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H-Bridge Circuits
Last Updated on:
Friday, February 05, 2010 10:05 AM
 

Circuits Designed by Dave Johnson, P.E. :
  • 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)

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
2"H" Bridge Direct Current Motor Control Circuit (LM311) - This page features H-Bridge circuits used for controlling direct current motors. Several designs are shown using both CMOS and Bi-Polar power devices.  These circuits could be used as the basis for Model Railroad DCC Boosters or PWM motor controllers. (resource added 05/08)
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 7/06)
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 7/06)
A better MOSFET H Bridge Schematic  - (schematic / circuit added 6/07)
A DMOS 3A, 55V, H-Bridge - National Semiconductor Application Note  (app note added 7/06)
A H-Bridge Design -  With a Protection against Having Two Positive Input Pulses....(circuit design added 12/08)

AN16 Automotive & Household Siren Driver Circuits: ZSD100 & Discrete 'H'-Bridge Minimum Parts Count Solution - Zetec Semiconductors  Applications Notes A solution is provided that uses a minimum number of components by utilising an application specific signal generation IC, and a high efficiency 'H'-bridge effected with 3A DC rated Super-δ TO92 style switching transistors.   (app note added 2/06)
AN-694: A DMOS 3A, 55V, H-Bridge: The LMD18200 - National Semiconductor Application Note  (app note added 2/06)
Better MOSFET H Bridge - (schematic / circuit added 6/07)
DC Motor-Driver H-Bridge Circuit - Physical motion of some form helps differentiate a robot from a computer. It would be nice if a motor could be attached directly to a chip that controlled the movement. But, most chips can't pass enough current or voltage to spin a motor. Also, motors tend to be electrically noisy (spikes) and can slam power back....(schematic added 03/04/05)
DMOS 3A, 55V, H-Bridge - National Semiconductor Application Note  (app note added 7/06)
Dual Channel Servo Pulse to H-Bridge Interface - (circuit / schematic design added 7/06)
Dual Channel Servo Pulse to H-Bridge Interface ~mixos - (electronic circuit added 3/07)
Four-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 the bridge to self-destruct).  (added 7/06)
Full-featured Dual H-bridge - I had always assumed that dynamic braking would be most effective at higher speeds. However, actual tests using a Faulhaber (micro mo) gearmotor showed that the brake would hold a motor almost stationary. These gearmotors are so well made that I can turn the 4 mm diameter shaft with light finger pressure. For the tests I had mounted a 90 mm diameter wheel, which gave me tremendous mechanical advantage. I found with the wheel mounted that I could barely turn the motor against the brake.   (added 7/06)
H-Bridge - drives DC motors forward and backward.   (added 7/06)
H-Bridge Design -  With a Protection against Having Two Positive Input Pulses....(circuit design added 12/08)
H-Bridge Direct Current Motor Control Circuits - (electronic circuit added 7/06)
H-Bridge information - This page features H-Bridge circuits used for controlling direct current motors. Several designs are shown…..(electronic design added 02/03/04)
H-Bridge Motor Control - general introduction to H-Bridges (added 5/02)
H-Bridge Motor Control ~rpaisley4 - (electronic circuit added 7/06)
H-Bridge Motor Control 4qdtec - general introduction to H-Bridges (added 7/06)
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)
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)
H-Bridge Power Amp - ...(spice design added 02/09)
H-Bridge Schematic - (circuit / schematic design added 7/06)
H-Bridge Switch for Small Motors - simple switch circuit for reversing and stopping a motor without any control of speed (added 7/06)
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) ….(designed by David A. Johnson)
MicroController drives H bridge to power a permanent magnet DC motor - 03/15/07 EDN-Design Ideas: Improved H-bridge requires only two driver signals.....(design idea added4/07)
MOSFET H Bridge - (schematic / circuit added 6/07)
MOSFET H-BRIDGE schematic & theory - (electronic circuit added 7/06)
Motor Control Scheme Yields Four Positions with Two Outputs - 05/07/02 EDN-Design Ideas: Figure 1 showshow to position a mechanical device into four discrete positions but with only two free outputs and one free input from the control system. The position depends on a set of cams and four corresponding limit switches. The 24V-dc motor comes with a worm gear. Darlington transistors.....(design idea added 7/06)
Reversing H-bridge - This H-bridge variant was one of the first in which the reversing circuitry is built into the driver, rather than (as is more-commonly done) into the control circuitry upstream of the driver. This is a handy circuit, though, for 2-motor walkers -as all that is required to reverse one is to reverse the phasing of one of the motors.  (added 7/06)
Sensor Electronic Tracker with H-Bridge Drive - (electronic circuit added 7/06)
Servo Pulse to Dual H-Bridge - interface performs vital control functions needed for propulsion and steering of a “fighting robot”.   (added 7/06)
Servo Pulse to PWM - converter connects an H-Bridge to radio control receivers or robotic circuits. (added 7/06)
Six-transistor H-bridge - This is the six transistor "Tilden style" H-bridge; while not as old as the original "basic H-bridge," this goes "way back," and is the basis for many BEAM driver circuits (added 7/06)
Zoelen Bridge Z-Bridge - A Cheaper H-Bridge Design the Zoelen Bridge (Z-Bridge)  (added 7/06)

 
 
 
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