555 timer

IoT Based AC Fan Speed Control using Smart Phone with NodeMCU and Google Firebase

In this article, we are building an AC Fan Regulator Circuit, which is able to control the speed of the fan by restricting the...

AC Phase Angle Control for Light Dimmers and Motor Speed Control using 555 Timer and PWM Signal

Home automation systems are increasingly gaining popularity day by day, and nowadays it's become easy to turn on & off...

AC Lights Flashing and Blink Control Circuit Using 555 Timer and TRIAC

Sometimes, we might need an AC bulb flasher circuit that can blink a series of bulbs in a particular time interval for...

Positive and Negative Charge Pump Circuit

In a previous article, I have shown you how you can build your own switched capacitor voltage converter circuit using the...

Charge Pump Circuit - Getting Higher Voltage from Low Voltage Source

The situation is simple – you have a low voltage supply rail, say 3.3V, and you want to power something that needs 5V. This is...

Simple Curve Tracer Circuit: Tracing the Curve for Resistor, Diode and Transistor

Most of electronics deals with Tracing Curves, be it the characteristic transfer curve for a feedback loop, a resistor’s...

Simple H-Bridge Motor Driver Circuit using MOSFET

At the outset driving a motor might seems like an easy task – just hook the motor up to the appropriate voltage rail and it...

Frequency to Voltage Converter Circuit

Frequency to voltage converter converts the frequencies or pulses to the proportional electrical output such as voltage or...

Sawtooth Waveform Generator Circuit

In electronics, waveforms are mostly plotted against voltage and time. The frequency and amplitude of the signal can vary...

24V Flasher Circuit

Different Electronic systems operate in different level of voltages. Most commonly the digital electronic systems like...