H. Bonekamp (119)

1-07-1995 | Even with a good frequency meter, it is well-rugh impossible to set two frequencies to a fraction of a hertz. It can, however, be done w...

1-07-1995 | Systems with RAM must always be connected to a power supply otherwise the data in the memory get lost. Any break in the supply can, ther...

1-07-1995 | There are frequent occasions in which a circuit needs a low-current supply at a voltage appreciably higher than the 12 V provided by a s...

1-07-1995 | Batteries often go flat at the most inopportune moments. What's more, frequently, this is not detected until it is too Iate, but this ca...

1-06-1995 | A generator is described that, based on the MAX038, provides triangle, sawtooth, sine, rectangular and pulse waveforms.

1-04-1995 | A simple function generator is described, which provides rectangular, triangular and sinusoidal waveforms in the frequency range d.c.-1 00...

1-03-1995 | This article describes an automatically operating night light with two remarkable features. First of all, a light-operated switch turns th...

1-03-1995 | The circuit described here mimics the behaviour of a firefly, but only if you build more than one. Although it may be a bit bold to spea...

1-02-1995 | The induction motor may be regarded as practically a constant speed machine: the difficulty of varying its speed economically constitutes...

1-12-1994 | The controller was designed to stabilize the speed of small d.c. motors within certain limits. It holds constant the counter-e.m.f. prod...