We found these circuits in a Popular Electronics from the 90s. The circuit has a simple low power version and a higher power version with MOSFET (VMOS) of the time.
This circuit is from the Motorola Linear Databook published in 1990. The circuit for 1 kHz can be...
This simple injector circuit can actually be powered by voltages from 3 to 9 V. The frequency is...
This stair generator uses an R/2Fl network to determine the amplitude of the steps. This circuit...