A
amdx
- Jan 1, 1970
- 0
I recently repaired a marine battery charger. It was set up to charge 3
separate 12v batteries. The repair was simple the charger had a *shorted
40uf 660v ac capacitor. The capacitor is connected across a winding on
the transformer. This is the usual constant voltage transformer
configuration. This is the extent of what I think I know.
Can someone describe the operation of a constant voltage transformer
that has 3 windings, input, output, and a third winding that is
connected across a capacitor.
I've seen these for decades but never have understood the operation.
Mikek
*bonus, why didn't the shorted capacitor (**measured 1.5 ohms) blow a
fuse or overheat the winding on the transformer.
**1.5 ohms plus 0.7 ohms lead resistance.
separate 12v batteries. The repair was simple the charger had a *shorted
40uf 660v ac capacitor. The capacitor is connected across a winding on
the transformer. This is the usual constant voltage transformer
configuration. This is the extent of what I think I know.
Can someone describe the operation of a constant voltage transformer
that has 3 windings, input, output, and a third winding that is
connected across a capacitor.
I've seen these for decades but never have understood the operation.
Mikek
*bonus, why didn't the shorted capacitor (**measured 1.5 ohms) blow a
fuse or overheat the winding on the transformer.
**1.5 ohms plus 0.7 ohms lead resistance.