H. Bonekamp (119)

1-12-1995 | Metering circuits frequently make use of a differential input stage, which nullifies any interference generated in, for instance, the met...

1-12-1995 | It is not always realized that, when a short-circuit occurs in a circuit supplied via a Type 78xx regulator, this and similar types of re...

1-12-1995 | Here is a simple, fairly accurate and linear, full-wave rectifier for small signals (approx. 10 mV to 3 V) with a frequency between d.c....

1-12-1995 | The wideband distribution amplifier is based on a single Type OPA621. This op amp is typified by a very short settling time, a high slow...

1-12-1995 | The frequency of the standard Wien bridge oscilator presented is made variable by maktng one of the arms a mono potentiometer. The bridg...

1-12-1995 | The very real advantages of an active probe over a passive one are that loading caused by large cable capacitances is prevented and that...

1-12-1995 | Water pipes can be descaled withb the aid of a magnetic field or an electric filed. The present descaler uses an electric field, which is...

1-11-1995 | An analogue oscilloscope that is used for measuring slow processes has the drawback that the test time per scale division is relatively sh...

1-07-1995 | A current source based on one op amp can not easily be made variable, nor is the current very stable when standard resistors are used. T...

1-07-1995 | Current souces ar e used in a variety of applications. They can be designed in a number of ways. One of the simplest is a common resisto...