| (AN 30) LX1995 LED
Driver: Camera Flash Application: Application Note Microsemi 1313 (added 05/07) |
|
µP Displays 10 Bit Data on Three LEDs: 11/07/96 EDN-Design Ideas / (added 6/06) circuit in Figure 1 uses a PIC16C55
µP to read 10-bit binary data and directly display data in decimal format on three common-cathode LED displays. If value of data exceeds 999, displays show three hyphens
(---) to represent overflow. PIC16C55 has high drive capability. Each output pin can source 20 mA and sink 25 mA; outputs can thus directly drive LED display |
|
0.6/1.6 MHz Boost Converters with 22V Inrternal FET Wsitch in SOT-32: National Semiconductor Application Note LM2731 July
2003 (app note added 02/05) |
|
1 Watt 5 Volts Power Booster for the MLX90121: Melexis Application Note (app note added 2/06) |
|
1.2MHz/2.4MHz White LED Step-Up Converters with Built-In Schottky in ThinSOT: Linear Technology LT3465 (app note added
6/06) |
|
1.5 Volt LED Flashers #1: four circuits with description (added 4/02) |
|
1.5V Battery Powers White LED Driver: 09/30/04 EDN Design Ideas / (added 1/06) Although white LEDs are common
in a variety of lighting applications, ir 3 to 4V forward-voltage drop makes low-voltage applications challenging. Charge pumps and or ICs are available for driving white LEDs, but y generally
don't work with low supply voltage of 1.5V in single-cell-battery applications. |
|
1.5V LED Flasher Oscillator: Mimics now discontinued LM3909 IC Can be adapted to a wide variety of applications
(added 9/04) |
|
10 Channel LED Sequencer: based on4017 (added 4/02) |
|
10 LED Sequencer: in PDF format, text in Finnish (added 4/02) |
| 10, 8 And 6 Step LED Circuits (CD4017):(electronic circuit added 05/07) |
|
100ma UltraLow Noise Charge Pump LED Supply with Output Current Adjust: Linear Technology LTC3201 (app note added 02/05) |
|
12 Volt Lamp Fader (LEDs or Incandescent): (electronic circuit added 10/05) |
|
13 Color LED Rainbow: Only a few years ago, choice of LEDs was limited to IR, red, yellow, and green. LED
manufacturers have been busy extending spectrum, and filling in gaps. latest generation of organic LEDs (OLEDs) has added some dazzling new colors to spectrum. This
circuit uses a set of 13 differently colored LEDs to generate a full color spectrum. photo does not fully represent colors generated due to camera limitations. real-world
display is very eye-catching. If you want to "trick out" your PC, this circuit is for you. Forget about those boring blue PC light displays. (added 10/05) |
|
13.56MHz RFID Systems and Antennas Design Guide: Melexis Application Note (app note added 2/06) |
|
15V Battery Powers White LED Driver: 09/30/04 EDN Design Ideas / (added 1/05) Although white LEDs are
common in a variety of lighting applications, ir 3 to 4V forward-voltage drop makes low-voltage applications challenging. Charge pumps and or ICs are available for driving white LEDs, but y
generally don't work with low supply voltage of 1.5V in single-cell-battery applications.... |
|
16 Stage Bidirectional LED Sequencer: (circuit added 7/02) |
|
16x16 LED Matrix and Driver: (circuit added 9/04) |
|
18 Stage LED Sequencer: (electronic (schematic / circuit added 11/05) |
|
1a Flash LED Driver : Sipex Application Note (app note added 2/06) |
|
1a Low Noise High Current LED Charge Pump with Independent Torch/Flash Current Control: Linear Technology LT3216 (app note
added 02/05) |
|
2 Transistor 2 LED Flasher: (circuit / schematic design added 6/06) |
|
2 Transistor LED Flasher #1: (circuit added 7/02) |
|
2 Transistor LED Flasher #2: (circuit / schematic design added 6/06) |
|
20ma LED Ballast: I use this circuit for general use to power white LEDs, like a headset light I use on my desk and a
keyboard light for my computer. I built it into a tiny Radio Shack project box (270-288), which y no longer sell. I put heat-shrink tubing around female output connector (RS P/N
273-1743), so that contacts are not exposed, but you can still plug and unplug it. Designed
by Andrew R. Morris
(added 9/05) |
|
27MHz to 67MHz Low-RF Single-Conversion Superhet Receiver: Melexis Application Note (app note added 2/06) |
|
28 LED Clock Timer 72 LED Clock: programmable clock Timer circuit that uses individual LEDs to indicate hours and minutes
(added 4/02) |
|
3-Colour Display using Bicolour LEDs: (electronic Circuit / Schematic added 10/04) |
|
40 LED Bicycle Light (555 Timer 6 Volt): (circuit added 7/02) |
|
5x7 Display: (electronic circuit added 05/07) |
|
7 by 10 LED Moving Sign ( 27c512 Eprom): (electronic circuit added 4/05) |
|
7 Segment LED Counter: (circuit / schematic design added 6/06) |
|
72 LED Clock: (circuit added 7/02) |
|
8 Random Flashing LEDs: This project flashes eight LEDs in an apparently random manner. It uses a 4060 combined counter and
display driver IC which is designed for driving 7-segment LED displays. The sequence is not really random because seven of LEDs would normally be display segments, eighth LED
is driven by an output that is normally used for driving furr counters. The table below shows sequence for LEDs. You can use less than eight LEDs if you wish and table may
help you decide which ones to use for your purpose. (added 6/06) |
|
8 Stage LED VU Meter: (electronic circuit added 10/05) |
|
9 Second Digital Readout Timer: (circuit added 7/02) |
|
9 Second LED Relay Timer: (circuit added 7/02) |
