I want to make an extremely basic Battery Charger for 4 Nicads in series.
I have a Transformer and a Bridge rectifier.
I am hooking the Output of the Bridge Rec. to an LM317 configured as a Constant Current Regulator providing 120 milliamps.
This CC circuit is simply a 10 Ohm resistor between the Adjust Pin and the Output Pin.
The 4.8 Volt battery pack connects betweeen the adjust Pin and earth.
Should I include an Electrolytic capacitor for Filtering anywhere or do Battery Chargers work better unfiltered?