Simple thermostat for fan

Simple thermostat for a fan on the TDA1151

Noise, constant stress and other activities, that affect our psyche everywhere, make you constantly look for solutions, allowing us to drown our everyday devices. Noise in front of the computer after several hours, produced by a running fan of the computer's power supply, also gets very annoying. The proposed scheme… Continue Reading


Alarm and universal twilight controller

Alarm and universal twilight switch

The device is a universal signaling device and lighting controller. Provides visual and audible signaling of the opening of the front door to the house / apartment, automatically turns on external lighting after dusk, can also serve as additional signaling and as an independent twilight light switch with relay output. Will signal… Continue Reading


Electrostatic air ionizer using double-pointed pins

The possibility of a technical solution has been experimentally proven, previously not found in electrostatic air ionizers – application for air ion emitters pins with two points. This solution is not only technologically simpler, but also improves air ionization with fewer pins. The article describes the design of such… Continue Reading