FDM Stereo Decoder (CB6209E)

This frequency division multiplexing signal decoding circuit is from a 1980s documentation. The integrated circuit used is not very common today.

| Clique na imagem para ampliar |

2.34 kHz oscillator with the LM3900 (CB13843E)
Of course, other frequencies can be generated by changing the components. The circuit generates a...
Audio Visual Thermometer (CB18469E)
This circuit was found in a 1974 publication. It provides a tone indication of the temperature sensed by...
FM Transmitter Powered by The Power Grid (CB17354E)
This spy transmitter can be plugged directly into a power outlet. The power comes from a regulated...