| An amplifier is described which, after a tuning fork has been struck, gives a continuous 440 Hz tone (= International A), so that the user...
More about Design (644)
| The medium Power HEXFET amplifier published in this magazine in December 1993 has one small drawback: It delivers 'only' 60 W into 8 Ω (o...
| On much audio equipment, the headphone output is simply derived from the loudspeaker output via a series resistor: not a very elegant desi...
| Most proprietary subwoofers require you to be well-off and strong: the first to be able to afford them and the second to be able to lift t...
| A microprocessor-controlled charger is described that surely meets the requirements of most users of NiCd batteries. It is fast, suitable...
| In spite of several reports published in the past year or so, there is no possibility of recharging flat dry batteries of whatever type. T...
| A generator is described that, based on the MAX038, provides triangle, sawtooth, sine, rectangular and pulse waveforms.
| A circuit is described that automatically adjusts the flux from a light source (incandescent or fluorescent) in accordance with the ambien...
| There are often occasions when a higher direct voltage is required than an available battery can provide. In many such cases, the circuit...
| The unit described is intended for analysing signals that are transmitted via a MIDI link. It enables the digital information to be made v...