Elektor Team (9510)

1-07-1989 | 003 CAR ELECTRONICS A defect car light is at best a nuisance and at worst a danger. Fortunately, most new cars are equipped with suitable mo...

1-07-1989 | Otherwise properly mixed sounds often suffer from a predom- inant solo voice (which may, of course, be the intention). If such a voice needs...

1-07-1989 | 005 POWER BOOSTER FOR 7406/7407 It often happens that a digital signal is required for controlling a relay, a stepper motor, or other kind 1...

1-07-1989 | 006 POWER SUPPLIES When a voltage regulator is supplied from a mains adapter, it sometimes happens that its output is too low (because the o...

1-07-1989 | The radio beacon band extends from 280 kHz to 516 kHz. Each beacon has its own characteristic AM modulated morse-coded call sign that is tra...

1-07-1989 | 8 008 TEST & MEASUREMENT Although the NE604 is, strictly speaking, intended primarily for h.f. applications, it may be used for a number of...

1-07-1989 | 009 RECORDING CONTROL AUDIO & HI-FI The circuit presented here is intended as a recording level control for cassette recorders. It enables t...

1-07-1989 | 010 CHILD-PROOF RESET SWITCH The reset switch on a com- puter is a very important con- trol. If an operating instruction threatens to wreck...

1-07-1989 | 10 011 GENERAL INTEREST Battery-operated equipment can work on one set of batteries for a long time nowadays. But if it is left on inadverte...

1-07-1989 | 012 The TL496 is an is that is intended to produce a nominal 9-volt, that is 7-10 V, supply voltage from a variety of sources. This sup- ply...