Preamplifier and Filter Circuits: 309 (BP S.). This item is unavailable.Preamplifier and Filter Circuits: 309 (BP S.)

This handbook provides circuits and background information for a range of preamplifiers, plus tone controls, filters, mixers etc. The use of modern low noise operational amplifiers and a specialist high performance audio preamplifier i.c. results in circuits that have excellent performance, but which are still quite simple. All the circuits featured can be built at quite low cost (just a few pounds inmost cases). The preamplifier circuits featured include: microphone preamplifiers (low impedance, high impedance, and crystal), magnetic cartridge pick-up preamplifiers with R.I.A.A. equalisation, crystal/ceramic pick-up preamplifier, guitar pick-up preamplifier, tape head preamplifier (for use with compact cassette systems); other circuits include: audio limiter to prevent overloading of power amplifiers, passive tone controls, active tone controls, PA filters (highpass and lowpass), scratch and rumble filters, loudness filter, volume and balance controls. No construction details are provided for the circuits featured in this book, and it is not really intended for complete beginners. On the other hand, the circuits are all pretty simple, and you do not really need much previous experience of electronic project construction in order to tackle them. Where appropriate, any setting up procedures and notes on tricky aspects of construction are provided.