December 2023

Three-level voltage indicator on LEDs scheme – the name is very frightening not experienced radio amateur, but nevertheless “the devil is not as bad as it is drawn”. You can learn how to quickly and easily assemble an elementary voltage indicator by reading our article. LED indicator: It should be noted that this is a …

A beginner amateur radio operator simply cannot do without at least a simple power supply. When developing or customizing a device, a regulated power supply is an indispensable attribute. But if you are a beginner amateur radio enthusiast and can not afford an expensive tricked-out power supply, then this article will help you fill your …