Ton Giesberts (354)

1-05-2005 | Of necessity, today’s (surround) amplifiers have to come with lots of inputs and outputs. However, a problem occurs if you want to use sever...

1-03-2005 | The High-End Preamp preamplifier published in the April & May 2004 issues naturally calls for a matching final amplifier in an identical hou...

1-02-2005 | When the ISM frequency band was made available in Europe for audio applications, Circuit Design, a manufacturer of professional RF modules,...

1-01-2005 | PC power supplies can often be bought cheaply at places such as computer fairs. But it isn’t that easy to check if such a (second hand) powe...

1-12-2004 | This circuit shows that dimmers intended for use at mains voltage do not always have to contain a triac. Here, a MOSFET (BUZ41A, 500 V/4.5A)...

1-12-2004 | There are plenty of mains filters available, with or without sockets, with or without a switch, etc. In any case, this filter is very versat...

1-11-2004 | In the three-part article for the ClariTy 2 x 300-W final amplifier, the various input and output filters were not described. In this articl...

1-10-2004 | As already mentioned in the previous parts of this article, this final amp needs more than just a heavy-duty symmetrical power supply. In th...

1-09-2004 | A pulse-width-modulated output stage with hi-fi characteristics is something rather special. We already described various aspects of this de...

1-07-2004 | If you ever thought of experimenting with pulse-width modulation, this circuit should get you started nicely. We’ve kept simplicity in mind...