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Stepper Motor Generator – Circuit Schematic
Stepper Motor Generator
Stepper motors are a subject that keeps recurring. This little circuit changes a clock signal (from a square wave generator) into signals with a 90-degree phase...
Stepper Motor Controller – Circuit Schematic
Stepper Motor Controller
Stepper motors are available in several versions and sizes with a variety of operating voltages. The advantage of this general-purpose controller is that is can...
PWM Dimmer/Motor Speed Controller – Circuit Schematic
PWM Dimmer/Motor Speed Controller
This is yet another project born of necessity. It`s a simple circuit, but does exactly what it`s designed to do - dim LED lights or control the speed of 12V DC ...
Polarity Reverser – Circuit Schematic
Polarity Reverser
There are systems in which it is imperative that the supply voltage of, say, a motor, always has the correct polarity. It is, of course, possible to use a bridg...
Motor Turn Stall Detector – Circuit Schematic
Motor Turn Stall Detector
In single phase AC induction motors, often used in fridges and washing machines, a start winding is used during the starting phase. When the motor has reached a...
Gentle Breeze – Circuit Schematic
Gentle Breeze
Where there is heat, let us bring cooling: a fan will do the job, but unfortunately fans are usually noisy. In many cases there is no need for the fan to run co...
Efficient Fan Speed Controller – Circuit Schematic
Efficient Fan Speed Controller
A partial solution to quietening noisy PCs can be to reduce the speed of internal cooling fans. Low-cost fan speed controllers are available, but they often emp...
Discrete PWM Generator Circuit – Circuit Schematic
Discrete PWM Generator Circuit
PWM waveforms are commonly used to control the speed of DC motors. The mark/space ratio of the digital wave-form can be defined either by using an adjustable an...
12V Speed Controller/Dimmer – Circuit Schematic
12V Speed Controller/Dimmer
This handy circuit can be used as a speed controller for a 12V motor rated up to 5A (continuous) or as a dimmer for a 12V halogen or standard incandescent lamp ...
Bi-directional Control Of Motors And The H-Bridge – Circuit Schematic
Bi-directional Control Of Motors And The H-Bridge
Reverse the DC power connections on such a motor and its shaft will rotate in the opposite direction. One way to control direction is to use switches arranged i...
H-Bridge – Circuit Schematic
H-Bridge
To drive a DC motor, we need to reverse the voltage across it to control the direction of rotation. To do this, we use what is called an H-bridge. The H-bridge ...
Using C-52 EVB for simple robot experiments – Circuit Schematic
Using C-52 EVB for simple robot experiments
Basic circuit of using L293 formsan H-Bridge Driver is shown in Figure 1. As shown for such inductive loadas DC motor, external diodes for suppressing back EMF ...
A Smart Barn Door Drive for Astrophotography – Circuit Schematic
A Smart Barn Door Drive for Astrophotography
A tracking mount for trusty Minolta SRT-101. My untracked photos of Hyakutake had not done the comet justice; the exposures were too short. If one mounts a came...
A Unipolar Stepper Motor Driver – Circuit Schematic
A Unipolar Stepper Motor Driver
The drive circuits for Unipolar stepper motors are usually very simple. In its simplest form, a transistor or MOSFET is used to drive each section of the windin...
A Simple Dual H-Bridge – Circuit Schematic
A Simple Dual H-Bridge
H-bridge is frequently used to control DC motors and stepper motors. When controlling a bipolar stepper motor, two full H-bridges are needed. There are many H-b...
Parallel Port Stepper Motor Driver With Discrete Components – Circuit Schematic
Parallel Port Stepper Motor Driver With Discrete Components
Using PC`s parallel port is a convenient way to control a stepper motor. For unipolar stepper motors, up to two motors can be controlled with the 8bit data line...
Saftronics CV10 Compact Vector AC Drives – Circuit Schematic
Saftronics CV10 Compact Vector AC Drives
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Model 1681 Instruction Manual – Circuit Schematic
Model 1681 Instruction Manual
This manual is applicable to all integral horsepower DC motor controls of this series from 40 HPto 300 HP. The integrated circuit regulator selection of these D...
Electrical Stepper Motor Manufacturers – Circuit Schematic
Electrical Stepper Motor Manufacturers
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The H-Bridge – Circuit Schematic
The H-Bridge
This is the Snap Circuits Motor Control IC, or H-bridge. At the top of the figure you can see the electronic schematic of the Motor Control block. On.....