More about portable (80)

1-09-1997 | Many model craft are powered by 12 V rechargeable batteries. Often, it would be a godsend if these batteries could be charged by a...

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...

1-03-1997 | Mobile communication has taken the world by storm, with unprecedented acceptance by the general public. A few years ago, a carphone would se...

1-12-1996 | Modern organizers, portable databanks, and mini computers are often considerably more than ingenious devices for playing games. They bec...

1-09-1996 | The market for micraelectronic equipment is growing at a seemingly ever-increasing rate. After the era of discrete semiconductors, it i...

1-07-1996 | The advantage of a touch witch over a traditional, mechanical, witch is that its operation is not degraded by wear and tear.

1-11-1995 | A new type of test instrument, the portable digital storage oscilloscope (OSO) has appeared on the electronics scene, and looks here to...

1-05-1995 | From the World of Electronics

1-12-1994 | Transistorized RF power amplifiers and mobile transceivers require mains power supplies capable of supplying very high currents while rema...

1-12-1994 | Portable CD players have anannoying drawback: their current drain is so high that even rechargeable NiCd batteries. let alone dry types,...