Blinker, Through-Hole

by AVB.
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2 layer board of 1.02x1.01 inches (25.81x25.78 mm).
Shared on October 10th, 2016 20:53.

A simple “astable multivibrator” circuit designed for testing through-hole soldering techniques. Requires two transistors (2N2222 or equivalent, TO-92,) two LEDs, two capacitors, four resistors, and a 9V battery clip. Connect battery to test assembled circuit.

Using 1uF capacitors, 1k resistors, and 1M resistors, the LEDs blink rapidly, but not rapidly enough to call it flickering.

Two-layer board. Designed with KiCAD.

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