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.
The UVTRON tube is an ultraviolet radiation sensor. In this circuit from Radio Electronics from...
This circuit was found in a 90s Popular Electronics. The circuit uses components from that time,...
An stable multivibrator with 50% of duty cucle can be mounted using the 555 as shown by the...