Rail to Rail Oscillator 555 (CB9099E)

Found in an Electronic Design from the 80s, this circuit generates a 500 Hz signal and can be used as a shield

Low hysteresis comparator (CB6085E)
Obtained from a 1980s Linear Technology documentation, this circuit has a hysteresis of less than...
Long time timer (CB9683E)
Found in documentation from the 1980s, this circuit makes use of discrete components of the time....
High Impedance Transistor Amplifier (CB12207E)
With this 1-transistor circuit we have a high input impedance and good gain. The circuit is from a...