Questions tagged [voltage-clipping]

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3answers
107 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 ...
0
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1answer
41 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
151 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: ...
-2
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1answer
57 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 ...
0
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0answers
43 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
39 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 ...
0
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2answers
77 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 ...
0
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1answer
46 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, ...
0
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3answers
481 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 ...
1
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2answers
1k 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 ...
0
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1answer
304 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
955 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
564 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
127 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 (...
-4
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1answer
180 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
634 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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1answer
266 views

Operational Amplifier (UA741) clipping well under voltage rails asymmetrically EDIT: had same issue with different opamp

EDIT 2: I should point out we were having the exact same problem with a OPA2134PA. EDIT: Problem persists up to +-30V and adding parallel resistors to the virtual ground capacitors did not help ...
3
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2answers
199 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
583 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 ...
0
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1answer
890 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 ...
-7
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2answers
401 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)) ...
0
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2answers
301 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 ...
0
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3answers
1k 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
284 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. ...
0
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1answer
551 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?
0
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3answers
315 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 ...
0
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2answers
418 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
3k 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.
1
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3answers
654 views

Is the diode in this circuit connected in parallel with the resistor?

Using the example below my teacher started to explain the parallel clipping circuit. Then he said that the diode is connected in parallel with the resistor but I couldn't understand why, because I ...
0
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1answer
728 views

Signal buffer with op-amp clamping and voltage bias

I'm new to EE and have a question about signal buffering. I'd like to use two brief paragraphs to give some background and context. I live in the SE Asian country-side. Mains supply (230VAC 50Hz) is ...
0
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0answers
296 views

Unity Gain Clipping Circuit

Please see the image below: This is an idea for a unity gain clipping circuit to be used in a guitar effects unit as a 'distortion' pedal. Some percentage of a peak detector output voltage feeds ...
1
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0answers
3k views

Speaker protection using only zener diodes?

It is crucial to match amplifiers to speakers correctly and use them with care. But in some cases you want extra protection from blowing up the speaker. I have thought of a ridiculously simple idea -...
0
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1answer
169 views

How to clip a portion of waveform and pull it to zero level?

I've generated a sawtooth waveform of 5v and i want to allow 1.5v to 2.5 v and rest of the voltage should be detected as zero. I tried using clipper but it didnt get desired result. Is there any ...
0
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3answers
4k views

What frequencies blow out the speaker most?

If you were to put - 5W speaker to 10-15W amplifier which - bass or treble will most likely damage it first? From what I've heard and learned - boosted bass makes speaker move back and forth and if ...
1
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1answer
1k views

Soft diode clipping for 'controlling' amplifier levels and avoiding harsh distortion

The title might be misleading/confusing. I'm building an amplifier with TDA2003 IC's which could be both suitable as a guitar amplifier and as a music amp. Where diodes come into this circuit? As ...
0
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2answers
218 views

Clipping observed across small resistor when attempting to measure op amp output impedance

While trying to measure the output impedance of a follower circuit involving a 411 op amp, I connected a small resistor (27ohm) to the output (at Vout). Using an oscilloscope to measure the voltage ...
0
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2answers
675 views

Non-inverting amplifier clips to unexpected voltage

I'm trying to build a circuit where I control a small DC motor using an Arduino. My goal is to be able to sense the load on the motor, and shut it off or reverse when the load is too high or the motor ...
0
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2answers
647 views

Why do parallel diode clippers work

From a fundamental/general perspective I am looking to better understand why parallel diode clippers work the way they do. I understand in general how parallel configurations work (such as voltage is ...
1
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0answers
147 views

Master-Slave Amp clipping/saturating problems

Building a master-slave amp to drive a piezoelectric driver for a sonoluminescence experiment. Having a problem with the amplification. The rails are at +/- 45 V (sorted that problem out, thanks to ...
0
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3answers
2k views

3.3V ADC protection

I'm using a microphone connected to a TIVA's ADC. The output for the microphone is around 100mV and I used some op-amps to make it work from 0V to 3.3V. However, if the user yell at the microphone, it ...
2
votes
2answers
269 views

viability of idea for low voltage signal clipping (distortion) for guitar effect

I want to create an guitar distortion effect. What I want is a unity gain buffer op-amp that clips the signal. In the drawing below there is a circuit found on this forum here which will clip a very ...
5
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2answers
1k views

Operational amplifier output is asymmetrically clipped

Why would an amplifier output be clipped asymmetrically? I am building a small headphone amplifier using the Texas Instruments TPA6100A2. I have built up the circuit just as in the TPA61002 ...
1
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2answers
4k views

Voltage Clipping with Two Series-Opposing Zener Diodes

Theory Schematic for Voltage Clipping with Two Series-Opposing / Bidirectional Zener Diodes Consider the following schematic for voltage clipping with two series-opposing/bidirectional Zener Diodes \...
5
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1answer
584 views

Reduced output of op amp peak detection and hold circuit

I have used op amp peak detector & hold circuit for finding the peak of voltage obtained from scintillation detector and pre-amplifier. I observed that the observed peak and hold output was ...
2
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1answer
2k views

design: low voltage clamp circuit (0-200mV)

I need a active safety circuit to clamp voltages to the range of 0-200mV, independent of temperature and very precisely. I have simulated, using TINA-TI, 4 precision clamps in series to do this, see ...
1
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3answers
625 views

Design a circuit that would turn off output between two input voltage levels

The circuits for the three stages of input voltage can be drawn easily, but I am confused about how to make the circuit "identify" the voltages. For eg, How can I turn off output exactly between -3V ...
0
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1answer
557 views

Output from amplifier is clipping

I have the following circuit and I want to process the output of the op-amp through an ADC. However, as you can see in the picture the signal is clipping at 1.89 Volts, rather than 3Volts. Why is it ...
1
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1answer
147 views

Is it a good choice to use mbrb1545ct schottky for the 5 MHz signal clipper?

For my application, I need to clip 5 MHz(max) signal to stay within ±0.5 V. I selected two of mbrb1545ct Schottky to clip my signal. I selected Schottky because I think they are faster to turn on and ...
0
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3answers
688 views

jfet preamp output attenuated and clipped on bottom rail when connected to codec

I am currently working on an embedded audio processing system for electric guitar. I have constructed two JFET preamps (left and right channels) based on the j201 transistor using the common source ...
2
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1answer
149 views

Waveform Clipper

I need help solving this circuit. It's supposed to be a waveform clipper and I already simulated it, however I want to know how the circuit works and so far I haven't been able to analyze it properly: ...