| The ban on subliminal advertising has led to a wider interest in this unusual psychological .. phenomenon. The following circuit offe...
| The ban on subliminal advertising has led to a wider interest in this unusual psychological .. phenomenon. The following circuit offe...
| This article provides a program for the HP-65 programmable calculator from Hewlett-Packard with which it is possible to determine, and...
| Headphones have long been popular with hi-fi enthusiasts, since they provide good-quality reproduction at a fraction of the cost of loud...
| The infra-red receiver and multiplex decoder are the heart of the car electronics. The servo amplifier and speed controller cannot oper...
| The `Biorhythm` theory offers an explanation for the occurrence of emotional `ups` and `downs`. This article offers a TTL circuit for ca...
| The ioniser produces a high concentration of negative ions in the surrounding atmosphere, which many people find stimulating and refre...
| Various circuits for touch switches have been published in Elektor, and many readers have asked for constructional details of touch...
| The voltage controlled oscillators (VCOs) are the heart of any synthesiser. The quality of the VCOs ultimately determines the performan...
| Last month`s article provided a brief outline of the development history of computers and their basic architecture. It was intended to...
| Wherever possible in Elektor circuits, transis• ton and diodes are simply marked `TUP` (Transistor, Universal PNP), `TUN` (Trans...