More about power supplies (351)

1-12-1998 | Nowadays, the speech quality on our telephone systems is generally very good, irrespective of distance. However, there are occasions, fo...

1-09-1998 | The circuit described in this article is primarily intended for installing into a PC, to act as a versatile supply for all kinds of experi...

1-07-1998 | National Semiconductor has been producing and designing ICs for use in switch-mode power supplies for many years. The application of the...

1-07-1998 | A National Semiconductor Application switching power supply whose output voltage is appreciably lower than its input voltage has an int...

1-05-1998 | In this article we answered the letters of our readers.

1-03-1998 | The variable power supply described in this article is the latest in a long line of power units published in this magazine over the past...

1-01-1998 | Although the electricity supply will rarely fail in most of the UK, unexpected power cuts lasting several hours are not uncommon in ma...

1-12-1997 | In the testing of circuits, there is sometimes a need for the supply voltage to be switched on at a gjven time or in steps.

1-11-1997 | The magnification of very weak audio-frequency signals is and remains a precarious affair. That is why a microphone amplifier good en...

1-07-1997 | If you are after a small, reliable and inexpensive switch-mode power supply, National Semiconductor's LM257x series of switch-mode power...