Looking for a NiMh 4300mAh charger

[fjpompeo]

Just got two SONY 4300mAh AA size batteries and need a 2 hour fast charger to then. I mean a 2400mA constant current plus inteligent end of charge circuit.

Regards,

Fernando

 

[IanP]

lm350 nimh

Have a look at this project:
http://www.angelfire.com/electronic/hayles/charge1.html
With some minor modifications (LM317 --> LM350 and 1Ω --> 0.52Ω) you should be able to increase the output current to 2.4A ..

Regards,
IanP

 

[fjpompeo]

sony 4300mah aa

Thanks IanP for your prompt reply but the code is not available for download so a charger with an ASIC is more reliable. One with let's say MAX712, BQ2003, CCS9620 and so on. I already have some schematics but the current is very low and total charge will take a long time e.g. 6hrs up to 10hrs and I need a two hour charger.

Regards,

Fernando

 

[VVV]

sony 4300 mah aa

I would use one of these Linear Tech chips, particularly the LTC4010, LTC4011.
http://www.linear.com/pc/categoryProducts.do
I am sure you can easily squeeze 4.3A out of it.

 

[Code Warrior]

sony 4300 mah

Hello,
Go for Maxim make speacial battery charger IC.
Bye