| A circuit is described that, controlled by a computer, generates perfect sine wave signals.
More about Design (644)
| A simple function generator is described, which provides rectangular, triangular and sinusoidal waveforms in the frequency range d.c.-1 00...
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| The detector makes sounds at frequencies of 10-300 kHz audible to human beings. The conversion is ca ried out either by a superheterodyne...
| Sun blinds, whether of the traditional awning kind or of the modern metal roller type, provide welcome shade in the summer and , in the ca...
| A switch, based on a PIC(1) RISC(2) processor, is described that enables mains-operated equipment, such as a computer, a coffee maker, or...
| The power that can be obtained from a standard car radio amplifier operating from a 12 V car battery is 5-6 W, which (for many listeners)...
| Wideband antenna design is problematic because size and performance are conflicting aspects. The wideband antenna described in this articl...
| Musicians appear to have a predilection for connections, as witness the myriads of cables that can be found around and on the stage when a...
| Computers have evolved rapidly over the past few years, and are now used for design work that was long thought to be possible by hand only....