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| The programmable timer/con-troller, described elsewhere in this issue, is not really complete. It cannot be used to switch aquarium lighting...
| An essential feature of any electronics enthusiast`s lab is a reliable power supply unit. The basic requirements for such a unit are that it...
| This DC power supply, whose output voltage can be modulated by an audio-frequency or other LF signal, is intended for such applications...
| This amplifier has been specially designed for use with `alternative energy sources` such as solar cells, biological fuel cells, etc. These...
| Despite the vast array of solid-state devices now available, the flasher units for car direction indicators are still almost exclusively ele...
| The Elektornado is a high-fidelity amplifier offering extremely good performance at moderate cost. The use of an IC for the input and dri...
| Although this power supply is primarily intended for use with the SC/MP system, its general-purpose design renders it suitable for other mi...
| A drawback of conventional integrator cir- cuits (figure a) is that the R-C junction is at virtual earth; this means that C appea...
| Mains frequency is often used as a reference for digital clocks and other digital circuits. Unfortunately problems can arise...