magnetic levitation circuit | Next Electronics

There is an advantage in using continuously active PWM signals. The main reason is that the asynchronous frequencies of the PWM core and microcore can sometimes result in a shortened PWM pulse. The servo recognizes this as a command for...

Pulse Operation of DC Solenoids

The solenoid operates with pulse action, receiving a brief surge of five to six times its rated voltage, followed by a holding voltage that is less than half of its rated voltage. This method significantly reduces application time, and the...

12V Speed Controller/Dimmer

This circuit serves as a speed controller for a 12V motor with a continuous rating of up to 5A or as a dimmer for a 12V halogen or standard incandescent lamp rated up to 50W. It regulates power to the...

PWM LED Dimmer/ Brightness Control by 555 Timer With Video Simulation

How to change the brightness of an LED. Are LED lights dimmable? Is it possible to adjust the brightness of LEDs? An LED is essentially a diode; when the forward voltage exceeds 0.7 volts, it begins to emit light, and...

PWM Motor Speed Control Using Class D Audio Amplifier

This is a Class D audio amplifier circuit that is used to control PWM motor speed. This circuit has two advantages for battery-powered portable devices. First, The Class D audio amplifier circuit is designed to efficiently manage the speed of...

PWM Modulator

If you have considered experimenting with pulse-width modulation, this circuit serves as an excellent starting point. Simplicity has been prioritized in the design, utilizing a dual... This circuit is designed to facilitate experimentation with pulse-width modulation (PWM), a technique widely used...

PWM to vary the light intensity of a 220V bulb

A 220V bulb is connected such that one end of the relay is linked to a 220V DC source and the other end is connected to ground. The switching between these two points is controlled by a PWM output as...

Hall effect sensor as Toilet Tank Refiller

The 12 Volt power in my application comes from a small solar power system; it may also be provided by a suitable wall-wart DC power supply. The cistern is located below the toilet tank; the pump moves the water up...

Pulse Width Modulation DC Motor Control

Often, people attempt to control DC motors with a variable resistor or variable resistor connected to a transistor. While the latter approach works well, it generates heat and hence wastes power. This simple pulse width modulation DC motor control eliminates...