Servo Amplifier circuit | Next Electronics

Motor speed controller with timer 555 circuit

Pulse width modulation (PWM) is a technique to control analog circuits with a digital output. PWM is used in many applications, especially to control light intensity and speed on motors. A PWM circuit makes a square wave with a variable...

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...

Servo Reversers

This project describes a simple servo reverser that can be inexpensively constructed using a CD4001 NOR gate, four resistors, three capacitors, and one variable potentiometer (see schematic below). The proposed circuit utilizes the CD4001 NOR gate as the primary component for...

USB Powered Audio Power Amplifier

This circuit of multimedia speakers for PCs features a single-chip design, operates on a low-voltage power supply, is compatible with USB power, and allows for easy heat dissipation. The multimedia speaker circuit is designed to enhance audio output for personal computers,...

Slow Servo

Realistic flap and landing gear actuation. This circuit slows the speed of a conventional proportional servo. It regulates the time required for full servo rotation from 1 to 10 seconds without any reduction in the servo's torque, and every servo position...

Digitally adjustable precision reference driven via PWM

This simple circuit converts a 5V PWM signal into a variable precision reference voltage with a range of -2.5V to +2.5V. Many designs, such as a digitally controlled power supply or a programmable dummy load, require a Digital to Analog...

DC Motor Speed Controller

This article demonstrates how to control a DC motor using an H-bridge driver chip with PWM output from a PIC microcontroller for speed control. While a PIC microcontroller is utilized, other controllers such as AVRs, Basic Stamps, and certain Picaxe...

PWM Control Dimming Halogen Lamp

The PWM control dimming circuit for a halogen lamp is illustrated. The halogen lamp operates at a rated voltage of 12V with a nominal power of 20W. This dimmer circuit is capable of adjusting the intensity of the halogen lamp...

Direction and speed control

This circuit functions similarly to the one depicted in Fig. 57-4. The key differences include the placement of the field across the rectified supply and the armature being positioned within the SCR bridge. Therefore, the field current is unidirectional while...