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Last Updated:
10/03/2011 06:07:31 PM |
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Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
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Circuit delivers dimming control for white LED driver - 28-Oct-04
Issue of EDN The demand for power in color cell-phone handsets is
constantly increasing. New applications steadily emerge, making it
imperative to reduce power consumption in the design. Examination of usage
data shows.... [Design Idea by Wallace Ly, National Semiconductor, Santa
Clara, CA] |
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Circuit forms simple, low-cost, 1-kV driver - 13-May-04 Issue of EDN
High-voltage drivers have recently received much attention, because they
play an important role in driving piezoelectric and electro-optical
components, for example. Figure 1 shows a simple, low-cost, 1-kV
driver...... [Design Idea by Tai-Shan Liao and Prasit Champa, National
Science Council, Hsinchu, Taiwan] |
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Circuit makes universal VCSEL driver - 10-Jul-03 Issue of EDN VCSELs
(vertical-cavity surface-emitting lasers] are commercially available
infrared semiconductor lasers with λ≅850 nm. Short-cavity-length,
high-quality Bragg mirrors impart properties to VCSELs that differ from
those that earlier Fabrey-Perot lasers impart. The emission
characteristics—optical power, Pλ, versus diode current—shows threshold
and operating currents..... [Design Idea by Andrzej Wolczko, Institute of
Electronics AGH, Krakow, Poland] |
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Circuit Thermally Compensates LCD Contrast Bias - 03/16/95 EDN-Design
Ideas..... EDN is migrating links. This link is not verified. Search the "title"
EDN for new link. |
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Circuit Tricks Increase LCD Contrast - 04/24/97 EDN-Design Ideas..... EDN is
migrating links. This link is not verified. Search the "title" + "EDN" for new link.
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Code provides adjustable differential drive for robots - 16-Oct-03 Issue of
EDN Intelligently modifying the motor-drive commands to a robot can give you
control finesse during competitions. Moving a joystick hard right, for example,
might have different effects, depending on the robot's speed and direction.
Software running on an inexpensive microcontroller (in this case, an NEC (www.....
[Design Idea by Alton Harkcom, EGO North America, Newnan, GA] |
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Component Video Filtering Using the ML6420/ML6421/ AN-42035 - Fairchild
Application Notes / (app note added 6/06) |
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Configuring the AD7877 - AN-753 Analog Devices Application Notes.....[App
Note] |
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Connect a 2x16 characters LCD display to a 4x4 keypad - Connect some 2x16
characters LCD display and 4x4 keypad with AVR microcontroller (electronic design
added 03/04/05) |
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Constant current, constant voltage converter drives white LEDs - 2-Sep-04
Issue of EDN LEDs usually take their drive from a constant dc-current source to
maintain constant luminescence. Most dc/dc converters, however, deliver a constant
voltage by comparing a feedback voltage to an internal reference via an internal
error amplifier. The easiest way to turn a simple dc/dc converter into a
constant-current source is to use a sense resistor to convert the output current
to a voltage..... [Design Idea by Keith Szolusha, Linear Technology Corp,
Milpitas, CA] |
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Controller Supports Differential Monitor Display - 06/24/99 EDN-Design
Ideas.....(added 6/06] EDN is migrating links. This link is not verified. Search
the "title" EDN for new link. |
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