1.5 Volt LED Flashers #1: four circuits with description (added 4/02) |
10 Channel LED Sequencer: based on4017 (added 4/02) |
10 LED Sequencer: in PDF format, text in Finnish (added 4/02) |
10 Stage Light Sequencer: flashes10 low voltage bulbs, operates at10-25-Volt
voltage, in PDF format, text in Finnish (added 4/02) |
12 Stage Neon Sequencer (NE 2/NE 51): uses small power 70-Volt neon bulbs
(added 4/02) |
12 Volt Strobe Circuit: this circuit uses12V DC instead od mains AC. This is
very good idea if you don't want to mess with direct mains voltage connected circuit
or you want to run Strobe from batteries. (added 4/02) |
120
VAC Lamp Chaser using Solid State Relays: (circuit / schematic design added
6/06) |
120 Volt AC Lamp Chaser using Solid State Relays: This circuit is similar to
LED clock using12 neon indicator lamps instead of LEDs. It operates from2 high
capacity ni-cad cells (2.5 volts) which keep it going for a couple weeks. High voltage
(70 volts) for neon lamps is obtained from a small switching power supply using
a 74HC14 Schmitt trigger Squarewave oscillator, high voltage switching transistor,
and10 mH high Q inductor. Most any small PNP transistors can be used that have a C/E
voltage rating of 80 or more. (added 4/02) |
16 Stage BiDirectional LED Sequencer: (circuit added 7/02) |
18 Stage LED Sequencer: (circuit / schematic design added 6/06) |
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: (electronic design added 9/02) |
2 Wire Lamp Flasher: Ideal to operate3 to24 Volt DC existing on-Circuit
lamps LED operation is also possible (added 9/04) |
220 Volts Flashing Lamps: Especially designed for Christmas tree lamps to
replace old rmally-activated switches (added 9/04)) |
250ksps 16-Bit Micropower ADC Offers an Excellent Combination of Size Power and Speed:
DN294 Design Notes (Linear Technology) (app note added 6/06) |
2-wire Lamp Flasher: This circuit has been designed to provide that
continuous light lamps already wired into a circuit, become flashing. Simply insert
circuit between existing lamp and negative supply. Especially suited for car or panel
pilot lights, this device can drive lamps up to 10W.... (design added 11/06) |
3rd Brake Light Pulser: (electronic diagram added 6/03) |
40 LED Bicycle Light (555 Timer 6 Volt): (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 09/05) |