This circuit can be used to detect the presence of any metal within the detection range of the sensor coil. In this post we will learn how to make a […]
Digital Volume Controller Circuit
The circuit shown here is based on the switching action of transistors, which produce a digital up/down control of an amplifier volume. Volume of a stereo deck can be controlled […]
Water Level Controller Circuit using IC 555
The explained IC 555 based Automatic water level control circuit is a straightforward approach, project. It could automatically switch ON and OFF of the domestic water pump set based on […]
SCR Battery Charger Circuit
This circuit can be used to automatically charge a battery through an SCR and cut off when the battery reaches full charge level. Circuit Explanation A straightforward battery charger in […]
Flashlight Controlled Remote Control Switch Circuit
This flashlight remote control circuit can be used to switch ON/OFF any electrical device from a distance by pointing an illuminated flashlight towards the device. It is sometimes very annoying […]
Accurate Analogue Frequency Meter Circuit
To measure frequency one does not immediately have to ‘go digital’. The analogue approach will invariably prove simpler and cheaper, in particular when the analogue readout (the multimeter) is already […]