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.

12 V Monitor (CB859E)
If the input voltage falls below 12 V the LED glows up. Other voltages can be monitored by...
High sensitivity receiver for fiber optics (CB9734E)
This Low Speed circuit was found in an American documentation from the 1980s. The integrated...
Variable High Pass Filter (CB25599E)
This variable high pass filter covers the range from 23 Hz to 700 Hz with the components used. The...