Voltage to Frequency Converter 2 (CB9448E)

Found in an EDN from the 90s, this circuit uses operational amplifiers from that time, which are uncommon nowadays.

| Clique na imagem para ampliar |

1 W Transistor Amplifier (CB6296E)
This Mullard circuit was found in a 1969 documentation. It uses complementary transistors on the output and...
Tape equalizer (CB7308E)
This circuit was found in an American documentation from 1968. The configuration can be adapted to...
Clock Oscillator LM139 (CB14234E)
We found this configuration in the Linear Applications Handbook of the National Semiconductor of...