Elektor Team (9505)

1-07-1987 | EE JULY/AUGUST 1987 After a longish absence from the semiconductor scene, the tunnel diode, also called Esaki diode, after its Japanese inve...

1-07-1987 | Although the use of SMDs (sur- face mount devices) is not yet widespread among electronics hobbyists, and the availability of these parts is...

1-07-1987 | 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...

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...