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Motor Control
Circuits Page 1 Motor Controls: #-CD-LM-PQ-Z Last Updated on:
Saturday, June 27, 2009 04:43 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)
