This circuit is an improved version of the previous ones with the LM3914. We found it in the March 1992 issue of Radio Electronics magazine.
This circuit for igniting gas flames was found in a 1967 Electronic Design. The SCR firing device is a...
This RF wattmeter was found in an American 1980s documentation. The components are common and the...
This signal follower, from a publication from the 1970s, uses old germanium transistors such as...