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Led lighting circuit

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Traffic light controller circuit using CD4027 – NE555
Posted inDigitals & Microcontrollers Lightings

2 Traffic light circuits easy to build

The Traffic light controller circuit. use the LEDs for display and the digital circuit as based, include IC-4027,CD4017,IC-555 and so easy and cheap. [...]
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Switch mode LED driver circuit using transistors
Posted inDC converters

Low Power LED driver circuit with Save energy Switch mode

How to make it light long time or use battery longer than usual. we use this Switch mode LED driver circuit using transistors. and simple circuit below [...]
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