Found in old documentation, this circuit makes use of amplifiers of the time, uncommon today. Next to the diagram, the formula for calculating the components.
This 1967 Electronics World circuit is suitable for frequencies up to 1 MHz. The setting applies...
This circuit allows linear brightness control of an LED from an input voltage. The power supply must...
This circuit was obtained from my Mechatronics Sourcebook, published in the United States. In it...