I found this PIC based charging circuit online. The full article is here
NiCd Battery Charger
My question is how can PIC pin 18 get an accurate reading from the battery? The current to the battery is either that for full charge or trickle charge never off.
I will be charging a 750 mAh NiMh pack with 3AAA cells. Instead of the 1R0 5Watt resistor I will use a 16R 1/4 watt which should result in a charge current close to C/10.
3v0
![figure3.gif figure3.gif](https://www.electro-tech-online.com/data/attachments/43/43291-1e4f6d1977b29973413f929942629331.jpg)
NiCd Battery Charger
My question is how can PIC pin 18 get an accurate reading from the battery? The current to the battery is either that for full charge or trickle charge never off.
I will be charging a 750 mAh NiMh pack with 3AAA cells. Instead of the 1R0 5Watt resistor I will use a 16R 1/4 watt which should result in a charge current close to C/10.
3v0
![figure3.gif figure3.gif](https://www.electro-tech-online.com/data/attachments/43/43291-1e4f6d1977b29973413f929942629331.jpg)