Driver for piezo micropositioner (CB8118E)

Found in an Electronic Design from the 90s, this circuit uses a component of the time, difficult to obtain today.

Modulated Light ReceiverIR4199S CB13885E (CB13885E)
This sensitive circuit can be designed with FETs such as BF245 and MPF102. The sensor is a silicon...
Low distortion oscillator (CB9194E)
Found in Popular Electronics from the 1980s, this circuit generates low distortion sinusoidal...
80 m Regenerative Receiver (CB20231E)
This receiver of two transistors for the 3.5 MHz band was found in a circuit manual from the 80's....