Elektor Team (9512)

1-07-2002 | If you need to drive a number of white LEDs to provide display backlighting or for a white-light torch what’s the best way to configure them...

1-07-2002 | If you need an adjustable ‘on’ or ‘off’ time for some application, then this is the circuit you have been looking for. A problem that often...

1-07-2002 | Now that we’ve become used to USB you really appreciate the facility to connect or disconnect devices without having to turn the power off f...

1-07-2002 | In order to connect the open-collector output of a standard Conrad DCF receiver module (order number 121177), which has a relatively low ope...

1-07-2002 | All simple constant-current sources generally operate on the same principle: a current is allowed to flow through a resistance and some sort...

1-07-2002 | A Maxim MAX6710 IC (http://pdfserv.maxim-ic.com/arpdf/MAX6710.pdf) can be used to monitor four supply voltages. If any monitored voltage dro...

1-07-2002 | It is often the case with electrical systems using more than one power supply that the supplies must be switched on in a defined sequence to...

1-07-2002 | This mini pocket torch combines the advantages of Lithium button cells with a super-bright white LED. The lithium cells are small, have a lo...

1-07-2002 | Here we have yet another excellent universal battery charger that is easy to build and can be used to safely charge practically all commonly...

1-07-2002 | Old PCs are usually not immediately discarded after the purchase of a new one, but often remain in use for certain tasks. To avoid being tie...