Christoph Tack- TritiLED : a continuously ON LED, Decade flashlight is derived from this.
- The discrete version flashes at 35Hz, with an ON-time for the switching transistor of 12µs. The peak inductor current is dI = V * dt / L = 3 * 12µ / 1m = 36mA (but only 24mA is attained in the circuit) : 11.5µA.
- The PIC-version uses 1.2µs pulses for the 4mA peak efficiency of the OSLON Signal Verde LED: 12.5µA.
- For a pulse frequency of 55Hz, the current consumption is 6.12µA.
- https://hackaday.io/project/28344-10-year-led-flasher
- 50µA current consumption from a 1.5V cell
- https://www.nutsvolts.com/magazine/article/practical-led-indicator-and-flasher-circuits
- reference to human eye reaction
- https://www.electroschematics.com/led-flasher-circuits/
- https://electronics.stackexchange.com/questions/51547/simple-energy-efficient-circuit-to-make-single-ir-led-blink
- http://www.discovercircuits.com/H-Corner/lowpwrflasher.htm
- using a comparator
- https://arduinoelectronics.wordpress.com/2014/01/06/ultra-low-power-led-flasher-with-attiny
- using a microcontroller
- using resistor in series with LED
- https://github.com/hexagon5un/everled
- using an attiny45
- using LED as flyback diode to an inductor
- http://pigeonsnest.co.uk/stuff/picprog/single-cell-led-flasher-two-year-battery-life.html (<50µA)
- Flasher circuits
- Led torch circuits includes an improved version of Modified joule thief
- Simplified white-LED flasher operates from one cell
References
A project log for Ultra low power LED
<1.5µA current consumption when continuously on, optional flashing mode
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