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DC Motor Control using a Single Switch - (electronic Circuit / Schematic added
10/04) |
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DC Motor Controller (jcmiras.net) - This DC Motor Controller circuit will control
a 12V dc motor. The system will have three pushbuttons: a START button, a REVERSE
button and a STOP button. Initially, the motor must not be running. When the START
button is pressed, the motor will run in one direction. (added (07/05) |
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[_OLD-ads-dont_upload/OLD I-ADS from web/ad-djandassoc.htm] |
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DC Motor Driver with L6203 - The L6203 is a DMOS full bridge driver, which can
handle the high peak current up to 5A and supply voltage up to 48V with RDS (ON) of
just 0.3 ohm. The chip can run the motor at 4A continuous with proper heat
sinking…..(electronic schematic added 11/06) |
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DC Motor Model - Although SPICE does not provide explicit models for
electro-mechanical devices, like a DC motor, creating one is fairly straightforward.
You just need to remember that most physical behaviors, whether mechanical or
electrical, can be described by a set of equations. So for a desired ...(spice design
added 02/09) |
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DC Motor Pulse Width Modulation Speed Control - This is a circuit for controlling
the speed of small DC motors, it works nicely as a speed controller for an HO or N
gauge model railroad. (electronic diagram added 11/06) |
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DC Motor Reversing Circuit (Andy Collinson) - A DC motor reversing circuit using
non latching push button switches. Relays control forward, stop and reverse action,
and the motor cannot be switched from forward to reverse unless the stop switch is
pressed first. (added 4/02) |
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DC Motor speed Controller - Scroll down to find link to circuit drawing and
circuit explanation….(electronic schematic added 09/06) |
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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) |
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DC Motor-Driver H-Bridge Circuit circuitdb - Physical motion of some form helps
differentiate a .... (added 2/07)t 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... |
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DC Push Button Motor Control (Andy Collinson) - This circuit uses solid state
switching (transistors) to control direction of a DC motor. You have precise control
of the movement of the motor, and an indication of direction provided by
LED's…..(schematic / circuit added 2/07) |
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DC servo Motor driver - ….(circuit design added 08/08) |
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DC Servomotor Controller - An experiment on the DC servomotor control system. It
is controlled with only an AVR. (added 10/05) |
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Delayed shutter control for Kodak DC-20 - (circuit added 1/07) |
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Desktop Power Supply - (application / block diagram added 6/07) |
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Desktop Power Supply Clone Market - (application / block diagram added 6/07) |
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Digital Speed Control - Digital Speed Control with aSwitching rate of 15KHz
(circuit added 11/06) |
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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 (added 5/02) |
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Digital Speed Control with Reverse - (Schematic added 11/06) |
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Dimmer/Motor Speed Control - Lamp dimmers using traics can be quite simple,
nothing more than a potentiometer, resistor, capacitor and triac with a built-in diac.
(See Teccor's application note for examples and other technical data.) The circuit
below is similar....(electronic circuit added 7/03) |
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DMOS 3A, 55V, H-Bridge - National Semiconductor Application Note (app note
added 6/06) |
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Dremel Speed - The circuit at right uses a logi-level N-channel FET driven
directly by the PIC. The PIC creates a variable PWM signal to power the
motor. Motor current is sensed using a combined 0.5 ohm resitance to ground.
Since this ….(circuit design added 08/08) |
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Driving a relay with a CPU - ASCII format (circuit added 2/07) |
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Driving Bipolar Stepper Motors - The permanent magnet rotor has the same number
of pole pairs as the stator coil section. Interaction between the rotor and stator
(opposite poles attracting and like poles repelling) causes the rotor to move ¼ of a
pole pitch per winding polarity change. Motors are available in either 2 coil
(bipolar) or 4 coil (unipolar) windings. In the unipolar ….(design added 11/08) |
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DS1821 programmable thermostat - (diagram added 2/07) |
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DSSSE: Dual Slope-Sampling Solar Engine - Voltage-Controlled Solar Engine: The
dual slope sensing SE is another Wilf Rigter design; this SE is optimized for 'bots
with a low-power standby mode. (added 11/05) |
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Dual Channel Servo Pulse to H-Bridge Interface - (circuit / schematic design added
7/06) |
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Dual Channel Servo Pulse to H-Bridge Interface ~mixos - (electronic circuit added
2/07) |
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Dual DC Motor Speed Controllers Navigate Robots - 03/29/01 EDN-Design Ideas: /
Mobile robots need simple and lightweight dc-motor-speed-control hardware that can
work with low-power batteries. Flip-flop type navigation systems allow only one motor
to operate at a time while the other motor remains off. Navigation direction changes
alternatively even when the robot has to navigate through a straight path.
Line-tracker robots are of this type. (added 6/06) |
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Dual Fan Controller - Each fan turns off when the temperature drops 5 degrees
below its turn-on temperature. For example, if the dial is set to 80 degrees, the fan
turns on at 80 degrees and turns off at 75 degrees. This prevents the fan from cycling
on and off rapidly, which would occur if the fan turned on at 80, started to cool the
cabinet, and then immediately turned off at 79. ….(design added 11/08) |
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Dual Fan Controller (David Cook) - A birthday present gone too far. An
overengineered temperature-based automatic twin fan controller with brass face to keep
a kitchen PC cool. (project added 11/06) |
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Dual Slope-Sampling Solar Engine - Voltage-Controlled Solar Engine: The dual slope
sensing SE is another Wilf Rigter design; this SE is optimized for 'bots with a
low-power standby mode. (added 11/05) |
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Dual Stepping Motor Drivers using UDN2540 - In this design we use two UDN2540B to
drive two stepping motors at the same speed. Each motor can be independently
controlled. The S1, S2 switches control the ON/OFF and the moving direction of Motor1.
The S3, S4 control the Motor2, respectively....(electronic circuit added 4/05) |
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Eight Way Switcher - (Schematic / Circuit added 11/06) |
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Electronic Motor Starter - (electronic Circuit / Schematic added 10/04) |
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Encoder & PC Make Complete Motor Control System - 12/12/02 EDN-Design Ideas: This
Design Idea combines a simple ISA-bus-resident interface circuit; a garden-variety PC;
a high-resolution optical shaft encoder; and a PWM-controlled, 0.05-hp, brushed,
permanent-magnet dc motor to make a high-precision and high-power motion-control
system. The system sequences the precise rotation of an evacuated steel bell
jar.....(design idea added 1/05) |
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Engine Control Unit Schematics - (circuit / schematic design added 6/06) |
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Fan control - As we begin to enjoy those lazy hazy days of summer, the most
important thing on most of our minds is how to keep cool during those hot days. For
some of us that means turning up the old air conditioner and sipping on a nice cold
glass of our favorite soft drink. However, we often forget about an equally
important.... (electronic design added 6/07) |
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Fan Controller Adapts to System Temperature - 09/25/97 EDN-Design Ideas: Any piece
of electronic equipment--whether it be a lab instrument, an audio amplifier, or a
PC--that relies on a cooling fan to control internal temperature is a potential source
of noise pollution or even hearing damage. Most of the time, the fan's noise level is
probably much higher than necessary, because it has enough capacity to
move.....(design idea added 2/03) |
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Fan timer based on Motorola 68HC908QT2 - (electronic circuit added 4/05) |
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Flashing LED-based Solar Engine - Voltage-Controlled Solar Engine: This design
uses a flashing LED to determine the solar engine's voltage trip level. (added
11/05) |
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Fly-back Converter - (application / block diagram added 6/07) |
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Four Way Switcher - (Schematic added 11/06) |
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Four Way Switcher #2 - (Electronic Schematic added 11/06) |
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Four-Speed Fan Control using Simple Remote Diode Temperature Sensor - National
Semiconductor Application Note (app note added 2/06) |
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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 11/05) |
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Frequency switch - (diagram added 2/07) |
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Fridge Saver - This circuit waits 5 minutes before re-applying the power to a
refrigerator to prevent it from having to start up under pressure after a brief power
outage. This is highly stressful for the compressor and the thermal cut-out switch
built into the compressor. This device prevents frequent brief power
interruptions....[Designed by Andrew R. Morris (added 10/06)] |
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Frost Alarm (Andy Collinson) - The thermistor used has a resistance of 15k at 25
degrees and 45k at 0 degrees celsius. A suitable bead type thermistor is found in the
Maplin catalogue. The 100k pot allows this circuit to trigger over a wide range of
temperatures. A slight amount of hysteresis is provided by inclusion of the 270k
resistor. This prevents relay chatter when temperature is near the switching threshold
of this circuit. (added 2/06) |
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Full Bridge Converter - (application / block diagram added 6/07) |
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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 11/05) |
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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. (added 11/05) |
