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Torch Circuits-LED - A LED torch is one of the simplest
projects you can build and it's very interesting as it uses a super-bright white LED. In the history of LED
production, red LEDs were the first to be invented and their output was so dim you could barely see if they were
illuminated. You needed a darkened room to see them at all. . . [email Colin Mitchell: talking AT tpg.com.au]
TPS60230 WLED Charge Pump - LED lighting designers are
challenged with meeting their efficiency and reliability goals faster in advanced LED lighting designs. LED
lighting customers seeking the latest in innovative and affordable LED lighting solutions can benefit from TI's
broad product portfolio of LED drivers, AC/DC, DC/DC, power management devices, wireless and wired interface
control and embedded processors. LED designers have the option of not only controlling the power stage, but
regulating LED currents as well, eliminating the need for multiple components and reducing system cost. . . .
[Texas Instruments App Notes, 9-Nov-05]
TPS6102x Boost Converter Down Conversion Mode - TI
Application Note . . .
TPS61040 Inverter Design Rev. A
- TI Application Note . . .
TPS61042 Dual Li-ION & Higher Input Voltages - TI
Application Note . . .
TPS61042 White Light LED Driver Boost Converter Rev. A - TI Application Note . . .
Traffic Light - Our TRAFFICER - GYR3 has many applications;. Mount the TRAFFICER on your toy train-tracks
for signaling. Place TRAFFICER anywhere you’d like to draw attention and a smile. The unique small design will
allow you to mount it almost anywhere. Operates with 9V battery, 12V car battery, four 1. 5V batteries, or via
one of our battery simulator kits. . . . [Kit from Elich Industrial Development, Corp]
Transistor Flasher
- The basic two-transistor flasher shown below has found its way into dozens of applications due to its
simplicity and versatility. Applications have included such diverse circuits as a micropower low battery
indicator, a lightning detector, . . . . [Charles Wenzel (unless otherwise noted)]
Transistor LED Flasher - A simple LED flasher that uses only two transistors, one capacitor and one resistor. This
basic oscillator can have other simple applications. . . . [designed by Jose Pino]
Transistor LED flasher - This circuit has a lot going for it. For one thing, it only consists of two transistors, two
capacitors and four resistors. That also means it consumes very little power. You can control the flash rate by
changing the size of the 100k resistors (100k makes for a pretty slow rate). You can also control the duty cycle
by using resistors of different values on the two sides. . .
Transistors Drive LEDs to Light the Path - 01/06/11 EDN
Design Idea Replace power-hungry incandescent bulbs with LEDs and reduce energy consumption. . . [by Eliot
Johnston, Comnet International, Richardson, TX
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