K7200

Ali7 · February 24, 2010, 9:07pm

Hi,
Can I use my K7200 like a charger ?
Thanks

VEL417 · February 25, 2010, 7:36am

Yes.
Carefull: Only for NiCd/NiMH or Lead Acid batteries. It will never stop charging, you will have to disconnect the batteries after charging.

Ali7 · February 25, 2010, 9:58am

Thanks, but I have a little problem with the limitation of current , when I put it in zero I still have 1,70A !!!

VEL417 · February 25, 2010, 10:18am

Check your assembly, espacially the shunt resistor wires, and redo the calibration of the current limit circuit.

Ali7 · February 25, 2010, 10:24am

OK, I will check the resistors R37, R38, R39 and R40

Ali7 · February 25, 2010, 11:59pm

Hi,
I checked the shunt resistor wires and I found effectively some problems with quality of the solder, as you can find in the pic

The reparation phase

Fixed the problem

Then no problem with the current limitation,
but after checking the system with the oscilloscope the ondulation is between 800 to1200mV
, need some helps please

Ali7 · February 26, 2010, 1:08pm

any suggestion is welcome!!!

VEL417 · February 26, 2010, 1:32pm

This is quite normal. When in current limit mode it continuously adjusts the voltage in order to maintain a stable current.

Ali7 · March 3, 2010, 2:03pm

Thanks ,
My system works perfectly