Elektor Team (9512)

1-07-1987 | Morse, or CW (continuous wave), is still widely used thanks to the fact that the necessary equipment can be kept relatively simple, and ther...

1-07-1987 | This AF oscillator can be built with only one active compo- nent, and draws so little current that it is conveniently fed from a 9 V (PP3) b...

1-07-1987 | 48 from an idea by R Shankar When designing oscillators, it is good practice to ensure minimum capacitance of the active element(s), since a...

1-07-1987 | EE JULY/AUGUST 1987 by C Sanjay In many cases it may be necessary to switch between two or more aerials with minimum loss in the RF signal....

1-07-1987 | by R van Laake & A Veen This circuit facilitates switching between programmed settings on synthesizers, expanders, and other electrophonic i...

1-07-1987 | EE JULY/AUGUST 1987 Failing to heed the importance of adequately decoupled supply rails is one of the most serious mistakes a constructor of...

1-07-1987 | From an idea by R de Haan This circuit activates a relay upon detecting the absence of light on an LDR (light depen- dent resistor). It is p...

1-07-1987 | 52 The majority of MSX computers do not require a BUSDIR (bus direction) signal from add-on circuits plugged into slots. A problem arises, h...

1-07-1987 | Simultaneously monitoring the trends of 8 slowly varying voltages is normally very diffi- cult, if not impossible, even with the aid of 8 an...

1-07-1987 | by H Gulitz The use of comparator circuits in many different appearances and practical realizations is common in a wide variety of electroni...