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Apex-AN24 Brush Type DC Motor Drive - 2/1998, AN24UREVB : 133 Kb (Apex App
Note added 08/08/08) |
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Assorted relay control circuits - several circuits here, spend some time and
view each of them |
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AT89C2051/4051Stepper Motor Interface - (electronic schematic / circuit
added 602) |
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[_OLD-ads-dont_upload/OLD I-ADS from web/ad-djandassoc.htm] |
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Audio amp makes efficient fan controller - 11/09/00 EDN-Design Ideas....You
can use discrete transistors to vary power to a fan to control its speed. However,
with a simple modification, you can use an audio-amplifier IC to control a fan module
(Figure 1). The LM4872
.PDF contains multiple circuits, scroll to find the one of
interest....[Design Idea by Wallace Ly, National Semiconductor Corp, Santa Clara, CA] |
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Auto Heat Limiter for Soldering Iron -
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now] |
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Automatic DC Motor Brake - In many DC motor powered systems you would like
the motor to quickly come to a full stop. This circuit provides an automatic
electronic braking action to any DC motor ranging from 6v to 24v up to 1 amp of
current. Some of the component values could be changed for larger
motors....[Hobby Corner Circuit by Dave Johnson] |
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Automatic Fan Controller -
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Automatic Speed Controller for fans & Coolers - During summer nights,
temperature is initially quite high. As time passes, temperature starts
dropping. Also, after a person falls asleep, metabolic rate of ones body
decreases. Thus, initially fan/cooler needs to be run at full speed. As time
passes, one has to get up again and again to adjust speed of fan or .
(added 10/05) |
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Autonomous Fan Control for Processor Systems using the LM85 - National
Semiconductor Application Note (app note added 2/06) |
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Auxiliary Power Supply & Wall-Plug Adaptor - (application / block diagram
added 6/07) |
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Avoiding Passive-Component Pitfalls - AN-348 Analog Devices Application Note
(app note added 2/06) |
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AVR microcontroller makes improved motor-controller - 17-Oct-02 Issue of EDN
The circuit in Figure 1 provides a novel method of reading the pulse train using an
Atmel (www.atmel.com] AVR processor, from a typical radio-controlled receiver, and to
determine the velocity of a motor. To capture the pulse train from a typical receiver,
you need an external interrupt that triggers based on a rising and a falling
edge....[Design Idea by Anthony Di Tommaso, Cranberry Township, PA, and George
Simonoff, Petersburg, OH] |
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