Ton Giesberts (358)

1-07-1994 | This is a no-frills audio power amplifier based on inexpensive transistors. It is short-circuit protected and has a maximum power output...

1-07-1994 | As usual in RC filter designs. resistors R1-R4 and R5-R8 are given equal values. Unfortunately, again as usual. This leads to rather awk...

1-07-1994 | As far as audio enthusiasts are concerned, striving for perfection is a never-ending quest. The present circuit should appeal to them.

1-07-1994 | Reversal of the supply lines to a circuit normally has disastrous consequences. The protection described here can prevent such a disaste...

1-07-1994 | Home made audio amplifiers are rarely equipped with a remotely controlled motor-driven volume control. Curious, because motor-driven pots a...

1-07-1994 | The principle of the amplifier is simple: take a common-or-garden operational amplifier and make the feedback loop switchable with the and o...

1-04-1994 | The popularity of halogen light is still increasing, and rightly so because of some distinct advantages: the colour temperature is agreeab...

1-04-1994 | Music should be heard and enjoyed as if the orchestra were right in front of you. Unfortunately, neighbours, children and other members of...

1-04-1994 | A flash tube control circuit is described wh ich is suitable for playful as weil as serious applications. The unit has a flash frequency o...

1-03-1994 | This article describes a completely updated and higher-power version of the 'Medium power a.f. amplifier' published in this magazine just...