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12 Volt or 24 Volt DC Pulse Width Modulator: :
This circuit can be used as a light dimmer or DC
motor speed controller. |
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12 Volt Sump Pump Control: |
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220 Volt Motor Speed Control: can be used for
controlling the RPM of a ball mill and star rolling
machine motors, or electric drills
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230 Volt AC Motor Controller: controls speed
of230-Volt AC universal motor, in PDF format, text
in Finnish |
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68HC11 Stepper Motor Control:
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AC Motor Driver Features PC Programmability :
08/05/02 Electronic Design - Ideas for Design / A
simple PC-programmable ac motor driver is easily
implemented using one FIFO, simple logic, and power
drivers. Figure 1 shows the basic block diagram of
the circuit. It generates three sinusoidal
voltage... |
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AC Motor Speed Controller: |
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AT89C2051 / 4051Stepper Motor Interface:
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Boost Converter Controls 12 Volt Fan From 5 Volt
Supply: 12/12/97 EDN-Design Ideas /
Temperature-controlled PWM boost converter allows
operation of a12V brushless dc fan from a5V supply
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Circuit Controls Isolated 12 Volt Stepper Motor:
09/26/96 EDN-Design Ideas / Allows full direction
and step control of a12V, four-phase stepper motor
from a5V, TTL/CMOS-compatible logic controller
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Circuit Controls Slew for Stepper Drive:
08/19/99 EDN-Design Ideas / Slewing control
for stepper motors that you use in sophisticated
applications, such as monochromator movements in
optical experiments
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Circuit Forms DC Motor Switch With Brake:
01/10/02 EDN-Design Ideas / Controlling a small dc
motor without speed control sounds like a trivial
task; a switch or a relay should suffice. However,
several problems accompany this approach.
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Circuit Generates Analog Fan Speed Control:
Maxim-IC Appnote #1125 / This circuit delivers
a continuous and linear fan-control voltage that is
proportional to temperature. |
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Circuit generates fan speed control: 03/21/2002
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 hence,
fan speed necessary for cooling is less at low
ambient temperatures. Because ambient temperature is
lower than the upper design point most of the time,
a fan can run slower, making it easier on the ears. |
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Circuit generates fan speed control: 03/21/2002
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 hence,
fan speed necessary for cooling is less at low
ambient temperatures. Because ambient temperature is
lower than the upper design point most of the time,
a fan can run slower, making it easier on the ears. |
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Circuit protects system from overheating:
11/08/2001 EDN - Design Ideas / The two-chip circuit
in Figure 1 provides fan control and overtemperature
warning and shutdown signals to protect systems from
excessive heat. The circuit monitors the temperature
of the pc board and the die temperature of a CPU, an
FPGA, or another IC with an on-chip
temperature-sensing transistor. . |
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Circuit provides bidirectional, variable speed motor
control: 05/16/2002 EDN - Design Ideas / During
the development of systems that include small
motors, a simple, bidirectional motor controller
with speed adjustment may be helpful. Figure 1 shows
such a controller. The circuit uses everyday
components whose tolerances and ratings are
unimportant as long as they sustain the required
voltage, current, and power.. |
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Circuit provides Class D motor control:
05/01/03 EDN-Design Ideas / Class D audio
amplifiers provide a dual benefit for
battery-powered portable devices. They enhance
battery life, and they produce much less power
dissipation than do their linear cousins. Those
features make Class D amplifiers ideal candidates
for controlling speed and direction in small
electric motors.... |
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Computer Controller for DC Motors: This circuit
is easy to build and use and it can control two DC
motors of any current or voltage rating, depending
on the rating of the relays. The circuit also
provides two shaft encoders for positional feedback
to the computer. |
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DC Motor Reversing Circuit: |
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DC Push Button Motor Control Circuit:
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Digital Speed Control for RC Car: DC motor PWM
controller that takes the1ms to2ms pulse from the RC
receiver and converts it into a PWM train at1Khz
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Dimmer/ Motor Speed Control:
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DIY Wavemaker: controls two electric water pumps
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Fan Controller Adapts to System Temperature:
09/25/97 EDN-Design Ideas / The circuit
adjusts a fans speed according to temperature. |
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H Bridge Direct Current Motor Control Circuits:
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H Bridge Motor Control: general introduction to
H bridges |
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H Bridge Switch for Small Motors: simple switch
circuit for reversing and stopping a motor without
any control of speed |
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increasing the High Speed Torque of BiPolar Stepper
Motors: National Semiconductor Application
Notes,05-Aug-1995 |
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Inexpensive Logic Controls Stepper Motor:
03/26/98 EDN-Design Ideas |
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Infrared Toy Car Motor Controller:
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Load Measurement On DC Motor Needs No Sensing
Transformer : 04/15/02 Electronic Design - Ideas
for Design / When absolute precision isn't an issue,
engineers can select PWM control and back-EMF (BEMF)
sensing for a dc motor's speed control. The motor
must also be protected from overload. Typical
solutions use a current-sensing transformer, or
sensing... |
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Low Voltage DC Motor Speed Controller:
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Make a Simple Ramp Generator for Stepper Motors :
04/04/02 EDN-Design Ideas / Stepper motors are
synchronous motors that step at the pulse rate of
the driving signal. For the motor to move quickly,
the stepping rate must be fast.
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Make a simple ramp generator for stepper motors:
04/04/2002 EDN - Design Ideas / Stepper motors are
synchronous motors that step at the pulse rate of
the driving signal. For the motor to move quickly,
the stepping rate must be fast. However, because of
motor and load inertia, the motor often cannot go
from 0 rpm to the desired number of revolutions per
minute in one step. Therefore, most stepper motors
receive their drive from a pulse chain that starts
out slowly and ... . |
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Mini Drill Variable Power Supply:
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MOSFET switch provides efficient AC / DC conversion:
02/17/00 EDN-Design Ideas |
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Motor control scheme yields four positions with two
outputs: 02/07/2002 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 Q3 to Q6
and resistors R7 to R12 form an H-bridge that drives
the dc motor, M. |
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Motor Controller operates Without Tachometer
Feedback: 12/09/99 EDN-Design Ideas / PDF
contains multiple circuits - scroll to find the one
of interest / This circuit uses a back-EMF for motor
speed controlling to make a voltage controlled motor
speed controller
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Motor controller uses fleapower : 09/25/03 EDN-Design
Ideas / A simple, permanent-magnet dc motor is an
essential element in a variety of products, such as
toys, servo mechanisms, valve actuators, robots, and
automotive electronics. In many of these
applications, the motor must rotate in a given
direction until the mechanism reaches the end of
travel, at which point the motor must automatically
stop... |
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MOTOR DIRECTION CONTROLLER: This circuit can
control a small DC motor, like the one in a tape
recorder. |
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Motor Speed Control: allows you to control the
speed of an AC motor, for example an electric drill,
designed for115-Volt AC |
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OptoCoupled Gate Detects Motor Operation:
02/02/98 EDN-Design Ideas |
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PCB Drill Controller: The speed controller in
this article overcomes this problem by raising the
voltage to the drill as the load is increased. The
unit uses a basic Pulse Width Modulation (PWM)
regulator to reduce the power dissipation.
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Position Detectors Provide Motorcontrol Logic:
05/24/01 EDN-Design Ideas / PDF contains multiple
circuits - scroll to find this circuit.
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Power Line Appliance Controller:
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Programmable Source Powers DC MicroMotors:
03/01/01 EDN-Design Ideas / PDF contains multiple
circuits - scroll to find the one of interest / A
simple, economic, compact, and tricky way of using
the LM723 as a programmable voltage source to drive
dc micromotors which can set the output to a value
of200 mV to 6V |
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Pulse Width Modulation DC Motor Control:
controls the motor speed by driving the motor with
short pulses |
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PWM Controller: 555 Timer based PWM motor
control project for electric fan or other DC motor
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PWM DC Motor Speed Control: |
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PWM Motor / Light Controller Variations:
diagrams are for12V operation and there are high
side (common ground) and low side (common +12V)
versions |
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PWM Speed Control: includes theory and some
example circuits |
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Rotary Controller Positions Stepping Motor:
08/03/95 EDN-Design Ideas |
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Serial Servo Motor Controller: |
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Simple Emergency Sump Pump Control: Sump Pump
Control for12V DC Bilge Pump |
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SIMPLE STEPPER MOTOR CONTROLLER: This circuit
can be used to control a unipolar stepper motor,
which has four coils |
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SN754410 Dual Motor Driver Board:
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Speed Control Handles Isolated –48 Volt Fans :
08/05/02 Electronic Design - Ideas for Design /
Chips are available to monitor and control
ventilation fans. But less common are fan
controllers for telecom applications. Such fans must
operate in electrically isolated environments with a
supply voltage in the 36- to 72-V range. For
example, the... |
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Stepper Motor Controller #1:
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Stepper Motor Controller #2: Uses the CPLD and
8031 microcontroller on the XS95 Board to control
the rotational speed and direction of a stepper
motor. (This project is in Spanish.)
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Stepper Motor Driver : 74194 Inexpensive stepper
motor driver that could be used to power slow speed
projects on the layout or other Tutorials applications
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Stepper Motor Experiment: |
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Stepper Motor Positioner: |
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System monitors multiple temperatures, controls fan
speed: 10/12/00 EDN-Design Ideas
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Temperature Controlled NiCad Charger:
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Temperature Regulator: |
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Thermo Cooling Fan: fan controller, which controls fan based on temperature
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Three Phase Motor Driver Prevents Stalls:
01/05/95 EDN-Design Ideas |
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Two Components Drive Stepper Motor: 01/19/95 EDN-Design
Ideas |
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Using a Light Dimmer IC for AC Motor Speed Control:
This circuit example uses LS7231 Light Dimmer IC
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Variations on the PWM DC Motor Speed Control:
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