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H-Bridge Circuits, Page 2
H-Bridge:  # - C        D - F       H         G - Z
Last Updated on:
Wednesday, June 02, 2021 05:08 AM
 

Designed by Dave Johnson, P.E. :
  • 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.
  • 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 and designs for engineers, hobbyists, students & inventors:
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..... [David Cook]
DCC Booster Circuit #2 (LMD 18200) -  The second schematic is for a 3 Amp - DCC Booster with automatic shutdowns for DCC signal failure and high current loads.  This circuit also uses the LMD 18200 CMOS, H-Bridge….  This page features H-Bridge circuits used for controlling direct current motors - scroll to find this one…. [from Rob Paisley's Model Train web site]
 
Dual Channel Servo Pulse to H-Bridge Interface - This feature-packed circuit connects two channels of a radio control receiver to two H-Bridges for use in a “fighting robot”. In the above right picture it is near the center, connected to the radio receiver. The H-Bridge circuit boards are at the far left and right, near each wheel. The motors are 18 volt electric drills with nicad battery packs....Bob Blick

 

H-Bridge:  # - C        D - F       H         G - Z


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