This circuit makes use of a transconductance operational amplifier from the 90s. Formula for the calculation of the components is given next to the diagram.
This circuit was found in an English operational documentation from 1970. The circuit can be...
This circuit is from a 1974 publication. It generates a pulse with several sinusoidal cycles from...
This solar cell driven circuit makes 4 LEDs run at a speed given by capacitor C2. The circuit is...