Harro Kühne (6)

1-03-2002 | Add two op-amps to a Wien-Robinson bridge and we can construct a notch filter whose centre frequency can be set using a single resistor. Thi...

1-12-1997 | Xicor's digitally controlled E²POT ICs provide ergonomic and longlasting alternatives to mechanical potentiometers. The ICs in the X9CMM...

1-10-1993 | The frequency meter described here has a maximum input frequency of about 2 MHz, and is ideal for building into function generators and sim...

1-09-1993 | Temperature may be measured electronically with cornmercially available temperature- to-voltage converters. Since good-quality, calibrated...

1-03-1992 | When the value of a capacitor or inductor is measured, it is imperative that ohmic losses do not affect the result. The principle of measu...

1-12-1991 | The converter, based on a Type CA3080 operational transconductance amplifier (OTA) converts a triangular voltage into a sinusoidal one wi...