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
Sal,
My digital meter being far away from the terminals has nothing to do with it's accuracy in showing 7345 terminal voltage if the meter is drawing no current and there are no other loads off the wire leading to my voltmeter from the converter's terminals.
How is turning on LED lights no proof? Each one loads the 7345 a tiny bit more. If the 7345 has a feedback control loop with large enough correction bands (i.e. it's control loop is "sloppy"), then it's terminal voltage is going to sag a tiny bit even with miniscule LED light loads. I just used the LED light turn-on sequence as a convenient way to quickly add loads while observing the deltas in the 7345's voltage output. Each delta in voltage perfectly corresponded with each LED switch turn-on. The 7345 either has an open ended output stage or has a very sloppy negative feedback control loop.
Sal, as a reminder regarding your 7345 experiment ... read about your 2009 7345 experiment in the link I show above.
My digital meter being far away from the terminals has nothing to do with it's accuracy in showing 7345 terminal voltage if the meter is drawing no current and there are no other loads off the wire leading to my voltmeter from the converter's terminals.
How is turning on LED lights no proof? Each one loads the 7345 a tiny bit more. If the 7345 has a feedback control loop with large enough correction bands (i.e. it's control loop is "sloppy"), then it's terminal voltage is going to sag a tiny bit even with miniscule LED light loads. I just used the LED light turn-on sequence as a convenient way to quickly add loads while observing the deltas in the 7345's voltage output. Each delta in voltage perfectly corresponded with each LED switch turn-on. The 7345 either has an open ended output stage or has a very sloppy negative feedback control loop.
Sal, as a reminder regarding your 7345 experiment ... read about your 2009 7345 experiment in the link I show above.
