More about main (145)

1-12-2004 | Sometimes we would like to hide certain equipment to prevent cluttering up our living room or any interior in general. A number of devices l...

1-12-2004 | There are plenty of mains filters available, with or without sockets, with or without a switch, etc. In any case, this filter is very versat...

1-07-2004 | This circuit may be used to replace the single current limiting resistor often found in dirt cheap battery chargers. The alternative shown h...

1-07-2004 | Many electronics hobbyists will have experienced the following: you try to finish a project late at night, and the mains supply fails. Wheth...

1-07-2004 | This circuit was designed to produce an audible alarm when the mains power is interrupted. Such an alarm is essential for anyone whose livel...

1-02-2004 | The wide availability of low-cost switched mains sockets with radio remote control provides a simple way to control electrical equipment, li...

1-07-2003 | Downloading and CD-burning programs usually provide the option of automatically shutting down the PC on completion of their tasks. However,...

1-01-2003 | Using a simple SMS message sent from your GSM phone, two mains powered loads may to be switched on and off independently, or programmed to d...

1-07-2002 | This circuit can be used to superimpose a 143-kHz carrier on the mains voltage, which allows various applications to be realised. One exampl...

1-07-2002 | This receiver/decoder forms part of a simple mains network remote control system, which also includes the ‘Mains Remote Transmitter’ and the...