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Motor Control Circuits
Motor Controls:  #'s - D       E - M       N - S        T - Z

 
 

Last Updated: November 30, 2017 10:29 AM

Circuits Designed by Dave Johnson, P.E. :

H Bridge Motor Controller uses Low Power - This circuit uses a few logic gates & a 74AC240 to control power to a small gear motor . . . Hobby Circuit designed by David A. Johnson P.E.-July, 2005


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

G Strain energy absorber -  It is important to know that transistors Q1,Q2,Q3 must not work like an astable  (tri-phase) multivibrator  (you could verify it on scope  (no square waves but NON LINEAR wave between XB, YB, ZB must be displayed on the scope) . __ Designed by Jean-Louis Naudin

Gate Boost Solar Engine -  Voltage-Controlled Solar Engine: The "Gate Boost Solar Engine" is a new  (6/2002) Wilf Rigter 1381-based design.  This uses an internal voltage doubler to turn on a FET more efficiently.   __ Designed by Wilf Rigter

Generate Fan-Speed Control -  03/21/02  EDN-Design Ideas - Fan noise is becoming a significant issue as electronic equipment increasingly enters the office and the home.  Noise is proportional to fan speed, and the airflow¡ªhence, fan speed¡ªnecessary for cooling is less at low ambient temp __ Circuit Design by Jim Christensen, Maxim Integrated Products, Sunnyvale, CA

GSM SMS javljalnik ALSMS-01 (page in slovenian)SMS remote control project -  ALSMS-detector 01 is a device intended for remote control of installations, remote management of electrical devices, has answered states and providing information via SMS to one or more mobile GSM terminals via the GSM network.  In the first line has been developed for the control of individual residential or holiday accommodation, which the majority of the time deserted managed. __ Designed by Aleksander Stare

H Bridge Motor control -  Before trying to understand a full bridge circuit, you may care to read up on PWM controllers, which page also describes how a half-bridge circuit works.  Most full bridge motor controllers also use pwm! Designing a full-bridge PWM circuit that is reliable and 'user-proof' is actually quite difficult! 4QD released our first such controller in 1992: it was probably not the first but was certainly early in the race. __ Designed by Richard Torrens

H Bridge Motor Controller uses Low Power -  This circuit uses a few logic gates & a 74AC240 to control power to a small gear motor . . . Hobby Circuit designed by David A. Johnson P.E.-July, 2005

Happy Birthday Singer solar engine -  Time-Controlled Solar Engine: The original Type 2 Solar Engine was based around the "Happy Birthday Singer"  (HBS) chip that was pulled from the original Hallmark singing greeting cards.   __ Designed by Wilf Rigter

H-Bridge -  This circuit drives a motor clockwise / anticlockwise via a 10k to 100k pot.  __ 555-Timer

H-Bridge -  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 __ Designed by Bob Blick

H-Bridge -  With a Protection against Having Two Positive Input Pulses.   __ Designed by G.L. Chemelec

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 __ Designed by Bob Blick

H-Bridge Motor Driver -  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 __ Contact: David Cook

H-Bridge Motor Driver using Bipolar Transistors -  The classic beginner’s DC motor driver circuit that appears in every electronics textbook is the bipolar transistor H-bridge.   An H-bridge is an arrangement of transistors that allows a circuit full control over a standard electric DC motor.  That is, an H-bridge allows a microcontroller, logic chip, or remote control to electronically command the motor to go forward, reverse, brake, and coast. __ Contact: David Cook

H-Bridge Schematic -   (spice design) 

H-Bridge Switch for Small Motors -  Here's a simple switch circuit for reversing and stopping a motor without any control of speed. __ Designed by Richard Torrens

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] __ Designed by Chuck McManis

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.  __ 555-Timer

HC11 Controls the Stepper -  Simple circuit with 16-pin Nitron chip 68HC908, easy analog setting, source code with ICC08.  New s-record for 8-pin 68HC908QT2! __ Designed by Ludwig Orgler-Fachingenieur Elektrotechnik

Heater Fan Controller -  This device acts as a variable speed control for the heater blower in a car.  It takes its power directly from the existing wiring and connects with just 2 wires.  It will also work for any 12 volt device up to 10 amps __ Designed by Luhan Monat-Mesa Arizona

High Accuracy RPM-Measurement with 68HC12 -  Schematic + code __ Designed by Ludwig Orgler-Fachingenieur Elektrotechnik

High current bipolar stepper Motor controller -  High Current Bipolar Stepper Motor Controller kit is based on chopper drive.  Chopper drive is a method of providing a constant current source to a device.  Chopper drive allows for use of higher voltage power supply for better performance and higher speed.  It is uses SGS Thomson's L297 and L298 controller IC's. __ Designed by Rajkumar Sharma

High Current Power Supply -  Since my page was first posted, I have received a number of emails asking about a high current power supply.  I looked around, but couldn't find one that was suitable.  So, I designed this.  It is a linear supply, which might have a few of you rolling your eyes, but it takes very few parts, is simple to build and can supply huge currents __ Designed by Aaron Cake

High current PWM controller based around a 555 timer -  Newly Revise Design NOW for Either N or P Channel Mos-Fet's __ Designed by G.L. Chemelec

High current regulated power supply -  The high current regulator below uses an additional winding or a separate transformer to supply power for the LM317 regulator so that the pass transistors can operate closer to saturation and improve efficiency.  For good efficiency the voltage at the collectors of the two parallel 2N3055 pass transistors should be close to the output voltage.  The LM317 requires a couple extra volts on the input side, plus the emitter/base drop of the 3055s, plus whatever is lost across the  (0.1ohm) equalizing resistors  (1volt at 10 amps) , so a separate transformer and rectifier/filter circuit is used that is a few volts higher than the output voltage __ Designed by Bill Bowden

High side PWM Motor/Light Controller -  The diagrams are for 12V operation only and there are high side    (common ground) and low side    (common +12V) versions.  The low side version of the circuit uses an N Channel FET, the high side version of the circuit uses a P Channel FET.  N Channel devices tend to handle more current than P Channel devices, they are also less expensive.  The high side version of the circuit is useful when one side of the load has to be grounded __ Designed by G. Forrest Cook

High Voltage High Current Power Supply -  A while ago I came up with the idea of using a microwave transformer as a high voltage, high current power supply.  Even though I had no use for such a supply, I decided to design one anyway.  This is a very simple design.  Note: I have not built this supply becasue I have no use for it.  If you build this supply without knowledge in electronics or high voltage, you have basically signed your own death certificate.  This supply can be very dangerous if not treated properly __ Designed by Aaron Cake

High-Power Reversible DC Motor Speed Controller -  This reversible DC motor speed controller uses a switchmode MOSFET bridge circuit that drives the motor.  It can be controlled by a 1-2ms pulse train from a radio control system or by a single potentiometer to give forward/reverse throttle control.  It can operate from 12V or 24V batteries at currents up to 20A with just four MOSFETs in the bridge circuit.__ SiliconChip

High-Power Reversible DC Motor Speed Controller -  Here's a 12-32V 30A speed controller that's easy to build.  It's available in two versions ? reversible and non-reversible ? and features soft start, relay switching of motor direction and PWM speed control.__ SiliconChip

High-Rate Electronic Speed Control with BEC & Brake -  This electronic speed control  (ESC) for brushed motors combines the features of two of my earlier designs.  One was a high-rate 30A ESC with a brake, and the other a high-rate 12A ESC with a BEC  (receiver battery eliminator circuit) .   __ Designed by Stefan Vorketter

Home Built Laser Projector -  Laser projector is one of the laser display equipments.  This project builds the closed-loop galvos mainly and aiming at professional grade.   __ Designed by The Electronic Lives Manufacturing-presented Chan

Homemade Water Drain Pump controller -  A hole needs to be digged at the lowest place in the celler that have water incoming problems.  The hole is about 0.5 x 0.5 x 0.5 meter, at the bottom a large water pump is mounted.  Then the different water levels was measured, so we know how to make the sensors.   __ Designed by Thomas Scherrer OZ2CPU

Hot Water Tank Indicator -  The idea for this project may have come to me in a flash of inspiration, and its a very simple way to check if a fuse has blown without removing it from its holder __ Designed by Andy Collison

How to Make a PWM without a Microcontroller -  Pulse-width modulation is a digital technique for varying the amount of power delivered to an electronic component.  By adjusting the amount of power delivered to a motor or LED, the speed or brightness  (respectively) can be controlled. __ Contact: David Cook

How to record telephone conversations -  Sometimes it is useful to record telephone conversations.  The easiest way is to go to a shop and buy a telephone conversation recording adapter which is connected between telephone line and the tape recorder.  Those recording adapters are usually connected between telephone line and the telephone, but there are also other type available __ Designed by Tomi Engdahl

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Motor Controls:  #'s - D       E - M       N - S        T - Z


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