All items tagged with Switch and Gerber (43)

1-07-2005 | This circuit is for an unusually sensitive and stable proximity alarm which may be built at very low cost. If the negative terminal is groun...

1-05-2005 | Of necessity, today’s (surround) amplifiers have to come with lots of inputs and outputs. However, a problem occurs if you want to use sever...

1-01-2005 | A clap switch circuit is a classic beginner’s project. Equipment canbe switched on and off by just clapping your hands. Add a tiny microcont...

1-12-2004 | This multi-position switch is operated by the IR transmitter with HT12R described elsewhere in the issue.The signal transmitted by the trans...

1-12-2004 | This unit, in combination with the USB/I2C interface described elsewhere in this issue, may be used to switch four mains-powered devices on...

1-02-2004 | You don’t need special ICs when a capacitive (or ‘touch’) switch can also be realised with an inexpensive PIC controller. This article shows...

1-12-2003 | There are circuits that consume only a little power or require power occasionally for short periods of time. An example of this last type is...

1-11-2003 | The directional microphone published in the July-August 2002 issue of Elektor Electronics does its job, but does not have the right directio...

1-09-2003 | In spite of alternatives based around the Internet, SMS and e-mail, the good old DTMF remote switch still has its place, and, thanks to the...

1-04-2003 | This circuit can be built into a power bar and used to remotely switch six socket-outlets. It is controlled via an RS232 interface and uses...