Zagcom >> Links>> Electronic Circuits  >> Electrical motor circuits >> DC motors
 

 

 

Zagcom >> Links>> Electronic Circuits  >> Electrical motor circuits >> DC motors

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 
Electrical motor controlling circuits  >> DC motors ( 46 )

General information

Articles

Circuits

  • 12V or 24V DC Pulse Width Modulator - This circuit can be used as a light dimmer or DC motor speed controller.   
  • A Microcontroller Based Motor Speed Control - article with theory and circuit   
  • A Microcontroller Based Motor Speed Control, Part 3 - This article describes a two DC motor controller using 89C2051.   
  • Audio amp makes efficient fan controller - with a simple modification, you can use an audio-amplifier IC to control a fan module   
  • Boost converter controls 12V fan from 5V supply - temperature-controlled PWM boost converter allows operation of a 12V brushless dc fan from a 5V supply   
  • Circuit generates fan-speed control - Fan noise is becoming a significant issue as electronic equipment increasingly enters the office and the home. Noise is proportional to fan speed. Consider this low-cost, self-contained analog circuit for fan-speed control. You can easily adjust the circuit for any desired linear relationship between the fan voltage and temperature.   
  • Circuit forms dc-motor switch with brake - Controlling a small dc motor without speed control sounds like a trivial task; a switch or a relay should suffice. However, several problems accompany this approach. Thic circuit can be useful for designs that don't need precise control of speed and stopping position but can benefit from enhanced deceleration.   
  • Circuits provide 4- to 20-mA PWM control - are useful when you use 4- to 20-mA current-loop signals to control a PWM signal   
  • Circuit provides bidirectional, variable-speed motor control - During the development of systems that include small motors, a simple, bidirectional motor controller with speed adjustment may be helpful. This circuit is such a controller. A transistor-based H-bridge allows two directions of rotation. A chopper controls the upper arms of the H-bridge, thereby enabling the speed adjustment. This circuit is designed to work at voltages up to 15V, but can be adapted to higher voltages.   
  • Circuit provides Class D motor control - Class D amplifier are good candidates for controlling speed and direction in small electric motors. The standard application circuit for a Class D audio amplifier requires only slight modifications. Full-counterclockwise rotation of the potentiometer corresponds to maximum-speed reverse rotation of the motor. Midscale on the potentiometer corresponds to motor off, and full-clockwise rotation of the potentiometer produces maximum-speed forward rotation in the motor. The characteristics of a given motor may allow you to eliminate the amplifier's output filter if the circuitry is near the motor.   
  • Computer controller for DC motors - This circuit is easy to build and use and it can control two DC motors of any current or voltage rating, depending on the rating of the relays. The circuit also provides two shaft encoders for positional feedback to the computer.   
  • DC Motor Speed Controller - Control the speed of any common DC motor rated up to 100V (5A). Operates on 5V to 15V. Uses NE556 to pulse-width modulate a high current switching power transistor, TIP122. In this way motor torque is maintained. Adjustable speed control.   
  • DC Motor Controller - controls small 2.5-7V motors, in pdf format, text in Finnish   
  • Digital Speed Control for RC car - DC motor PWM controller that takes the 1ms to 2ms pulse from the RC receiver and converts it into a pwm train at 1Khz   
  • Encoder and PC make complete motor-control system - This Design Idea combines a simple ISA-bus-resident interface circuit; a garden-variety PC; a high-resolution optical shaft encoder; and a PWM-controlled, 0.05-hp, brushed, permanent-magnet dc motor to make a high-precision and high-power motion-control system. This circuit is designed to drive a 48W (24V, 2A) motor. A different choice of MOSFET in the circuit would allow the system to handle even heavier loads. The quadrature-output, incremental optical shaft encoder that this Design Idea uses is popular in high-performance, bidirectional, rotation-sensing applications.   
  • Fan controller adapts to system temperature   
  • H-Bridge - This circuit drives small DC motors up to about 100 watts or 5 amps or 40 volts, whichever comes first. Using bigger parts could make it more powerful.   
  • H Bridge Motor control - general introduction to H bridges   
  • H bridge switch for small motors - simple switch circuit for reversing and stopping a motor without any control of speed   
  • H-Bridge Motor Driver - drives small DC motors up to about 100 watts or 5 amps or 40 volts   
  • MOSFET switch provides efficient ac/dc conversion - suitable circuit for DC motor powering from AC from transformer   
  • Motor controller operates without tachometer feedback - used back-EMF for motor speed controlling to make a voltage controlled motor speed controller   
  • Motor-control scheme yields four positions with two outputs - This article shows how to position a mechanical device into four discrete positions but with only two free outputs and one free input from the control system. This circuit is designed for 24V-dc up to 2.5A motor that comes with a worm gear.   
  • Motor controller uses fleapower - A simple, permanent-magnet dc motor is an essential element in a variety of products, such as toys, servo mechanisms, valve actuators, robots, and automotive electronics. In many of these applications, the motor must rotate in a given direction until the mechanism reaches the end of travel, at which point the motor must automatically stop. This circuit implements a low-cost, micropower, latching motor controller that uses current sensing rather than switches to stop the motor. The design is optimized for a supply voltage of 3 to 9V, making it well-suited to battery-powered applications.   
  • Nopeudens��din tuulettimelle - simle speed controller for PC fan, based on LM317, text in Finnish   
  • PCB Drill Controller - uses a Pulse-Width-Modulation technique with current feedback to keep the speed of cheap 12V PCB drills more constant   
  • PIC Based Speed Controller - This a a controller which controls a small DC motor to two directions at variable speed. The control signal for this circuit are normal RC servo control pulses.   
  • Position detectors provide motor-control logic - Optical sensors determine end of travel, and an SPDT switch selects to which end to send the load.   
  • Programmable source powers dc micromotors - a simple, economic, compact, and tricky way of using the LM723 as a programmable voltage source to drive dc micromotors which can can set the output to a value of 200 mV to 6V   
  • Pulse Width Modulation DC Motor Control - controls the motor speed by driving the motor with short pulses   
  • PWM Motor/Light Controller  12 or 24V pulse width modulator for light dimming or DC motor controlling   
  • PWM Motor/Light Controller by G. Forrest Cook   
  • PWM Motor/Light Controller Variations - diagrams are for 12V operation and there are high side (common ground) and low side (common +12V) versions   
  • PWM speed control - includes theory and some example circuits   
  • R/C Switch - This circuit is a so-called "Radio Controlled Electronic Switch". It can be used to switch on/off anything electrical, whatever it is. Here are a couple of examples: navigation lights, landing gear, sound systems, glowplug driver, bomb release, parachute, search lights, gyros, and so on. This circuits connects to a RC car controller servo output.   
  • Servo pulse to PWM converter - attemps to be an interface to convert pulses from R/C receiver to a dual PWM(Pulse Width Modulation) signal required by an H-bridge   
  • Simple PWM controller - 555 timer based PWM motor control project for electric fan or other DC motor   
  • Simple �C acts as dedicated motor control - PIC16C84 circuit accepts control words from an 8-bit digital bus and controls motor   

 back to : Links >> Electronic Circuits >> Electrical motor controlling circuits
 
 

Our Partners