This circuit is from Delco Radio found in a 1968’s documentation. The transistors are of the time and are not given information about the driver transformer. Note the high supply voltage.
The circuit presented was found in the 1994 Linear Applications Handbook from National...
To obtain triangular signals, we have the circuit in the figure that uses two amplifiers. One of...
This circuit triggers a relay when the detected humidity falls below a value. The system can be...