| This circuit can be used to turn the pump on and off when a solar collector is used to heat a swimming pool, for example. This way the water...
More about Switch (454)
| In these times with viruses and other threats from the Internet it would be nice to have reassurance that the PC cannot be infected. That is...
| It is sometimes necessary for an RC (remote control) model to contain some kind of switching functionality. Some things that come to mind ar...
| How often does it happen that you close down Windows and then forget to turn off the computer? This circuit does that automatically. After W...
| The vacuum cleaner must be switched on when a grinding or sawing tool is switched on and as the operator's attention must be directed t...
| This circuit switches a printer’s USB connection from a PC to a laptop. What was needed was a method of allowing a laptop to use the printer...
| In this month’s modding & tweaking article we delve a little more into the ‘not so very useful, but nevertheless quite funny’ types of circu...
| If you want to apply computer control to a solenoid valve or another DC load there is no need to start looking for an expensive measurement...
| The switch-mode power supply chosen by the author for this article is built without the use of special-purpose ICs and so can be completely...
| Do you have an (old) PC that functions as a server and is turned on 24 hours per day? That takes quite a lot of energy. It can be done much...