audio generator circuits
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Triangle Wave Generator
Jan 13th
This triangle wave generator is made with a trigger Schmitt that converts a triangle wave into a rectangular one used to charge and discharge a capacitor through current sources. The positive current source T1 provide the charging and T2 the discharging. The trigger Schmitt is made from OR-EXCL gates IC1a and IC1b. (more…)
Audio frequency generator
Sep 27th
This audio frequency generator is a triggered signal generator. When a positive pulse of about 6 volts (minimum) is fed to the circuits input , a modulated audio signal comes out of the output. The signal pattern is similar to a bird’s chirp. The pulse width of the trigger signal must be a minimum of 2.5 miliseconds. The voltage supply is between 9 volts and 20 volts. The circuit consumes about 2 mA or less. If the circuit is apllied as a morse code signal generator, replace C1 with a 0.1 μF capacitor. (more…)
Sawtooth Generator Circuit
Sep 22nd
This sawtooth generator circuit is used as a musical sound synthesizer. The sawtooth input signal is continously changed through P2 to a waveform with a doubled frequency and half amplitude. IC1 functions as a comparator and forms the sawtooth to a squarewave signal. IC2 serves as a adder. (more…)
Signal generator with thyristor
Jun 19th
A very simple thyristor signal generator circuit which uses a single thyristor, two resistors, a capacitor and a mini-loudspeaker. Once the circuit is switched ti a current source, current flows through R1 and switches on the thyristor. The thyristor conducts current and chargers capacitor C. (more…)
High Frequency Generator
Jun 12th
High frequency waveform generator is very useful in electronic experiment and design. This circuit generate sine wave oscillation, but actually we can modify the circuit to generate triangle or square wave function. The core of this waveform generator is MAX038. This integrated circuit chip gives complete function to build a waveform generator/function generator. (more…)
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