| Oxygen makes up about 21 % of the air in the atmosphere. Normally we take this for granted but for some, oxygen concentration can be a matte...
More about Portable (80)
| These days we all carry a whole array of portable devices along with us. Very handy, but those mobile phones and MP3 players have to be rech...
| With personal PA systems there’s a fairly good chance of feedback howl. This occurs when the headset microphone picks up the sound from the...
| For the solar panel test, which was published in the July 2009 issue, we also asked for a number of smaller solar panels. These small panels...
| Especially with somewhat longer trips, a portable solar panel can come in very handy to ensure that you always have enough power for your mo...
| The small circuit described here is very easy to use and consumes so little current that it will work for the battery's shelf life. The...
| A multimeter is the standard measurement tool for every electronics hobbyist. You can use them to measure voltages, currents and resistances...
| The MP3 format took just a few years to become an important standard in the music industry. Today, MP3 players come in many brands and model...
| Portable MD recorders continue to be popular. Among other things, they allow titles to be entered, in order to make it easier to find disks...
| Portable MD recorders have remote controls for the most commonly used functions. The term ‘remote control’ usually refers to a wireless TV z...