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Teletext Devices
- . . . [Mijo Kovacevic, S51KQ]
Ten Turn Pot Forms Frequency
Readout - Let’s say you are designing a signal
generator for a test fixture. To adjust the frequency you would like to use a ten turn pot with a nice dial
mechanism attached as a frequency display. However, a display range of 0 to 9. 99 would be impractical since . .
. [Hobby Circuit designed by David Johnson P.E., 01/27/08]
TFT Bias (5V AT 40mA, 10V AT 2mA,-10V AT 2mA) and
White LED Backlight Supply from Single Li-Ion Cell - The
LT1942 is a highly integrated quad switching regulator designed to provide all necessary power supply functions
for TFT displays, including the white LED backlight driver. The TFT supply output voltages are independently set,
unlike charge pump solutions which have many limitations. . . . [Linear Technology App Note - , Mar 24th 2010]
TFT-LCD Bias Generator: 10V, 24V,-6V Output
- With a small external charge pump network, the LT1947 produces all
three required bias voltages for TFT-LCD displays: 10V AT 150mA, 24V AT 10mA and -6V AT 10mA. . . [Linear
Technology App Note - , Mar 24th 2010]
TFT-LCD Bias Generator: 12V, 20V,-6V Output
- With a small external charge pump network, the LT1947 produces all
three required bias voltages for TFT-LCD displays: 12V AT 120mA, 20V AT 10mA and -6V AT 20mA. . . [Linear
Technology App Note - , Mar 24th 2010]
The
Cheap But Useful Ericsson Cell Phone Display GA628 - You
used to have an Ericsson Cell Phone GA628 and you also loved it very much, however after few years of using,
you’ve decided to change a brand new cell phone and you just threw it inside the drawer and never touch or look
on it after that?. . . .
Theory & Application of the ML4874 &
ML4876 LCD Backlight Controller ICs/AN-42010 - Fairchild
App Note - . . .
Thermally Compensate LCD Contrast BIASs
- 03/16/95 EDN Design Idea The circuit in Fig 1 provides digital control and
automatic thermal compensation for LCD contrast bias. This control and compensation eliminates the need for
panel-mount hardware and frequent manual adjustment of LCD contrast in . . . [by Damian Anzaldo, AVO
International-Biddle Instruments, Blue Bell, PA]
Thermometer with Four-Digit LED Display
- Until recently, the Philips SAA1064 LED driver IC has been a sort of
unofficial standard for driving seven-segment LED displays. It can be used to implement four-digit displays that
can be driven over an I2C bus. must register on this site. . . [Published in Elecktor July/Augu, 2010]
Three Channel Integrated Multiplexer and Line
Driver - The LT6555 is a complete 3-channel wideband
video 2:1 multiplexer with internally set gain of two. This part is ideal as an output port driver for HD
component or high-resolution RGB video products. The basic application circuit is shown here with terminations
shown on all ports, though in many applications the input loading. . . [Linear Technology App Note - , Mar 25th
2010]
Three Channel, Single Supply Video Line Driver (AC
Coupled) - The LT6553 ultra-high-speed triple video
driver configured for single-supply AC-coupled operation. This part is ideal for HD or high-resolution
workstation applications that demand high bandwidth and fast settling. The Amplifier gains are factory-set to two
by internal resistors. . . [Linear Technology App Note - , Mar 25th 2010]
Three-Colour
Display using Bicolour LEDs - . . .
Tiny Regulators Drive White LED Backlights - Design Note
231. . . [Linear Technology]
TLC5940 PWM dimming provides superior color quality
in LED video displays - 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, 18-Apr-06]
TPS60230 WLED Charge Pump - 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, 9-Nov-05]
Transistor Considerations for LCD
Backlighting: High Efficiency DC-to-AC Conversion - Zetex
Semiconductors Applications Note: A study of the parametric requirements of Bipolar transistors for the
self-oscillating resonant "Royer" inverter with respect to LCD backlighting, including circuit behaviour, the
voltage ratings of most relevance to ensure optimized device selection, and compact packaging options. . .
Trip the Light Fantastic with LED Gadget Freaks
- Here is a collection of the best LED gadgets that have made themselves home
in Gadget Freak. . . .
Triple Video Line Driver (DC Coupled)
- In DC-coupled systems, the video swings are fixed in relation to
the supplies used, so back-terminated cable drivers need only provide 2V of output range when optimally biased.
In most cases, this permits operation on lower power supply potential (s) than with AC-coupling (unclamped mode).
Generally DC-coupled circuits use split. . . [Linear Technology App Note - , Mar 25th 2010]
Two nixie display clock - My
clock building habit is apparently as bad as ever. This time, it was inspired by a stash of Burroughs B5092s, so
I needed to vertically align it. Also, since I wanted to make it as small as possible, I wanted to keep nearly
everything surface mount, so I abandoned the idea of using 74141s in favor of standard BCD to decimal converters
plus some external drive transistors. No need to multiplex since I'm only using two tubes, so this design is
actually pretty straightforward. . . . [© 2007 by Riad S. Wah[by]
Two Wire LCD Interface using PIC16cf84
- . . . [Reynold's Elec]
Two-Input Video Fader
- In some cases it is desirable to adjust Amplitude of a video waveform, or
cross-fade between two different video sources. This circuit provides a simple means of accomplishing this. The
0V to 2. 5V control voltage provides a steering command to a pair of Amplifier input sections; at each extreme,
one section or the other takes. . . [Linear Technology App Note - , Mar 25th 2010]
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