Introduction: Economy Flashlight
A flashlight that flashes/pulses at ~60 Hz, duty cycle 50%, too fast for the human eye to see it. You can see it flashing with a camera.
Parts:
555 timer
8 pin socket for the IC
5x LED (I used high power)
2x 150 ohm resistors
12K resistor (R1)
120K resistor (R2)
2x 0.1 uF caps
2N2222 / BC547 NPN transistor (or something that can handle better the current - my 2N2222 it gets hot so i used a heatsink )
9V battery clip
470 uF cap (any kind will do or just skip it)
Optional:
Switch
Zip tie To hold the battery
Heatsink
Other:
Tools
Toner Transfer Method
etc.
If you do not use the switch just solder a wire instead of it.
Hope you enjoyed it. The flashlight is more economical because it is not continuously on.
Sorry for grammar or other mistakes.
Parts:
555 timer
8 pin socket for the IC
5x LED (I used high power)
2x 150 ohm resistors
12K resistor (R1)
120K resistor (R2)
2x 0.1 uF caps
2N2222 / BC547 NPN transistor (or something that can handle better the current - my 2N2222 it gets hot so i used a heatsink )
9V battery clip
470 uF cap (any kind will do or just skip it)
Optional:
Switch
Zip tie To hold the battery
Heatsink
Other:
Tools
Toner Transfer Method
etc.
If you do not use the switch just solder a wire instead of it.
Hope you enjoyed it. The flashlight is more economical because it is not continuously on.
Sorry for grammar or other mistakes.
