This circuit was obtained in a 1968 manual of General Electric. The components used are of the time, but they admit equivalent. Observe the optical feedback system for control.
This amplifier uses common transistors in a phase inverter configuration. Transistors must be...
This circuit generates a linear ramp whose frequency depends on the capacitor and the setting. The...
We found this circuit in a Popular Electronics from the 90s. Transistors can be modern...