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Q130 Clipper/Rectifier

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Q130 Clipper/Rectifier Module

The Q130 Clipper/Rectifier Module provides both a signal rectifier and a voltage controlled clipper. These functions have the effect of changing a waveform and its harmonic content or simply changing a control signal for use by another module.

The Clipper section of the module is used to clip off the top, bottom, or both of a waveform. The level at which the clip occurs can be set manually with the front panel control knob or set with a voltage control signal from another module. The amount of effect that the voltage control signal has can also be adjusted.

The Rectifier section simply takes an input and rectifies it. This has the effect of doubling the frequency and adding harmonics to a sine wave, while turning a sawtooth wave into a triangle wave. Both positive and negative sides are available simultaneously.

Patch the two sections together to create completely new types of waveforms.

Q130 Clipper/Rectifier Graphic
$92.00 USD
  • DR Wrote: The Q130 Clipper/Rectifier module is everything it's billed to be. It was one of the last modules I added to my system and I should have added it sooner. The ability to create thicker waveforms and envelope shapes is incredible! Thanks Roger.
  • Panel Size: Single width 2.125"w x 8.75"h.
  • Input Signals: 10V PP, DC to 20khz
  • Control Frequency: 1khz maximum
  • Power: +15V@2ma, -15V@2ma

The clipper section can be used to limit the amplitude of a signal and to create unusual sounds by adding harmonic content through changing of the waveform. Clipping levels can be controlled with an oscillator or envelope generator to create interesting effects.

It's important to remember that the clip level control and the clip input jacks are mixed together to create a clipping voltage. The 'amount' control attenuates the clip level input voltage from its full level down to zero depending on the knob's position. Viewing the results with an oscilloscope will help you understand the function and interaction of these controls.

The rectifier has the effect of taking the bottom of the waveform (the part below 0 volts) and flipping it to the top. When a sawtooth or ramp wave is used as an input, the output will become a triangle wave of the same frequency which is level shifted. When a triangle waveform is used as the input, the output will be triangle at twice the frequency. When a sine waveform is used as the input, the output will be a waveform with unusual harmonic content at twice the frequency. When a square or pulse waveform is used as the input, the output will be only be a small spike which has minimal usage.

Patching the output of the clipper into the input of the rectifier can create a whole new group of waveforms in which every other cycle is clipped.

See how to create envelope PUNCH using the Q130 Clipper.

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