Using the
Noise Reduction Feature on the AD7877 - AN-766 Analog
Devices App Note - . . .
Versatile
LED Display - This circuit uses an erasable programmable
read only memory (EPROM) to display various light patterns on LEDs. Since bicolour LEDs (comprising green and red
LEDs) have been used, display is possible in three colours (green, red and amber). . . . [© EFY Enterprises Pvt.
Ltd. All rights reserved.]
VFD (Vacuum Fluorescent Display) and Filament
Power Supply - The LT3581 is a PWM DC/DC converter with
built-in fault protection features to aid in protecting against output shorts, input/output overvoltages, and
overtemperature conditions. The part consists of a 42V master switch, and a 42V slave switch that can be tied
together for a total current limit of 3.3A. . . . [Linear Technology App Note - , Jan 16th 2012]
VFD (Vacuum Fluorescent Display) Flyback Power
Supply - The LT3758 is a wide input range, current mode,
DC/DC controller which is capable of generating either positive or negative output voltages. It can be configured
as either a boost, flyback, [Linear Technology, SepIC or inverting converter. The LT3758 drives a low side
external N-channel power MOSFET from an internal regulated 7. 2V supply. The. . . [Linear Technology App Note - ,
Jan 16th 2012]
Visual metronome
- Schematic only, no circuit description. . . [Designer's name not given]
Wall Clock Governor
Driver - These were common before the advent of quartz
controlled stepping motor clocks. Here is a reverse engineered diagram of this very typical circuit. . . .
[Reverse engineered schematic by Stepan Novotill]
Waveform Monitor with LCD
- The result was a project that includes a waveform capture circuit, a graphic
LCD (Liquid Crystal Display) and a control panel with LED indicators. The details of the Graphic LCD display
unit, composed of the LCD module, a serial interface, and bias supply were published earlier on this site, . . .
[From Dick Cappels' project pages]
White LED driver backlights LCD and keypad - 11/13/03
EDN Design Idea Designers widely use white LEDs to backlight color LCDs and keypads in handheld devices, such
as cell phones, MP3 players, GPS navigators, and PDAs. Their spectrum and brightness represent near-ideal light
sources. One possible con. . . [by Fabien Franc, Catalyst Semiconductor, Sunnyvale, CA]
White LED driver provides 64 step logarithmic dimming
- 10-Jun-04 EDN Design Idea The circuit of Figure 1 is designed for
portable-power applications that require white LEDs with adjustable, logarithmic dimming levels. The circuit
drives as many as four white LEDs from a 3.3V source and adjusts the total LED cur. . . [by William Hadden,
Maxim Integrated Products, Sunnyvale, CA]
White Light LED Driver With Gradual Dimming (Rev. A) -
Texas Instruments provides a broad portfolio of high-performance products for your LED design needs. From RF and
power management (including AC/DC, Power Factor Correction, DC/DC and linear power conversion) to DSPs and
ultra-low-power MCUs, TI has products to differentiate your design. And, TI's local support and applications
expertise can help you get to market faster. . . . [Texas Instruments App Notes, 10-Jan-07]
White-LED Driver Touts High Efficiency - 06/12/03 EDN
Design Idea White LEDs, the most recent addition to the LCD backlight, find common use in providing backlight
for color LCDs. Thanks to their size and white-light output, they appear in small, portable devices with color
displays, such as PDAs. . . [by Dimitry Goder, Sipex Corp, San Jose, CA]
Wide Band Fuel Mixture Display
- This document is an introduction to the Wideband Fuel Mixture
Display (FMD). . . .
xTimer V1.0
- Easy build 4-channel timer, suitable for energy saving, simple hardware
and nice firmware with c coding. Automatic power down mode, simple settings, optional buzzer for sound alarm. . .
. [Wichit Sirichote, designer]
YPBPR to RGB Converter
- In this realization of a component video (YPBPR) to RGB adapter, Amplifier
count is minimized by performing passive arithmetic at the outputs, but this requires higher gains, thus a higher
supply potential is needed for this (for at least the positive rail). One small drawback to this otherwise
compact solution is that the. . . [Linear Technology App Note - , Mar 25th 2010]
YPBPR to RGB Video Converter
- This circuit shows LT6552 Amplifiers connected to convert component video
(YPBPR) to RGB. This circuit maps the sync on Y to all three outputs, so if a [Linear Technology, Separate sync
connection is needed by the destination device (e. g. studio monitor) , any of the R, G, or B channels may be
simply looped-through the sync input (i. e. set ZIN. . . [Linear Technology App Note - , Mar 25th 2010]
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