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0
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2answers
62 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
72 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
95 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
88 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 \...
4
votes
1answer
94 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 ...
1
vote
1answer
253 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
234 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
149 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
44 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
203 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
96 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: ...
-2
votes
1answer
175 views

Clipping circuit simulation producing unexpected result

I am playing around with a clipping circuit to protect a adc on my microcontroller. I beleive the following will work, but when I simulated the circuit I saw something funky. Any ideas on why adding ...
5
votes
5answers
2k views

How to prevent op amp from saturating?

How can an op amp be prevented from going into saturation if the feedback is intermittently disconnected? For example, in this circuit (simplified case of a real-life problem), the op amp acts as a ...
1
vote
0answers
519 views

Series diode voltage clipper, on Multisim clipping and shifting on positive and negative voltage

This is my circuit: I’m testing a Series diode clipper circuit, and the end result should be this: (I've used 5V in my circuit, not 10V like in this plot, but this is not the issue) Instead what ...
2
votes
2answers
784 views

Low voltage audio amplifier clips on 8 ohm loads

Exposition time: One could call me a freshman in electronics and I just designed my first little audio amplifier for headphones. (Pocket design, I want to be able to drive 4 headphone pairs from a ...
2
votes
2answers
572 views

How to modify this circuit for variable clipping without affecting gain?

Below is a basic implementation of a circuit used to clip an incoming signal using the diodes in the feedback loop of the op-amp. Since the diodes are different they have different characteristics, ...
1
vote
1answer
202 views

Need help with diode circuit

Could someone tell me if I've used the right approach for this problem? Assuming IDEAL DIODES: I am aware this is not a practical application and that it would not work in real life, but I just ...
0
votes
2answers
8k views

Solving Clipper Circuit containing battery and resistance in series

I have learned to solve clipper circuit with and with out battery in parallel to the output node. But have no idea what to do if a resistance also connected with it in series. There is nothing said ...
0
votes
1answer
72 views

Differential Voltage Range vs. Clipping Level

The data sheet for the AD835 analog multiplier mentions that its inputs have a "Differential Voltage Range" of ±1V and a "Differential Clipping Level" of at least ±1.2V (typ. ±1.4V). What is the ...
0
votes
1answer
65 views

The ouput Vo graph that is clipped

this is the circuit I am considering everything ideal. according to me it will clip the AC voltage from both cycles but the battery polarity of 15V with D2 is confusing me. According to me the ...
0
votes
3answers
1k views

How to design a unity gain with LM358 op amp?

I am trying to get a unity gain out of an LM358 to increase the current of an AC sine wave input from 5mA to something slightly higher. I thought I had it hooked up correctly for unity gain, but most ...
4
votes
2answers
243 views

TDA7231A seems to be clipping all the time

Final update: I got two more chips today and started experimenting with them. I tried both adding a 10 k resistor from C4 to the ground and the circuit in JIm Dearden's answer. His circuit helped a ...
1
vote
2answers
547 views

How to improve nasty form clipping behavior in differential input stage

The amplifier in the following schematic, when simulated, shows that it can cleanly amplify a signal with 0.1V amplitude to 10V. When driven with a larger signal, though, the behavior is very nasty in ...
4
votes
3answers
404 views

Reduce and clip voltage of a 5Mhz ultrasonic signal from +-50V to 0-3.3 V

I know there are a lot of posts similar to this one but some differences make it worth posting it. I’m working on a project where I have a 5MHz AC signal with the largest amplitude of +-50V. It’s an ...
3
votes
3answers
324 views

clamp low voltage signal

I have an audio sine signal -300mv to +300mv (600mv p-p), and I would like to read it using a microcontroller. I want to get rid of the negative half of the sine signal. How can I clip it? I do not ...
5
votes
3answers
992 views

Clip signal with very low threshold

I need to limit a signal to the following range: [-0.25V, 0.25V]. This signal is comming from a shunt resistor in series with a load with variable impedance on a <...
2
votes
2answers
232 views

Clamping Schottky Leakage Current

I'm trying to understand how the leakage current of D1 will affect the above circuit. From point A to point B I have a lengthy cable whose characteristic impedance is unknown. Because of the length of ...
11
votes
2answers
19k views

How would I design a protection clipper circuit for ADC input?

I'd like to be able to protect my ADC from input voltages higher than 5V. What's the simplest protection circuit I could build to have an output like shown below? Thanks
4
votes
2answers
2k views

How do I use a clipping Zener at the input of an Opamp inverting amplifier?

I have a \$ V_{in} \$ signal for which I cannot guaranty that it would have an upper limit. I want to clip this input signal to a limit (e.g.; 8.2V) with a circuit like above. Is this circuit alright?...