More about power supplies (359)

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...

1-07-1997 | At the heart of this power supply is the type 723 voltage regulator. Despite its age, the 723 is still popular among radio amateurs becau...

1-04-1997 | Electronic circuits have at least one thing in common: they need power to operate. The power supply described in this article has bee...