parallax power supply 7345ru parts PWM
My 7345 is not charging the coach batteries but does supply 12power to all accessories. The transformer, fan and relays work fine. Think i need a PWM circuit for it. Contacted PP tec support and th...
Forum Discussion
The 7300 (and others) does sag under load and that includes the load of the battery charging.
You start out with the batts at 12.2 and the converter at 13.8 Connect them. Battery voltage spikes to 13.2 and converter at DC panel sags to 13.6 (say)
As the battery charges up, BOTH voltages rise, but the battery voltage rises more and eventually catches up to the converter's rising voltage when the batts are fully charged and amps have shrunk to zero flow. Batt and converter will now both be at 13.8 again, except the batt will be a tad lower due to your long wire.
But, with lights and fans etc, no way should the converter's voltage rise as you turn them on. That is backwards.
You start out with the batts at 12.2 and the converter at 13.8 Connect them. Battery voltage spikes to 13.2 and converter at DC panel sags to 13.6 (say)
As the battery charges up, BOTH voltages rise, but the battery voltage rises more and eventually catches up to the converter's rising voltage when the batts are fully charged and amps have shrunk to zero flow. Batt and converter will now both be at 13.8 again, except the batt will be a tad lower due to your long wire.
But, with lights and fans etc, no way should the converter's voltage rise as you turn them on. That is backwards.
