Theremin circuit is a device which generates musical effects in response to the capacitive proximity of a human hand. This is the only musical instrument known to the writer that […]
Precision Rectifier Circuit
This circuit can be used to convert an AC signal into DC output with extremely high precision. The post explains a simple precision rectifier circuit using just two opamps. This […]
Sine Wave Oscillator Circuit
This simple oscillator circuit can be used to generate symmetrical sine wave frequency output. To maintain oscillation the op. amp. must have a gain equal or exceeding this attentuation which […]
Simple Metal Detector Circuit
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 […]
Simple Neon Flasher Circuits
The post details about a few simple neon flasher circuits, which will create beautiful flashing light effect using ordinary neon bulbs. The ionization potential of a neon used in the […]
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 […]