led torch circuit diagram datasheet

video

Where and schematic wiring stay for you.

PDF littlediode.com//pdf/-U05/U05J.PDF.

Need of IC 4049 for : As we know it is impossible to glow three white in series with full brightness using 5v/20mA directly, if we connect the in parallel the value of current will increase and the battery will drain fastly.

https://en.wikipedia.org/wiki/Led

https://en.wikipedia.org/wiki/Led_Zeppelin

https://en.wikipedia.org/wiki/LED_lamp

https://en.wikipedia.org/wiki/Led_Zeppelin_II

https://en.wikipedia.org/wiki/Led_Zeppelin_IV

LED TORCH CIRCUITS – Talking Electronics

Simple LED Torch Circuit Diagram using 4049 IC

Pocket white-LED torch is power efficient | EDN

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