Questions tagged [voltage-clipping]
The voltage-clipping tag has no usage guidance.
68
questions
2
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
vote
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
votes
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
votes
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
vote
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
vote
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
votes
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
votes
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
vote
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
votes
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
votes
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
vote
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
votes
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
votes
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
votes
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
vote
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
votes
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
votes
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
vote
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
votes
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
votes
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
vote
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
votes
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
vote
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
votes
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
votes
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: ...
