More about power (1014)

1-11-1991 | The power amplifier presented is a revamped version of the LFA-150 we published in late 1988. It provides rather less power than its popul...

1-09-1991 | This little circuit, designed and marketed as a kit by ELV, provides a visual warning when the maximum drive power to a loudspeaker is...

1-07-1991 | This little circuit switches off the equipment in your audio rack when this has not produced sound for some time.

1-06-1991 | In this penultimate instalment of the article (which was delayed by circumstances beyond our control), the power supply and the interfaces...

1-06-1991 | VARIABLE A.C. POWER SUPPLY Stabilized and regulated d.c. power supplies are readily available in many shapes and sizes. By contrast, a regul...

1-05-1991 | The power circuit described in this article is used for obtaining a variable direct voltage source from the 50 Hz a.c. mains supply. The v...

1-05-1991 | Power to the bits and bytes! Here is the Mark-II version of the popular BASIC computer we published a few years ago. This time we present...

1-05-1991 | Over the last few years, a variety of low-power Helium-Neon (HeNe) laser tubes has founds its way in into the electronics surplus trade circ...

1-04-1991 | It is an unfortunate but well-known fact that measuring the active power of a mains-powered apparatus can be quite tricky. While non-reactiv...

1-04-1991 | The circuit diagram of the power supply shows that the semiconductor tester has an on-board step-up voltage converter that is powered from...