About the article

Two-Cell LED Torch

-

This design uses a classic two-transistor astable multivibrator configuration to drive the LEDs via a transformer from two standard 1.5 V alkaline batteries. The operating principle of the multivibrator has been well documented and with the components specified here it produces a square wave output with a frequency of around 800 Hz.
Downloading of this magazine article is reserved for Elektor Members only.
Already a member? click here to log in.
Loading comments...