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Motor Control Circuits Page 1 Motor Controls: #-CD-LM-PQ-Z
Last Updated on:
Friday, August 29, 2008 02:33 PM
Circuits Designed by Dave Johnson, P.E. :
2 Pushbutton Motor Controller
Two small pushbutton switches, a few diodes and two relays form a method to control on/off power to a brush motor as well as the motor direction. The circuit was originally designed for a
motorized lifting platform.
555 Timer Forms Simple PWM Motor Controller Using a CMOS version of the 555 timer, this circuit can be used to control the speed of a motor by adjusting the duty cycle of the
pulses sent to the motor. (added 7/06)
Automatic DC Motor Brake
In many DC motor powered systems you would like the motor to quickly come to a full stop. This circuit provides an automatic electronic braking action to any DC motor ranging from 6v to
24v up to 1 amp of current. Some of the component values could be changed for larger motors....
Links to electronic circuits, electronic schematics, designs for engineers, hobbyists,
students & inventors:
1381-based Solar Engine: Voltage-Controlled Solar
Engine: Two simple solar engine designs using a 1381* voltage discriminator. (added 11/05)
230 Volt AC Motor Controller: controls speed
of230-Volt AC universal motor, in PDF format, text in Finnish (Electronic circuit added 5/02)
4-transistor H-bridge: an interesting 4-transistor H-bridge variant; this is cheap and easy to build, and best of all is
"smokeless" (i.e., no combination of inputs can cause bridge to self-destruct). (added 11/05)
555-based solar engine: Time-Controlled Solar Engine: a solar engine design using a 555 timer IC (added 11/05)
6-transistor H-bridge: This is six transistor "Tilden style" H-bridge; while not as old as original "basic H-bridge," this goes "way back," and is basis for many
BEAM driver circuits (added 11/05)
74*245-based motor driver: A simple, time-honored approach is to use one or more 74*245 chips (normally 74AC245 is used for maximum current capability) to provide motor drive
current. Here, each channel of drive power is provided by one or more buffer on chip. (added 11/05)
A
miniature high-rate speed control: A miniature high-rate speed control published in newsletter published by Electric Model Flyers' of Southwestern Ontario (diagram add
A
miniature low-rate speed control: A miniature low-rate speed control published in newsletter published by Electric Model Flyers' of Southwestern Ontario (diagram added 11/06)
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