This circuit was found in a 1970s documentation. The components are from that time, and semiconductors are difficult to obtain today.
Figure bellow shows a ring oscillator using five inverters of a 4049. [The circuit operates only...
This circuit, which can also be used with flashing LEDs as long as they have in parallel a charge...
June 2017 - The new TE Connectivity FSJMI series of illuminated tactiles switches is now available in Mouser...