Elektor Team (9517)

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...

1-07-2001 | The EDE1144 Keypad Encoder IC from E•Lab Digital Engineering (www.elabinc.com) is designed to interface a matrix-type 4 row × 4 column (16-k...

1-07-2001 | When a lithium-ion battery is discharged below the minimum recommended cell voltage its life expectancy is dramatically reduced. The circuit...

1-07-2001 | In the December issue we’ll describe a fancy Li-Ion charger based on a specially designed IC and boasting many bells and whistles. However,...