This circuit was found in an Elektor from the 90s. It makes use of digital CMOS integrated devices common today. The signal is controlled automatically sequentially.
Indicated for vinyl media recovery, this circuit is from the 80's, having been found in an...
This circuit aims to take advantage of two old telephone sets in an efficient domestic intercom...
This circuit can be used for signaling a panel with a common incandescent lamp. The lamp will...