ELEKTOR No. 003 - sept-oct 1978

ELEKTOR magazine issue 003 from September-October 1978 covering a diverse range of practical electronics projects and technical content. This issue includes a stereo mixing table designed for discotheque use, a peak audio-frequency voltmeter with logarithmic scale, and a universal note generator for electronic piano and organ circuits. Featured projects span from a modular electronic piano build to a TTL logic tester, a square wave to staircase converter, and an FM transmitter pen design. The issue also provides part three of the SC/MP microprocessor tutorial series, semiconductor product announcements, and pricing from major European electronics suppliers including Magnetic-France, BERIC, TEVELABO, Selectronic, Elektronikladen, and Fanatronic. Additional highlights include an LED voltmeter using the UAA 180 chip, a lighting fault indicator, a TUP-TUN tester, and the Elektor Software Service section. This magazine serves as both a reference resource and a hands-on guide for electronics enthusiasts and technicians working with audio circuits, logic systems, and microprocessor applications during the late 1970s computing era.