PD or Iota for my upgrade?
I'm thinking about a converter and battery upgrade. The batteries will be wet cell lead acid 6 volt Possible T-105s or the 230AH, EGC2 from Sam's club. I'll probably go for four. (Does nayone have...
Forum Discussion
Have you taken the remote pendant apart?
Sure would like to see a schematic of the thing
There are two PD "remotes." The PD92xx series has the TCMS system built onto the main board. It uses a "remote" with a switch and an LED. No other components. I have the diagram for it. In fact, I made two of them - wired in parallel and permanently installed at two locations, so I can control the charge mode from the batteries or the main control panel. The current limit resistor for the LED is on the main board of the converter, as is the microcontroller that does all the work.
The other "remote" is for the earlier models. It's got the TCMS system inside the remote. I've never seen one of those. There is a patent that describes the circuit for that remote, and I've studied the patent circuit. IIRC, it has component values. The two circuits are nearly identical, one in the remote, and one in the PD92xx converter. The TCMS patent is here:
http://www.google.com/patents/US6184649
Modifying one of the resistors connected to one of the output pins on the microcontroller changes the boost mode voltage. Modifying another resistor changes the normal mode voltage.
