Ton Giesberts (358)

1-12-1998 | A difficult problem in the design of conventional stereo tone controls is obtaining synchronous travel of the potentiometers. Even a sli...

1-12-1998 | Nowadays, the speech quality on our telephone systems is generally very good, irrespective of distance. However, there are occasions, fo...

1-12-1998 | Excessive noise is bad for your health and bad for your surroundings. It cannot be said too often: too many young people go prematurely...

1-12-1998 | The up/down drive is intended primarily for use with the tone controls described elsewhere in this issue.

1-10-1998 | A little while ago a reader wrote to say that he had found overdrive on some of his compact discs. This sort of news comes of course l...

1-07-1998 | This very simple infra-red receiver is intended to form an infra-red remote control system with the simple infra-red transmitter describ...

1-07-1998 | The crossover network is intended for use when an existing audio installation is to be extended by the addition of a subwoofer. Often, t...

1-07-1998 | A small audio test generator is very useful for quickly tracing a signal through an audio unit. Its main purpose is speed rather than re...

1-07-1998 | The current drain of the regulator is minute compared with that of, say, a 78L05: at an input voltage of 9 V and open-circuit output, it...

1-07-1998 | The present reference is a special application of current source IC Type LM334. It has a tiny temperature coefficient and draws only a m...