Elektor Team (9494)

1-07-1985 | elektor july/august 1985 1110111B.111 moitigie Which amateur film maker has not wished sometime that he could experiment with time exposures...

1-07-1985 | All types of operational amplifier can be functionally checked with the tes- ter proposed here. The principle of the tester is quite simple:...

1-07-1985 | Many electronics hobbyists have crystals lying about, but don"t know whether these are still working all right. The crystal tester described...

1-07-1985 | elektor july/august 1985 before make. Unfortunately, tran- sistors have the property of switching on much faster than switching off. For exa...

1-07-1985 | I p battery charging indicator 41.141 Sealed 6 V or 12 V lead-acid batteries, under normal charging conditions, are charged at a constant vo...

1-07-1985 | 1111.411104111 It is often desirable for a single door- bell to be operated by two bell- pushes, for instance, one at the front door and the...

1-07-1985 | This novel indicator is ideally suitable for use in a discotheque. It consists of eight equi-distant columns of eight LEDs arranged in a sta...

1-07-1985 | elektor july/august 1985 This temperature regulator can be built without special ICs and may be used with powers up to 3.5 kVA. The circuit...

1-07-1985 | The power supply described here uses a silicon-controlled rectifier (SCR) that, depending on the load current, selects taps on the secondary...

1-07-1985 | The BBC micro, one of the best value- for-money computers on the market, can be used for a variety of appli- cations thanks to the various i...