H. Bonekamp (119)

1-07-1998 | The simple indicator presented in this article may be combined, in principle, with any circuit that contains an LED bar display driven b...

1-07-1998 | We are surrounded by batteryoperated equipment of all kinds, and this array is growing still. Manufacturers and designers lean over back...

1-07-1998 | At first glance, the circuit in the diagram does not look out of the ordinary, and yet, it is. This is because it combines two characteri...

1-07-1998 | The oscillator shown in this article is frequently used in digital circuits and may, therefore, look very familiar. Many readers may not...

1-07-1998 | The programmer is based on an AT89S8252, which is an 8052- derived IC with a flash ROM of 8 Kbyte and a data EEPROM of 2 Kbyte. The ROM...

1-07-1998 | The humidifier circuit is based on a special humidity sensor Type NH-3 from Figaro. Depending on the sensor output, the circuit drives a...

1-07-1998 | The input resistance of a.c.-coupled op amp circuits depends almost entirely on the resistance with which the d.c. setting is determined...

1-07-1998 | Active rectifiers often consist of an op amp circuit with diodes in the feedback loop. Such traditional arrangements work very well in m...

1-07-1998 | This article is of interest only to readers whose bicycle lights are powered by a dynamo. The laws on bicycle lights in the United Kingd...

1-04-1998 | Parking in crowded streets often causes one’s car to bump into another one. Even though this normally happens at very low speeds, it shoul...