Elektor Team (9512)

1-12-2001 | A flashing LED based on a 555 is not likely to win the first prize for originality, but such a circuit continues to be useful for all kinds...

1-12-2001 | It is not always necessary to use special photoresistors or phototransistors to make light-sensitive switches. Although it is not well known...

1-12-2001 | There are several ICs on the market that are specially designed for charging Lithium-Ion batteries. The LM3647 from National Semiconductor i...

1-12-2001 | Normally, the level of a liquid in a container is determined by sensing changes in the capacitance or resistance between a pair of electrode...

1-12-2001 | A special cable known as Interlink or Laplink is usually necessary for a 4-bit direct cable connection between two computers. Using a small...

1-12-2001 | If you have an application in which a MOSFET is already used to switch a load, it is relatively easy to add short-circuit or overload protec...

1-12-2001 | There are very many switching regulator ICs for reducing a dc voltage. In the ‘step-down’ operating mode, an internal switch connects the in...

1-12-2001 | Darlingtons are useful devices because they have a pleasantly high gain. A disadvantage however, is that they are much slower than normal tr...

1-12-2001 | This circuit shows one way to generate both positive and negative output voltages using a step-down switching regulator. The Micrel (www.mic...

1-12-2001 | It is well known that the p-n junction of a diode has a temperature coefficient of –2 mV/°C, and this fact is often used for temperature mea...