Elektor Team (9510)

1-07-2001 | Particularly with low voltages, triacs are usually used as control elements for ac voltages. The disadvantage, as so often is the case, is i...

1-07-2001 | From the feedback from our readers we have learned that the measurement of currents in the positive lead of a power supply is often fraught...

1-07-2001 | With the aid of this circuit it is possible to listen, using a portable VHF FM radio, to listen to stations that transmit only your local ca...

1-07-2001 | One of the most frequent uses of n-channel MOSFET’s is as a voltage controlled switch. To ensure that the MOSFET delivers the full supply vo...

1-07-2001 | There are presently many switching regulator ICs. However, the STA801 and STA802 provide two switching regulators in a single package, each...

1-07-2001 | A simple proportional fan controller can be built using the MIC502 from Micrel (www.micrel.com). With this IC the speed of the fan runs slow...

1-07-2001 | A simple way of measuring the amplitude and phase difference between two high-frequency signals is provided by the AD8302 from Analog Device...

1-07-2001 | Drawing nice-looking graphs requires both feeling and skill. In the past, this was taught at school using grid paper, but these days anyone...

1-07-2001 | The circuit shows one way of obtaining a voltage of 90 V from a 1.5 V battery supply. The LT1073 switching regulator from Linear Technology...

1-07-2001 | If a large number of keys have to be scanned, the individual keys are not normally connected directly to the microcontroller. Instead, a mat...