| The pulse width of the compact pulse cum frequency modulator can be varied by altering the change-over point of comparator IC1 with a co...
Ton Giesberts (354)
| This little circuit will be valued highly whenever a signal is required for the testing of infrared receivers. In most cases, such a tes...
| Over the years, infrared remote control units have become better designed and more reliable. They retain a few weak facilities, howeve...
| When in 1870 John Tyndall, an Irish physicist working in the USA, showed that light can be guided, he could not have foreseen that li...
| An annoying phenomenon (not restricted to PCs) is that each and every programme that produces sound does so at a different level. Thi...
| Strictly speaking, a trinket cannot be functional, but the title of this article is apt. It is a kind of miniature VU meter whose LED...
| There are occasions when it is desirable or even essential for a stereo microphone to be connected to a personal computer. Unfortunately,...
| When a phorodtode is illuminated, it produces a significant photocurrent whose value depends on the level of illuminance.
| As the name indicates, the selector is intended to chcose one of up to eight digital audio signal Inputs, which it does with the aid of a...
| The circuit described in this article is eminently suitable for those who appreciate comfort as well as sound quality. In the circuit...