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is a circuit designed to prevent a signal from exceeding a predetermined reference voltage level. A clipper does not distort the remaining part of the applied waveform. Clipping circuits are used to select, for purposes of transmission, that part of a signal waveform which lies above or below the
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The diode capacitance affects the operation of the clipper at high frequency and influences the choice between the above two types. High frequency signals are attenuated in the shunt clipper as the diode capacitance provides an alternative path to output current. In the series clipper, clipping
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diode) but the clipping voltage can be set to any desired value with the addition of a reference voltage. The diagram illustrates a positive reference voltage but the reference can be positive or negative for both positive and negative clipping giving four possible configurations in all.
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The clipping action can be made to happen at an arbitrary level by using a biasing element (potential source) in series with the diode. In the following diagrams the green plot is the input voltage, the orange plot is the output voltage, and the blue plot is the clipping level voltage.
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A simple diode clipper can be made with a diode and a resistor. This will remove either the positive, or the negative half of the waveform depending on the direction the diode is connected. The simple circuit clips at zero voltage (or to be more precise, at the small
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Clipping may be achieved either at one level or two levels. A clipper circuit can remove certain portions of an arbitrary waveform near the positive or negative peaks or both. Clipping changes the shape of the waveform and alters its
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of the diode can result in clipping onset that is not very sharp. Precision clippers can be made by placing the clipping device in the feedback circuit of an
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Negative peak clipping at a positive voltage. In this circuit, a short circuit output will result in a large current being driven through the diode by
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Positive peak clipping at a negative voltage. In this circuit, a short circuit output will result in a large current being driven through the diode by
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Clippers may be classified based on the orientation of the diode. The orientation decides which half cycle is affected by the clipping action.
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is not a clipper, but the simple diode version has a similar topology to a clipper with the exception that the resistor is replaced with a
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effectiveness is reduced for the same reason as the high frequency current passes through without being sufficiently blocked.
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Robert L. Boylestad, Electronic devices and circuit Theory. 8th
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The signal can be clipped to between two levels by using both types of diode clippers in combination.
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connected between the voltage rails. This can be improved by replacing the lower resistor with a
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Voltage clipping limits the voltage to a device without affecting the rest of the waveform
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Clippers may be classified into two types based on the positioning of the diode.
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stabilising the reference voltage against supply and load variations.
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For very small values of clipping voltage on low-level signals the
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which can function as a mechanical clipper for acoustic signals.
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equal to the required reference voltage. The zener acts as a
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The simplest circuit for the voltage reference is a resistor
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Negative peak clipping at a negative voltage. When
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Positive peak clipping at a positive voltage. When
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A clipping circuit consists of linear elements like
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621:. 2nd Edition. Tata McGraw Hill, 2008, Page 555,
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443:Combinational two-level diode clipper
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168:Clipping circuits are also called
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679:An overview of Clipping Circuits
594:Modern Dictionary of Electronics
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619:Electronic devices and circuits
377:Negatively biased diode clipper
311:Positively biased diode clipper
238:Two shunt diode clipper circuit
34:needs additional citations for
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591:Graf, Rudolf F. (1999-08-11).
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246:are used to clip the voltage V
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193:Positive peak clipper circuit
153:and non-linear elements like
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556:Clipping (signal processing)
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641:, Pearson, 2010, page 163,
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639:Pulse And Digital Circuits
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58:"Clipper" electronics
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230:Zener diode
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159:transistors
131:electronics
597:. Newnes.
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163:capacitors
69:newspapers
572:Rectifier
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264:I-V curve
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