H. Bonekamp (119)

1-11-1994 | A circuit is described that is a good compromise between complexity and accuracy. The results can be displayed on a standard digital vol...

1-07-1994 | The monitor is intended especially for force-cooled power resistore mounted on a heat sink. Such constructions are used, for instance, t...

1-07-1994 | The circuit gives a coarse indication of the frequency by a tricolour LED, the Type LF-59EBGBW from Kingbright. When the frequency of the...

1-07-1994 | An ideal power supply maintains its e.m.f., irrespective of whether it is providing current or sinking it. The present supply approaches...

1-07-1994 | Occasionally, an ideal fullwave rectifier is required, for example inadynamie compressor where switching thresholds and non-linear behav...

1-07-1994 | Electrostatic discharge in a workshop or laboratory can lead to a great deal of damage. Even the electrostatic charge on the human body ca...

1-05-1994 | The probe described overcomes several of the shortcomings of the probe supplied with many oscilloscopes. It is a 10:1/100:1 design that en...

1-12-1993 | The circuit in the diagram enables the speed of an electric PCB drill to be controlled with only one preset. As an aside, the rotary dire...

1-12-1993 | The timer is based on the well- known display driver LM3915, which has a logarithmic scale. This may seem strange, but is not because a s...