Questions tagged [voltage-clipping]

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2answers
118 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
42 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
43 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
25 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 ...
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1answer
21 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
47 views

Transfer characteristics of circuits involving op amp with diodes

How should I approach such questions?
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3answers
121 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 ...
1
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2answers
82 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
67 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 ...
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3answers
151 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
47 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
164 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
59 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
63 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
77 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
97 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
59 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
535 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
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 ...
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1answer
343 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
633 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
135 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
204 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. ...
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1answer
693 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
289 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
213 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
623 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
433 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
311 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
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 ...
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1answer
307 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
568 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
345 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
478 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
4k 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.
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3answers
728 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
775 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 ...
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0answers
305 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 ...
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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
172 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 ...
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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 ...
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1answer
2k 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 ...
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2answers
231 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 ...
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2answers
739 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 ...
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2answers
669 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 ...
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0answers
165 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 ...
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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
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2answers
278 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 ...