Micro metronome (CB20743E)

This simple CMOS metronome circuit can be mounted in a small box, providing both sound and light sources.

CX8045GA Crystals For Surface Mount (COM045E)
It can be obtained from Mouser Electronics new crystals for surface mounting from AVX with...
Fuzz (CB12100E)
This effect for guitar was found in an English magazine from 1978. The transistors can be the most...
X-ray detector (CB24101E)
This circuit was published in a January 1971 issue of Radio Electronics to check television...