Elektor Team (9517)

1-02-1989 | 64 EE February 1989 TOUCH-KEY ORGAN A simple-to-build, inexpensive, two-octave organ with touch- sensitive keys etched on the printed circui...

1-02-1989 | Tweeters, the high-frequency drive units in a loudspeaker system are often dam- aged by a properly matched and rated power amplifier. This h...

1-01-1989 | FE, ,1989 FACSIMILE INTERFACE FOR ATARI ST by P. Neufeld DB9JG Are you interested in receiving weather charts and press photographs from all...

1-01-1989 | ,a„ay POWER SUPPLIES: AN OVERVIEW The UK power supply business is ex- panding in line with market needs. The total power supply market in...

1-01-1989 | 20 EE January 1989 MIDI CONTROL UNIT Q4 by H. van Bommel The MIDI control unit described here has been baptized `Q4" because it can quadrupl...

1-01-1989 | 28 EE January 1989 OVER PROTECTION The use of some form of over-voltage protection in electronic equipment is often not contemplated until a...

1-01-1989 | IL„ary 1989 THYRISTOR SPEED CONTROL This low-cost circuit gives excellent speed and torque control of series motors rated up to 3500 W as...

1-01-1989 | mute from servo (44-pin OFP or 40-pin OIL) CMOS DECODER demodulation. error correction 8 12S bus / 3 (44.1kHz) DEEM ~~ (44-pin OFP) CMOS STE...

1-01-1989 | 40 AUTONOMOUS I/O CONTROLLER This concluding instalment of the article deals with serial interface hardware at the host computer side, and s...

1-01-1989 | EE 45 January 1989 DESIGN IDEAS The contents of this column are based solely on information supplied by the author and do not imply practica...