Harmonic generator (CB8989E)

This circuit generates a 1296 MHz signal from 100 or 1,000 kHz crystals. We found it in an American documentation for radio amateurs.

| Clique na imagem para ampliar |

Manually triggered VCO (CB19082E)
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...
Automatic Telephone Recorder (CB5992E)
This circuit turns on an old cassette recorder when the telephone rings, thus enabling the...
Incandescent Flasher (CB4595E)
This circuit can be used in panel signaling with common incandescent lamp. The lamp will flash at a...