This circuit switches on an external load after a certain interval given by the capacitor. The circuit is from a documentation from the 80s. The load depends on the relay used.
This dimmer was found in a 1980 publication. The Triac can be any of the TIC series and the...
This circuit was found in documentation from National Semiconductor. Its purpose is to convert an input...
This circuit for UHF between 800 and 1 000 MHz was found in an American documentation from the...