All items tagged with technology and Power (21)

1-12-1994 | Switching on inductive loads, such as transformers, causes a very high initial current, because at that instant, the load does not produ...

1-07-1994 | A battery of solar cells can recharge a NiCd battery with better than 80%, efficiency, provided the solar battery voltage exceeds the fu...

1-12-1993 | The lamp in slide projectors is normally controlled with the aid of a triac in series with it. This method reduces the brightness of the...

1-07-1993 | The aim of the design of this 'zener diode' is to obtain a fast voltage regulator that can provide high currents. The circuit is based on...

1-06-1993 | Since the early 1890s, man has pioneered the technique of converting wind power into useful electricity. The development of engineering s...

1-11-1992 | The high consumption of electrical energy, prompting fears of exhausting traditional fuels used by power generating plants, has paved the...

1-07-1992 | When the Atari ST is provided with an external hard-disk drive, it has to be reset after about 15 seconds, as otberwise the drive is not...

1-12-1991 | The power supply for this analogue circuit that affords delays of 330 seconds is taken directly from the mains. The direct voltage at the...

1-12-1990 | It happens frequently that the output current of an operational amplifier is inadequate for the application as, for instance, whent a sma...

1-07-1990 | In most variable power supplies, the correlation between the setting of the wiper of the relevant potentiometer and the output voltage is...