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2
votes
2answers
140 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
106 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
173 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
1k 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
52 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
43 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
522 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
155 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
273 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
298 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
224 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
642 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
184 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 ...
6
votes
2answers
8k 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
1k 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 ...