| On much audio equipment, the headphone output is simply derived from the loudspeaker output via a series resistor: not a very elegant desi...
More about Circuit (708)
| This article proves that building a no-frills RF-signal generator has nothing to do with sorcery as many d.c. oriented constructors seem t...
| 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...
| Sometimes you wish you had an electronic magnifying glass to do a really accurate voltage measurement, or watch voltage fluctuations withi...
| There are frequent occasions in which a circuit needs a low-current supply at a voltage appreciably higher than the 12 V provided by a s...
| The SCART switching box was carefully designed to make sure that any input is connected to only one output at a time. This was done to pre...
| The circuit described is based on a Type DS1620 temperalure sensor from Dallas Semiconductor. This device can measure temperature wtth a...
| Although a digital circuit for driving a load such as a lamp or a d.c. motor is fairly simple, it has a few drawbacks. It does not make t...
| This circuit switches two electrical loads on and off under the control of an acoustic signal. The remote control operates reliably up to...
| There are often occasions when a higher direct voltage is required than an available battery can provide. In many such cases, the circuit...