Microprocessor supervisor (CB9321E)

This circuit was obtained in a Maxim documentation from the 90's. The circuit applies to microprocessors of the time.

Triangular Generator (CB13028E)
National Semiconductor suggests the circuit in the figure that uses two operational amplifiers of type...
Long delay using PUT (CB5151E)
This circuit was found in an American 1980s documentation. PUTs are rare today. Capacitors C1 and C2 are...
Basic transistorized stage (CB9060E)
Found in American documentation from the 1980s, this circuit for general purpose transistors has good...