2013-11-20 LEDs Power TE Flasher, Not JT Flasher

My recent two blogs on powering a flasher with four red LEDs used a flasher made by modifying a Joule Thief.  It works fine, but it requires a toroid core and wire; the flasher I blogged earlier does not require any inductor.  It is a switched capacitor or charge pump,. and it works okay with two transistors.  It also has a daylight sensor that shuts it off during daylight hours.

What I have to do is put it on a Farad capacitor, charge the cap up to 1.5V, and see how long it will flash.  I’m aiming for 7 or 8 hours, so it will get through to midnight during the winter months when days are short.

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