Deluxe Charge Rate Limiter for Small Capacity NiCad Batteries

Here is a deluxe version of the simple charge rate limiter, using the same idea but with the ability to charge two packs simultaneously from a single wall charger. For circuit description and parts list, see the simple charger page. Since wall chargers provide about 55 mA, you should not use this dual circuit to charge batteries at rates greater than 27 mA (for a total of 54 mA).

Circuit diagram

author:Rob Crockett 1/97,
website: http://www.electronics-lab.com