Questions tagged [voltage-clipping]
The voltage-clipping tag has no usage guidance.
83
questions
0
votes
0answers
22 views
Diode clipper circuit input output graph [closed]
Can someone explain to me how to draw the input output graph for the circuit?
2
votes
1answer
234 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 ...
0
votes
1answer
78 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 ...
0
votes
1answer
26 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.
1
vote
2answers
88 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 ...
0
votes
2answers
112 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 ...
0
votes
2answers
219 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 ...
0
votes
0answers
55 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 ...
0
votes
0answers
48 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 ...
0
votes
0answers
35 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
vote
1answer
38 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:...
0
votes
1answer
72 views
Transfer characteristics of circuits involving op amp with diodes
How should I approach such questions?
2
votes
3answers
130 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
vote
2answers
128 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 ...
-4
votes
1answer
112 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
votes
3answers
240 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
60 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
171 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
62 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
103 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
117 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
128 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
79 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
647 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
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 ...
0
votes
1answer
455 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
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
vote
3answers
747 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
162 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
241 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
755 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
329 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
228 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
676 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
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 ...
-7
votes
2answers
479 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
322 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
339 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
579 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
382 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
521 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
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.
1
vote
3answers
836 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
832 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
313 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
180 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
5k 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
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 ...
