LED circuit diagrams
Simple photo-sensitive circuit. 3V battery supply
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Two strips of LEDs fading in a complementary manner. 9V Battery-operated portable unit
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Minimum parts counting - Improved version. 3V battery operation
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17 LEDs in four groups bar-mode sequence. Suitable for shop-windows animation etc.
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Very simple, versatile modular design. No limits to the number of modules used in the ring
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Can drive up to 15 LEDs or LED-clusters. Selectable Bar-length
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Ultra-low current drawing 1.5V battery supply
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A common problem with small torches is the short life-span both of the batteries and the bulb. The average incandescent torch, for instance, consumes around 2 Watts.
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Flashing 13 LED unit, 3V supply. Also suitable for jogger/walkers
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230 or 115 Vac mains operated. Very simple circuitry
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