Using a 741 op-amp, this circuit converts a DC voltage into a variable frequency tone. It is the heart of an analog synthesizer. You will learn about integrators and comparators.
You will fire up the and immediately run into a problem: "IC: TCA 240" or "Transistor: BC 108C." Don't panic. 99% of the parts are replaceable. elektor electronics 304 circuits pdf
The 304 circuits are organized into several practical themes: World Radio History Audio & Video : 36 circuits (e.g., amplifiers, mixers). Home & Garden : 36 circuits (e.g., alarms, timers). Hobby & Games : 36 circuits. Test & Measurement : 33 circuits (e.g., testers, meters). Computer & Microprocessor : 32 circuits (includes data on computer chips). Power Supplies : 30 circuits (regulated and unregulated designs). High Frequency (RF) : 19 circuits. Generators & Oscillators : 19 circuits. Car Electronics : 13 circuits. Music/Electrophonics : 9 circuits. Miscellaneous : 41 circuits. Where to Find It Using a 741 op-amp, this circuit converts a
This PDF is a scan of a hardcover compilation published in the late 1980s/early 1990s. It takes the best reader-submitted and editor-tested projects from Elektor magazine—roughly from 1975 to 1985—and crams them into 200+ pages of pure analog magic. You will fire up the and immediately run