better charge controller.
I think I have stage one whipped I can key start it and I have a way to kill the engine when the battery is
fully charged.
Stage two will be to tie in the PLC and getting it to start when the battery is low.
Old F
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