Flashlight finder


Posted on Oct 18, 2012

Notes: LM3909, Capacitor, and LED are Installed in a White Translucent Cap on the Flashlight`s Back End. Only One Contact Strip (in Addition to the Case Connection) is Needed for Flasher Power


Flashlight finder
Click here to download the full size of the above Circuit.

Drawing Current Through the Bulb Simplifies Wiring and Causes Negligible Loss Since Bulb Resistance Cold is Typically Less then 2ohm.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Advanced Power Switcher
Four-output-waveform-generator
Auto Alarm
Battery Indicator based on PIC18f452
Audio Triangle Square Wave Generator Using Op-Amp
Semiconductors Lessons In Electric Circuits
Audio PreAmp MIC (dynamic)
PreamplifierCircuit DCF77
25 Watt Audio Amplifier
LED Bike Light Circuit Project
Turntable Photography Equipment
Digital Remote Thermometer



Top