Elektor Team (9534)

1-07-1986 | 21 1 car lights monitor L3 = 20turns M van Oosten Ll = 1 Burns L2 = 1 Burns Many traffic accidents are caused by failing car lights. Often,...

1-07-1986 | Since many amateur receivers are fit- tedwithanSmeterthatfunctionsfar from logarithmically, the proposed circuit should be a welcome exten-...

1-07-1986 | EE July/August 1986 "Alea iacta est" (the die is cast, freely) someone said quite a few years ago, and promptly engaged in sundry military a...

1-07-1986 | Despite its neat design and relatively low cost, the Acorn Electron corm puter suffers from an unfortunate lack of I/O support, which is rem...

1-07-1986 | EE 50 July/August 1986 A B Bradshaw 5 line bar generator 0 12V/80 mA 2 20k 6 IC1 IC2a 56p IC2b 37 11 7k 7 4R1P3144 R30 10k 2 I0On • see te...

1-07-1986 | 1262708 alternatives Thanks to the development of an ever expanding range of capacious EPROMs in the 27xxx and 25xxx series, the Type 2708 h...

1-07-1986 | smart LED selector I In this tiny circuit, for use in, for in- stance, a two-lights model railway signal, one of two LEDs may be selected wi...

1-07-1986 | 1 EE July/August 1986 128toilet ventilator control 2V7 Many toilets have a ventilator, which is energized along with the toilet light. Howev...

1-07-1986 | 12V 10 * see text N1...N4 = 1C2 = 4093 N5...N8 = 1C3 = 4030 N9...N 14 = 1C4 = 4050 N15...N20 = 105 = 4049 D1...D12 = LED* (b/ 14 14 16 R 7 4...

1-07-1986 | EE July/August 1986 30 true class B amplifier The quiescent current in this ampli- fier is always nought, so there is no need for zero setti...