We found this circuit in an Analog Devices documentation from the 1990s. It provides an approximation for the sine ꬾ of an input voltage. It is used in analog computing.
This source is used to supply circuits with operational amplifiers, being originally created for...
The transistors in this 80's documentation project may be BC548, the most modern equivalents of...
This circuit uses a FET to drive an LED with constante currente. The current up to 20 mA can be...