Elektor Team (9517)

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...

1-07-1987 | The fast spreading incorpor- ation of CMOS, HC and HCT chips has created a need for voltage regulators with a very low internal drop to enab...

1-07-1987 | 1 R3 This design answers the need for an inexpensive, yet good quality, preamplifier equipped with a tone control section. Fig. 1 shows the...

1-07-1987 | This application of the well- known Type 555 timer is in- tended for model railway en- thusiasts wishing to construct a two-lamp flashing be...

1-07-1987 | EE JULY/AUGUST 1987 This precision rectifier oper- ates from an asymmetrical supply, handles input signals up to 3Vpp and has a frequency ra...

1-07-1987 | This is a downright simple de- sign for an AF function gener- ator that supplies a rectangular and triangular signal, and can be fed from a...