Audio Amplifier Projects

power supply and construction
Following the detailed description of the preamplifierin last month’s instalment, this secondand final part of the article deals with the powersupply and the construction of the completeunit. More so than usual, the power supplyforms an important part of the overall design. Itconsists of 12 NiMH batteries, size AA(RG/HP7) with a nominal capacity […]

This limiter contents owing to their rela-tively low rating, tweeters (high-fre-quency loud-speakers)form theweak linkin an audio sys-tem. If the volume is suddenly turned up too high, the risk of the tweeters being damaged irreparably is high. Such an im-petuous and costly mistake, can, how-ever, be avoided in two different ways. The first is to curb […]

This preamplifier is intended for those audio enthusiasts who are interested in only the best. Its discrete design produces distortion figures that are measured in tenthousandths of a per cent (the remainder of its specification looks very good, too!). Moreover, bearing in mind that in certain areas the mains supply voltage is not as pure […]