Nick F
Guru
- Joined
- Sep 2, 2020
- Messages
- 689
- Location
- Canada
- Vessel Name
- Callisto
- Vessel Make
- 1974 Grand Banks 42 Classic, Hull 433
I have acquired an older ProMariner 80 amp charger which I want to use as a manual addition to my inverter driven charge rate when recharging from generator at anchor.
This charger is the old style simple type, massively heavy, and its output is regulated by a tricky system called "ferromagnetic resonance". (I now know because I searched online). There is a separate winding on the transformer connected to a capacitor similar to those used for single phase motor starting.
The trouble is that this charger shuts down too early, because it is designed to "float charge" - there being only a single step in its regulation method.
Here is my question:
How can I change the output so that it does not cut back at, say, 13.6V, but at, say 15.0V? Can I change the capacitance? Do I need to go higher or lower? Would a resistor in series with the capacitance give the desired effect?
Looking forward to hearing from someone from the old days when this was the state of the art!
This charger is the old style simple type, massively heavy, and its output is regulated by a tricky system called "ferromagnetic resonance". (I now know because I searched online). There is a separate winding on the transformer connected to a capacitor similar to those used for single phase motor starting.
The trouble is that this charger shuts down too early, because it is designed to "float charge" - there being only a single step in its regulation method.
Here is my question:
How can I change the output so that it does not cut back at, say, 13.6V, but at, say 15.0V? Can I change the capacitance? Do I need to go higher or lower? Would a resistor in series with the capacitance give the desired effect?
Looking forward to hearing from someone from the old days when this was the state of the art!