All items tagged with power and power supplies (242)

1-07-1992 | The best known alternatives to a 'quick and dirty' power supply are tbe three-pin flxed voltage regulator and the zener-plus-transistor...

1-06-1992 | A small circuit is described that inverts a positive voltage into a negative one or doubles its level. It does not use inductors and is ba...

1-05-1992 | The proposed mains power supply is a versatile unit for use where a stable voltage, medium power and good parameters are required. The qu...

1-05-1992 | The greater part of this month's instalment is devoted to the operation of the microprocessorcontrolled synthesizer used to tune the RF...

1-04-1992 | This second part of the artide was originally intended to deal with the adjustment of the main tuner board only. However, following many...

1-03-1992 | How do you know whether your precious laboratory/workshop power supply unit is still working to specification? How do you measure the para...

1-02-1992 | A reliable, sturdy switch-mode power supply is not the easiest of electronic circuits to design, as many of you may have found out the...

1-12-1991 | In most personal computers, the power supply provides +5 V and ±12 V lines. The positive 12 V line is needed for the disk drives, and the...

1-12-1991 | The regulated power supply and four identical current sources shown in the diagram enable the simultaneous charging of four 9-volt NiCd b...

1-12-1991 | One instrument no electronics hobbyist can do without is a regulated power supply. This month we present a no-frills design that should...