High Frequency Switch (CB6007E)

This 80's circuit can be implemented with modern equivalent FETs with lower on resistance. The attenuation is 80 dB at 100MHz.

| Clique na imagem para ampliar |

Equalizer RIAA with the 741 (CB7530E)
Found in an English Maplin magazine in 1983, this circuit has an RIAA equalization. We suggest its...
JFET Timer (CB12123E)
This circuit was found in a 1979 magazine. We can use any JFET like MPF102 or BF245. The relay is 12 V...
Beat Frequency Oscillator (CB4212E)
This beat frequency oscillator or BFO was found in an American 1980s documentation. The circuit is...