Circuit Project Electronic

Introduction
With this mAh meter you can check the mAh capacitance of your NiCad or NiMH rechargeable batteries
Normally the cheaper NiCad AA-type cells have a capacitance of 500-750mAh (NiCAD) the more expensive
NiMH AA-cells types are up to 1800mAh.
I built this circuit because the capacitance of some of my older NiCad batteries seemed to be quite [...]

Introduction
With this mAh meter you can check the mAh capacitance of your NiCad or NiMH rechargeable batteries
Normally the cheaper NiCad AA-type cells have a capacitance of 500-750mAh (NiCAD) the more expensive
NiMH AA-cells types are up to 1800mAh.
I built this circuit because the capacitance of some of my older NiCad batteries seemed [...]

This small Timer circuit by sam(good electronic man).
sam say “A small circuit that can find a lot applications of measurement time. She has the possibility us inform with sound signal from the BZ1. At the same time, exist the possibility drive a external circuit via the optocoupler IC2, after we connect the applicable circuit in [...]