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Air display - A Noisemaker without noise. A simple
rotating display. Just spin and enjoy. While the "Air display" is
rotating, it writes the message on the air. Because the "persistence of
the vision", you will be able to read the message....(electronic design
added 06/07/08)
Alphanumeric LED Display Project - A phenomenal 256-diode ROM
acts as a character generator for a two-digit hexadecimal display.
(project added 11/06)
Alternating LED Blinker uses Four Parts - 03/26/98 EDN-Design
Ideas...../Grand Prize Winner 98 -The circuit in Figure 1 is an
easy-to-make attention-getter and runs for a week or longer on two AA
cells. In September, I used this circuit for a school fundraiser, and it
helped me..... [Design Idea by Andy Meng, Cincinnati, OH]
Alternating LED Flasher uses Minimal Parts - 11/20/97 EDN-Design
Ideas.....A pair of alternating flashing LEDs makes an excellent visual
alarm, this alternating LED flasher is based on one LED with built-in
flashing function and two transistors driving or normal LED….
[Design Idea by Dennis Eichenberg, Parma Heights, OH]
Alternating LEDs Flasher - Classic astable multivibrator using 2
transistors. Transistor is not critical. Try these: 2N4401, 2N2222, NTE123A, NTE123AP,
NTE159, TUP/TUN and those in your junk box, you may find that most of them will work.…
[Tony van Roon's circuit]
AN33 ZXSC100 Single cell DC-DC converter LED driving applications - Zetec
Semiconductors Applications Notes ZXSC100 single cell DC-DC converter offers an
ideal solution to driving white LEDs in flashlights, enabling operation from a single
NiCd or NiMH cell. (app note added 6/06)
