All items tagged with phone and Microphone (37)

1-02-2005 | When the ISM frequency band was made available in Europe for audio applications, Circuit Design, a manufacturer of professional RF modules,...

1-12-2003 | A number of years ago (November 1997), we published a design for a stereo microphone preamplifier with balanced inputs and a phantom power s...

1-11-2003 | The directional microphone published in the July-August 2002 issue of Elektor Electronics does its job, but does not have the right directio...

1-07-2003 | Here is a very simple, inexpensive and interesting project which provides lot of fun to a home experimenter or hobbyist. This simple transmi...

1-04-2003 | Commercially-produced subsonic microphones are too expensive for the cost-conscious user. However, as long as a high-precision measuring dev...

1-02-2003 | In this semiconductor age, we find valves being used increasingly often for hi-fi and guitar amplifiers, top-end condenser microphones and s...

1-07-2002 | Compared to the other instruments in a band the mouth organ is often not loud enough. Turn up the amplifier, and you risk feedback. What is...

1-07-2000 | The signal from a microphone is two weak for a standard line input. This low-noise DC-coupled microphone amplifier provides a solution for a...

1-12-1998 | Most soundcards have a ‘line’ input and one for an electret (condenser) microphone. To be able to connect an inductive tape-recorder head...

1-07-1998 | The preamplifier is intended for use with dynamic (moving coil – MC) microphones with an impedance up to 200 Ω and balanced terminals. I...