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Step 2How It Works
The circuit for the Atari Punk Console is shown in Fig. 1. The circuit consists of a 556 dual-timer IC (equivalent to a pair of 555 timers) and half a dozen other parts.
In operation, the first timer is connected as an audio frequency oscillator and the second as a monostable multivibrator. The oscillator drives the monostable, which emits square output pulses with a duration controlled by R3. You have to actually hear the end result to fully appreciate the stepped tones that are generated as R1 and/or R3 are adjusted.
R1 controls the frequency of the audio oscillator. R2 controls the output pulse duration of the monostable multivibrator. R4 is an optional volume control that can be deleted by connecting the speaker directly to C3.
In operation, the first timer is connected as an audio frequency oscillator and the second as a monostable multivibrator. The oscillator drives the monostable, which emits square output pulses with a duration controlled by R3. You have to actually hear the end result to fully appreciate the stepped tones that are generated as R1 and/or R3 are adjusted.
R1 controls the frequency of the audio oscillator. R2 controls the output pulse duration of the monostable multivibrator. R4 is an optional volume control that can be deleted by connecting the speaker directly to C3.
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