Ton Giesberts (358)

1-07-2005 | Steep filters can be realised in many different ways, for example by connecting active 2nd to 5th-order sections in series and calculating t...

1-07-2005 | The purpose of this circuit is not only to extend an optical digital audio connection (Toshiba Toslink) but also to function as a splitter,...

1-07-2005 | Professional (directional) microphones often require a phantom supply of 48 V. This is fed via the signal lines to the microphone and has to...

1-07-2005 | There is no doubt that this small power amp packs a punch. It is capable of delivering a healthy 200 W into 4 Ohm. Into 8 Ohm it can still o...

1-07-2005 | This circuit shows a way to allow normal regulators to be used in situations with higher input voltages. Although the solution consists of a...

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)...