Elektor Team (9517)

1-07-1983 | 34 battery economizer 0 83416 H

1-07-1983 | 7-52 july/augu 35 electronics and plant physiology That trees and plants have a soul has been known to plant lovers and gardeners for a long...

1-07-1983 | 36 30 68 60 70 d.c. voltage doubler using a 4049 This simple circuit can produce a d.c. voltage which is approximately twice the supply volt...

1-07-1983 | lektor july/august 1983 v 37 voltage booster regulator There are various ways and means of drawing more current from a voltage regulator IC...

1-07-1983 | stag awake alarm Do you turn over in the morning and then often oversleep? This circuit could prevent you being late for werk, but it can al...

1-07-1983 | IKi anti burgaar Iights Burglars are often grateful for the fact that someone goes on holiday for a couple of weeks and leaves the home unte...

1-07-1983 | 40 A. Scragg mains wiring tester Here we have yet snother simple cir- cuit, consisting of two neon lamps (with built in series resistors) a...

1-07-1983 | 41 very narrow crystal filter Good filters can be expensive and a manufactured one with a band-pass characteristic as good as the circuit de...

1-07-1983 | 42 P. von Berg The output of Nl wilt be logic 1 if a signal between 750. 850 Hz is applied to the inputs of the tone decoders. As long as th...

1-07-1983 | r july/august 1983 43 1~ B. Darnton horse paces simulator In horse riding it is very important to know exactly what the horse is doing with...