| When an older fax machine and a telephone, which share a line. are located in different rooms, an annoying situation may arise. When the...
All items tagged with Electronics and technology (312)
| Most readers will be acquainted with a tone control as found on many audio amplifiers. Such a control normally consists of a potentiomet...
| Standard potentiometers have some unfortunate properties, such as crackling when they get older and unequal tracking in stereo types. A...
| The filter consists of two fourth -order sections in series. Various components in the second section have been given two different valu...
| The Type UGN3140 Hall-sensor from Sprague enables a magnetic- field detector to be constructed that is conspicuous by its simplicity.
| The adaptor enables almost any NiCd charger to work on the reflex principle. It is simply connectect in parallel with a battery when thi...
| A small detector to indicate the present of a pulsating or alternating electric field is easily made from an inexpensive IC, an LED, a r...
| Most satellite receivers provide a direct voltage at their coaxtat output which, depending on the plane of polarization of the set progr...
| The regulator ensures slow turn on of the supply voltage. Starting at 1.25 V it takes 3 s before the full 15 V is available. The maximum...
| Just a few components suffice to provide a car with a visible as well as an audible indication when it is being reversed.