Looking for Ni-MH 2500mA battery charger schematic

[Mko]

Ni-MH battery Charger

Hi all, Can anybody offer me charger schema for Ni-MH 2500mA battery?

Thanks.

 

[ender84567]

Re: Ni-MH battery Charger

check data sheets, companies like LT and TI make discrete charging regulators and the datasheets should explain everything needed to build one.

 

[munich1806]

Re: Ni-MH battery Charger

Check the Microchip site. You can find a lot of reference design there.

 

[IanP]

Re: Ni-MH battery Charger

Try this one:
**broken link removed**
As it is rated for 1800mAh, and your battery is 2500mAh, it may need some adjustments (4.7Ω resistor can be replaced with, say, 3.9Ω), but the idea is there ..

Regards,
IanP

 

[Mko]

Re: Ni-MH battery Charger

Try this one:
**broken link removed**
As it is rated for 1800mAh, and your battery is 2500mAh, it may need some adjustments (4.7Ω resistor can be replaced with, say, 3.9Ω), but the idea is there ..

Regards,
IanP

Thanks for answer.I tried to use PSpaice to simulate charger circut, but I don't know what can I use instead battery during simulation, because there are not battery models.

 

[IanP]

Re: Ni-MH battery Charger

Maybe this will be of any help to you:
**broken link removed**
see pages around 270 ..

Regards,
IanP

 

[Mko]

Re: Ni-MH battery Charger

Maybe this will be of any help to you:
**broken link removed**
see pages around 270 ..

Regards,
IanP

Hi,

I have found Ni-MH battery charger circuite based on NE555. Is that true to charge Ni-MH battery with current pulses or with constant current?