| Although the use of SMDs (sur- face mount devices) is not yet widespread among electronics hobbyists, and the availability of these parts is...
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| EE JULY/AUGUST 1987 by W Teder The basic dynamic character- istic of a chord can be analysed as a fast rising, needle-shaped pulse with a vi...
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| Morse, or CW (continuous wave), is still widely used thanks to the fact that the necessary equipment can be kept relatively simple, and ther...
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| 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...
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| 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...
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| 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....
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| by R van Laake & A Veen This circuit facilitates switching between programmed settings on synthesizers, expanders, and other electrophonic i...
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| EE JULY/AUGUST 1987 Failing to heed the importance of adequately decoupled supply rails is one of the most serious mistakes a constructor of...
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| 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...
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| 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...