Instrument driver (CB9728E)

This high impedance driver was found in a 1980s documentation. The integrated circuit is a type of the time, admitting modern equivalents.

Low Power Bluetooth Modules
June 2017 - Mouser Electronics announced the availability of new low-power Bluetooth modules from...
Zener diode expander (CB8819E)
With this circuit it is possible to obtain a higher voltage from a zener diode. The circuit is from...
Regenerative switch (CB9356E)
Found in American documentation from 1964, this circuit uses transistors from that time, which are not...