A basic astable multivibrator circuit is a type of oscillator circuit that continuously oscillates between two states without external triggering. It uses two transistors, capacitors, and resistors to generate a square wave output.
Here's how it operates:
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Initially, one transistor conducts while the other is off. The conducting transistor charges one capacitor while the other capacitor discharges.
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As the charging capacitor voltage reaches a certain threshold, the first transistor turns off and the second transistor turns on.
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Now, the roles are reversed, with the second transistor conducting and charging its capacitor while the first transistor discharges.
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This cycle continues, causing the circuit to oscillate between the two states, generating a continuous square wave output.
In this configuration, the timing components (resistors and capacitors) determine the frequency of the oscillation. The astable multivibrator circuit is commonly used in applications like clock generators, signal generators, and tone generators.
