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
Not correct at all. The new 1N4148 diode clamps output voltage. If cable resistance is high, then current is limited to less than max.
Instead of making wild accusations, why don't you do some analysis first, as I suggested before. The whole charging system is probably protected by a fuse already. The size of that fuse is usually sized to protect the cable we're talking about.
You keep bellyaching about voltage sag in your converter. Make the mod and you'll have no more sag. You'll see a 70% performance gain.
Sal
Instead of making wild accusations, why don't you do some analysis first, as I suggested before. The whole charging system is probably protected by a fuse already. The size of that fuse is usually sized to protect the cable we're talking about.
You keep bellyaching about voltage sag in your converter. Make the mod and you'll have no more sag. You'll see a 70% performance gain.
Sal
pnichols wrote:
Here's a simplified explanation of a potential danger in using a circuit modification like this without the proper charging current flow constraints: His modification will force full 7345 output voltage (as set by the error circuit parameters and components) unto the batteries' terminals REGARDLESS of the gauge of the wire between the 7345 and the batteries. Whatever the batteries will accept, current-wise, with full 7345 voltage (as set by the circuit parameters and components) onto their terminals is what will flow through this wire regardless of the size of the wire.
