Questions tagged [voltage-clipping]

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78 views

Why is my clipping circuit involving 1N5819 Schottky diodes in my radar receiver not working?

I have built the circuit shown below and been testing it on a breadboard. Everything works except the positive half clipping circuitry. I need it to clip after 3.3V. It currently just clips below 0V, ...
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1answer
60 views

clamping the amplitude of a wave to certain level

I'm trying to prevent a wave form from exceeding 10V.p.p. I tried various things, but ... what the correct way to do it? this clamps a 11V signal to +/- 900 mV ... and converts a triangle to square. ...
3
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1answer
127 views

How can I clip voltage faster?

I have this test circuit, which has this signal: V1 may change from 1 to 30 V, V2 may change from 0 to 4 V peak to peak. I need to clip the signal at about 3 - 4 V to feed it to an Op Amp, which has ...
3
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1answer
113 views

Zener diode, clipper circuit

This is the original assignment. My solution attempt is below that. Explain the output expected from the following circuit and also identify the name of circuit. (Where VZ is Zener voltages for ZD1 ...
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3answers
320 views

Clipping when using a CD4051 analog multiplexer

Regarding the CD4051 analog multiplexer, Data Sheet If I connect VDD to +5 V and VSS, VEE to GND. The analog signals are coming from modules with the analog signal having a DC offset that can be as ...
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1answer
57 views

Clarification on a clipper circuit

I'm reading a paper whose result I am trying to replicate. One of the circuit elements is a clipper circuit as shown below. This is a very straight-forward circuit. The positive value is limited to \$...
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3answers
127 views

Why isn't there any clipping in this diode circuit?

This is the circuit. This the input and output graph:
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1answer
55 views

Properties of Waveform Clipping

I just completed (and submitted) a recent lab report in an electronics class on op-amp circuits. The only implementations of the op-amps so far are in the inverted and non-inverted form. While ...
2
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1answer
343 views

Why do I have clipping in this emitter follower

I am trying to design a class A amplifier buffer stage (I know it is not efficient.) I am starting from the simple emitter follower and the next step is to replace the RE resistor with a current ...
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1answer
278 views

Diode alternatives for LTspice

I am using LTspice as opposed to P-spice because I have a Mac. I've been asked to simulate a circuit using 1N914 and 1N4729 diodes, but LTspice doesn't have those diodes. What are equivalent diodes to ...
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1answer
28 views

Design a circuit in Ltspice based on the input and output

I need to design a circuit that takes a sinusoidal input with peak of 8V and generate an output such that the positive peaks remain the same and the negative peaks get inverted and have a peak of 4V.
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2answers
93 views

Output Stage Clipping

I'm playing around with the circuit below (it's a very slimmed down version of Figure 11.10 from High Power Audio Amplifier Construction Manual pg 348) Can anyone explain what it is in the circuit ...
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2answers
368 views

BJT Common Emitter Clipping

Following on from my last question Cascaded BJT Amplifier Load - I'm trying to understand what it is (via math or otherwise) that causes the input signal to appear malformed when the output of the ...
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2answers
444 views

Voltage multiplier does not work

I have a built a simple voltage doubler. the circuit is as below: simulate this circuit – Schematic created using CircuitLab This represents only one stage, and my circuit has 4 stages. The ...
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0answers
70 views

Signal clipping in cascade transistor amplifiers

The two-layer voltage amplifier circuit can transfer a signal of up to Vi = 50 mV to the output without clipping.and 1st stages gain Av1=-6.41 . +15 volt is ...
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0answers
58 views

clipper question with non-ideal diodes

Vo for the clipper circuit where Vi = 10sin (6280t) and diodes are 0.6 volts. I think the simple form of the circuit is like this. if we don't calculate the resistors. Could the output signal be ...
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0answers
43 views

High voltage high frequency clipper

I want to measure the frequency of a signal around 200khz (max) and the voltage may vary from 10v to 200v peak-peak. I will have only a constant voltage at the time of measurement. Not varying. So ...
1
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1answer
89 views

Input Voltage vs Output Voltage for a Shunt Positive Clipper with Bias Voltage

Assume voltage drop across diode is 0.7V in this case. From what I understand When V(input) is positive, but less than 0.7+V OR When V(input) is negative AKA When the diode is acting as open circuit:...
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1answer
95 views

Transfer characteristics of circuits involving op amp with diodes

How should I approach such questions?
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3answers
147 views

Turning on an automotive relay when enough voltage is avaialble

I'm trying to drive a relay off a dome light in a car, where the dome light fades in smoothly. That is, say, I have a constant ground and the other wire goes from 0 to 12V (up to 14V) over a couple ...
2
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2answers
221 views

Active clipper terrible performance

I need a clipper for a 10 kHz signal to protect an ADC from possible overvoltage. I'm using the usual active circuit (simulation is in multisim): Unfortunately the result is very bad, the opamp is ...
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1answer
197 views

Need op-amp "window clipper", clipping below and above some range of DC

I need to design a kind of window clipper. It should work like this: Conditions: Vin: 0-6 V, Vout: 0 V Vin: 6-8 V, Vout: 0-3 V Vin: 8-10 V, Vout: 3 V There are some example values, I need to be ...
2
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3answers
386 views

Why does the positive wave of my class AB amplifier output get clipped far below rail voltage?

For the past 6 months I've been designing and building a 30W 3MHz audio modulated Tesla Coil driver. For this, I've created a +-15V linear regulated power supply, an AM modulator using an MPY634, and ...
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1answer
67 views

Need help with theremin oscillator

I'm having trouble getting my colpitt's oscillator to give me nice sinusoids. It seems to be clipping the output for for reasons I don't understand. The circuits needs to oscillate at 7MHz (Body ...
4
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1answer
189 views

Need help designing and implementing an op-amp based distortion circuit

I've been attempting to design a distortion pedal for use with my bass guitar and amplifier. The simulations in LTspice were promising, I moved to implement it and, in short, it did not work. Note: ...
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1answer
71 views

How can I change transfer function slope after a certain point?

I need to design a circuit for the following transfer function. I've tried using biased parallel clippers, but the only thing I've managed to do is clipping the output at 5V i.e the slope becomes ...
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0answers
159 views

Sine wave clipping before rectifier when wire resistance is added at secondary of transformer in LTSpice

I'm simulating 4 different circuits, they are all power supplies, with loads, filter capacitors, rectifiers made by four 1N4007s, and transformers fed from 120VAC: They all have the same problem, ...
2
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0answers
162 views

Max Input Voltage for a BJT amplifier

I have built a BJT amplifier and I have a function generator connected to the input of my circuit. I have also connected both channels of an oscilloscope to the input and output of my circuit. I need ...
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2answers
174 views

Increasing diode clipping influence

I'm working on a guitar pedal distortion circuit and I've been experimenting with introducing diode clipping into the signal. My question is, how can I increase the influence this diode clipping has ...
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1answer
115 views

Can I take the voltage across diode to be same as the input voltage in a limiting circuit?

My doubt is a trivial one, can I take VD1 and VD2 to be V1? If so doing that doesn't make sense to me 'cause when the current flows VD1 is certainly not equal to V1. This isn't a Homework question, ...
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3answers
802 views

Confusion regarding Biased Clipper Circuit

When the voltage is lower then the biased voltage its appear in Output Voltage, But just when the voltage get larger than Bias Voltage (Vb) the Diode start Conducting and its acts as SHORT and the ...
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2answers
2k views

How to turn an LM741 op amp into a distorted portable guitar amplifier?

Here is my circuit (to the best of my recollection): simulate this circuit – Schematic created using CircuitLab NOTE: The voltages and resistance values are not known to me and what you see in ...
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1answer
605 views

clipper circuit in multisim

I have got a clipper circuit as shown in the pic .I am confused why there are two differnt waveforms in two halves (separated by the red vertical line). And what is the actual waveform we obtain ...
3
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3answers
1k views

Clipper circuit: Why some of the portion of the positive input cycle remains un-clipped due to the diode cut-in voltage

I understand that when the input waveform is positive, the diode does not conduct hence the positive half cycle of the input waveform gets clipped. Also, when the input waveform is negative, then ...
1
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3answers
925 views

Why does voltage stay the same regardless of resistor connect to the source

I'm learning about clipping circuits, and I have hit a road block with my understanding of one particular problem. The circuit in question is a serial limiter. My issue is why does the output voltage ...
3
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2answers
202 views

How can I see if my filterless class-D audio amplifier is clipping or not?

So I'm using MAX98357A, which is a filterless class D audio amplifier. I'm running it using Vcc = 5 V. Looking at the page 28 of the datasheet, I see the folliwing formula for output voltage: Output (...
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1answer
276 views

Lower the voltage on a 5V PSU to 4.9V

I've been working on a mostly software based project that includes an addressable LED strip. I am powering the strip with an old ATX PSU and the LEDs seem to be vely unstable when at low brightness. ...
0
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1answer
897 views

Causes for Saturation in Transimpedance Amplifier Circuit

I have a transimpedance amplifier circuit with a Silicon Photomultiplier as shown below: simulate this circuit – Schematic created using CircuitLab We're using the SensL MicroFJ-60035 Silicon ...
3
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3answers
417 views

Op amp clipping well under voltage rails asymmetrically

I've been trying to figure out what looks like a clipping issue in the linked circuit. Our input is a 8 kHz 120 mV sine voltage signal coming from an AD9850. We are trying to amplify it to a 5V signal....
3
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2answers
240 views

What are some causes of amp clipping aside from those related to exceeding the rail voltage

I often encounter problems where an amp may exhibit clipping despite the input signal being well below the rail voltage. I understand that there are numerous problems that cause this. However, what ...
4
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1answer
736 views

Replace transistor used as diode

in the schematic on page 5 of this document: The note says: T2a is connected as a diode (clipping diode) to protect the power source against higher Vcc voltages. I assume from this I can ...
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1answer
1k views

Over-voltage protection for microcontroller ADC input pin.

I have a microcontroller with a 3.3v ADC input and I want to protect it from over-voltage. My microcontroller already has some input protection diodes but I don't want to rely on them alone. This ...
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2answers
566 views

Rail-to-rail op amp clipping well below rails [closed]

I'm using a rail-to-rail op amp (LM6132) with its power rails at -5V and +5V, connected to a function generator. I expect to be able to give it a maximum signal of 10V peak-to-peak ((i.e. -5V to +5V)) ...
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2answers
338 views

Unconventional Op-Amp Clipping

I have been scratching my head for a few weeks about the behavior of my circuit (attached). In this circuit I give a arbitrary known input signal to drive a current through R1 which is a thermistor. I ...
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3answers
2k views

Internal clamping circuit at the input pins of an MCU

I understand that the internally two diodes exist at the input of a microcontroller and one end of it is connected to Vdd and the other end of the second diode is connected to ground and when the ...
0
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1answer
371 views

Clipping of a negative feedback amplifier

I need help solving the following exercise from my book. I am not very knowledgeable in analyzing biasing circuits but I have understood the following: \$R_1\$ and \$R_2\$ are feedback resistors. ...
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1answer
601 views

Transfer characteristic of circuit

I'm trying to find out the transfer curve (Vin Vs Vout) of the circuit given below. I approached this way: Is it the right curve?
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3answers
449 views

DC sweep analysis not matching transient analysis for amplifier

I'm building a little sound amplifier for something and can't quite understand why it's not a powerful as I though it might be. This is the circuit, and a simulated DC sweep is shown below:- Vdrive ...
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2answers
612 views

Clipping negative voltage with resistor divider as load

I have a dual-supply op-amp (±12V) that outputs a signal in the range of ±3V. I cannot neither change the op-amp configuration nor add another one. Please not the schematic below is just an example. ...
2
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1answer
5k views

What is the role of zener diode in this clipper circuit?

i don't know exactly why we're adding the zener diode. My guess would be that it functions as a voltage regulator but that's as far as i can go.