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Show your creativity and ingenuity with this Valentine's Heart with 12 circling LEDs that are powered by a 'Joule Thief' using a single 1.5v (or 1.2v rechargeable) battery.
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Signing UpStep 1The circuit
The circuit is composed of 2 major parts:
First, a 'Joule Thief' to boost the voltage from a penlight battery to about 4 volts to power red LEDs.
Then, 3 identical circuits to make a 'ring-oscillator' which, when connected as shown, will make strings of the LED chase around in a circle (or a heart-shaped ring).
First, a 'Joule Thief' to boost the voltage from a penlight battery to about 4 volts to power red LEDs.
Then, 3 identical circuits to make a 'ring-oscillator' which, when connected as shown, will make strings of the LED chase around in a circle (or a heart-shaped ring).
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Feb 14, 2009. 6:44 AM
Dipankar
says:
Dipankar
says:
Excellent...........No words to appreciate this work........
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