A simple bicycle flashing light circuit using LED arrays is explained below, which will produce decorative, alternate flashing effect on the connected LEDs. The 555 circuit design below is a […]
Light Operated Relay Circuit
In this post you will learn about a very simple light activated relay circuit in which a relay is toggled On/OFF in response to the light or darkness using a […]
Theremin Circuit
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 […]