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DC
Motor Driver with L6203: (electronic schematic added 11/06) |
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DC
Motor Driver with L6204: (electronic circuit added 10/06) |
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DC Motor Driver
with L6205: (electronic circuit added 10/06) |
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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 #2: 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 Reversing Circuit: Electronic circuit (added 9/04) |
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DC
motor speed controller: (circuit / design added 11/06) |
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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
Motor-Driver H-Bridge Circuit: (electronic circuit added 2/07) |
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DC Push Button Motor Control Circuit: (electronic schematic / circuit added 4/02) |
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DC Push Button Motor Control Circuit: (schematic / circuit added 2/07) |
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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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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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Digital Speed
Control: Digital Speed Control with aSwitching rate of 15KHz (circuit added 11/06) |
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Dimmer/Motor Speed Control: (electronic circuit added 7/03) |
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Discrete component motor direction controller: (electronic circuit added 10/05) |
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DMOS
3A, 55V, H-Bridge: National Semiconductor Application Note (app note added 6/06) |
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Driving a relay with a CPU: (circuit added 2/07) |
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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 (~mixos): (electronic circuit added 2/07) |
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Dual Channel Servo Pulse to H-Bridge Interface: (circuit / schematic design added7/06) |
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Dual DC Motor speed
controllers navigate robots: 02/05/2004 EDN-Design Ideas In low-noise analog circuits, a high-gain amplifier serves at the input to increase the SNR. The input signal
level determines the input-stage gain; low-level signals require the highest gain. It is also standard practice in low-noise analog-signal processing to make the circuit's bandwidth as narrow
as possible to pass only the useful input-signal spectrum. (added 10/05) |
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Dual Fan
Controller: 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: (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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Engine
Control Unit Schematics: (circuit / schematic design added 6/06) |
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Fan Controller Adapts to System Temperature: 09/25/97 EDN-Design Ideas / (added 2/03) 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 enough air to handle worst-case conditions. In many systems, the
fan can either be off or running slowly most of the time with no damage to the system. Keeping the fan off or running slowly benefits you by reducing ambient noise and possible fatigue,
irritated nerves, or even hearing damage. The circuit in Figure 1 adjusts a fan's speed according to temperature.... |
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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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Four Way
Switcher #2: (Electronic Schematic added 11/06) |
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Four Way
Switcher: (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.... (added 10/06) |
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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) |
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Grounding for Low-and-High-Frequency Circuits: AN-345 Analog Devices Application Note (app note added 2/06) |
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H Bridge Motor Control Circuits: (schematic / circuit added 2/07) |
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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. . (added 11/05) |
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H-Bridge Direct Current Motor Control Circuits: (electronic circuit added 7/03) |
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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) |
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H-Bridge shematic: (circuit added 2/07) |
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H-Bridge Switch
for Small Motors: simple switch circuit for reversing and stopping a motor without any control of speed (added 5/02) |
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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. (added
10/05) |
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Hot Water Tank Indicator: (diagram added 2/07) |
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Increasing the High
Speed Torque of Bipolar Stepper Motors: National Semiconductor Application Note (app note added 2/06) |
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Inexpensive Logic Controls Stepper Motor: 03/26/98 EDN-Design Ideas / (added 03/03) |
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Infrared Toy Car Motor Controller: (electronic Circuit / Schematic added 10/04) |
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Interfacing 5 Volt CMOS to 12 Volt loads: (electronic circuit added 4/05) |
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Interfacing Microchip’s Fan Speed Controllers to a SPI™: Microchip Application Note Published 12-Nov-02 (app
note added 2/06) |
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IRADK10 Motor Drive Reference Design Kit: The kit has a Graphical User Interface (GUI) that enables the user to control
motor speed and set the basic control parameters such as PWM frequency and shut down conditions via the serial link. (added 6/06) |
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Keys to Longer Life for CMOS: AN-349 Analog Devices Application Note (app note added 2/06) |
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LDR light/dark
activated relay switch: (diagram added 2/07) |
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Light activated relay: (diagram added 2/07) |
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Line Following Robot: This is a tiny line following robot which can run on the desk. (added 10/05) |
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Line-powered Xenon flash transmitter (PDF): (diagram added 2/07) |
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LTC1840: I2C Fan Control Ensures Continuous System Cooling: DN270 Design Notes (Linear Technology) (app note
added 1/06) |
