3-IC AD converter (CB9028E)

Found in American documentation from the 70s, this circuit uses components of the time, uncommon today.

| Clique na imagem para ampliar |

Low Noise Crystal Oscillator (CB6151E)
This circuit was found in an 80's Electronic Design. The frequency depends on the crystal and the...
Analog speed game (CB20961E)
This quick response game was found in a Popular Electronics from the 80s. It uses only discrete analog...
RIAA preamplifier (CB8250E)
This circuit was obtained in an Electronics World of 1968. The operational amplifiers ones are...