This Texas Instruments circuit is from the 80's. However, it can be implemented with modern operating systems. The power supply must be symmetrical.
We found this oscillator in a publication from the 1960s. The frequency is around 600 Hz with the...
This circuit uses any trigger function according to the associated logic. The circuit is from an...
We found this simple test of zener diodes in a 1978 publication. The potentiometer can be...