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| Designing printed-circuit boards that may be safely connected to the mains supply need not give rise to unnecessary worries. A condition i...
| The three voltages of a threephase supply, L1, L2 and L3 (or R, G and B) are 120° out of phase with one another. When, for instance, the...
| In many home-brew AF power amplifiers, including quite a few built according to the noble art of ‘high-end audio amplifier construction’,...
| The pulser is intended to switch the mains voltage on and off at intervals between just under a second and up to 10 minutes. This is use...
| The mains filter described in ‘PC Topics’ (April 1998) could do with two useful additions: a fuse monitor and a voltage indicator. The f...
| Being an all-solid-state design you don’t have to tap on this barometer to get the latest air pressure reading!
| Although you may well be the proud owner of the very latest NiCd battery charger, you may still come across the odd 'incompatible' batte...
| The article on CD-R formats in this month’s Supplement discusses the main formats and features of the CD-R and CDRW. If you want to k...
| If you employ several networked computers, you probably don’t have enough desk space, since most of the system components are duplicated o...