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H-Bridge Circuits,
Page 3
H-Bridge: # - C
D - F
H
I - Z
Last Updated on:
Wednesday, June 02, 2021 05:08 AM
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Designed by Dave Johnson, P.E. : |
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Alternating CW & CCW Motor Driver
A while back a company needed a motor controller for a custom door latching system.
The system used a small brush motor with a speed reduction gear to both latch and
unlatch the door. When pulsed for about 250ms in the clockwise direction, the
motor would unlatch the door. When spun in the opposite direction for 250ms,
it would latch the door. The circuit below performs this function. A single
low power pushbutton is used to alternate between the two directions. The
circuit is powered by 4.5v using a battery made from three alkaline AA cells.
The motor draws about 250ma. The battery should provide many years of service.
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- Low
Voltage H-bridge
TTL type Q and inverted Q inputs control a classic H-bridge circuit, rated at 50
volts and about 10 amps. The circuit can control power and direction of a DC
motor. (added 7/06)
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Links to electronic circuits, electronic schematics and designs for engineers, hobbyists, students & inventors:
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H Bridge Motor Control Circuits - This page features H-Bridge
circuits used for controlling direct current motors. Several designs are
shown using both CMOS and Bi-Polar power devices….scroll to view all of
the circuits…. [from Rob Paisley's Model Train web site] |
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H-Bridge - This circuit drives a motor clockwise / anticlockwise
via a 10k to 100k pot. |
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H-Bridge - drives DC motors forward and backward.
(added 7/06) |
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H-Bridge Design - With a Protection against Having Two Positive
Input Pulses.....(Circuit design added 12/08) |
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H-Bridge Direct Current Motor Control Circuits - This page
features H-Bridge circuits used for controlling direct current motors.
Several designs are shown using both CMOS and Bi-Polar power
devices….scroll to view all of the circuits…. [from Rob Paisley's Model
Train web site] |
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H-Bridge Motor Control - general introduction to H-Bridges
(added 5/02) |
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H-Bridge Motor Control 4qdtec - general introduction to
H-Bridges (added 7/06) |
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H-Bridge Motor Controller 5 amps 100 Watts - 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. Using a real H-bridge IC makes sense for
this size of motor, but hobbyists love to do it themselves, and I thought it was about
time to show a tested H-bridge motor driver that didn't use exotic parts.....(added
4/05) |
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H-Bridge Motor Driver - A wiring diagram, photograph, and movie of an
H-bridge dc motor driver circuit implemented with a TC4424A, TC4427A, or MAX4427 dual
MOSFET driver IC. Very useful for running small bot gear motors. (project added
10/06) |
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H-Bridge Power Amp - .....(spice design added 02/09) |
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H-Bridge Switch for Small Motors - simple switch circuit for reversing and
stopping a motor without any control of speed (added 7/06) |
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H-BRIDGE Theory & Practice - A number of web sites talk about H-bridges,
they are a topic of great discussion in robotics clubs and they are the bane of many
robotics hobbyists. I periodically chime in on discussions about them, and while not
an expert by a long shot I've built a few over the years. Further, they were one of my
personal stumbling blocks when I was first getting into robotics.....[Chuck McManis]
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H-Bridge with PWM - This circuit drives a motor clockwise / anticlockwise
via a pot and reduces the speed to zero when the pot is in mid-position. The current
is limited to 200mA and the voltage across the motor is less than 6v, but the circuit
shows the principle of Pulse Width Modulation (providing powerful bursts of current to
the motor to create a high or low RPM under load) and both forward / reverse RPM via
the H-bridge arrangement. |
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H-Bridge:
# - C
D - F H
I - Z |
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