Electronics > Beginners

Transforming a signal shape?

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sgt_johnny:
Hello Everyone!

My question is about transforming a signal shape to another shape:

The given signal looks like the following:

The normal level is zero volts, in the event of a signal, the voltage rapidly drops (almost instantly) and then slowly coming up to just over zero and then normalizing to zero volts. Basically like a negavite saw-tooht but one side raplidly droping and the other side slowly rising up. Also the signal is very short in time. Because of shape and lenght, the signal cannot be used. A slow ADC would just miss the signal beween its conversion shots, or get a point just anywhere on the signal. For a usefull measure, the ADC should get at least 8 points on the signal.

I'm looking for a way to transfrom the signal into either a nice looking positive sine pulse, or better a trapezoidal shape. The lenght (time) of the signal should also be made longer.

There is no need for a "out of the box"-Solution, thats why the parameters/voltages of the signal are not relevant, i just want help on the topic, like getting knowledge how the signal can be controlled. Can someone here help me with this topic?

Thanks,
Johnny

tggzzz:
Draw a picture of the required inputs and outputs, showing time and voltage limits.

Tell us your problem/goal, as well your solution. In most walks of life, technical or non-technical, if we know the reason for the question you will probably get a better answer. Either the answer will be more pertinent to your needs, or perhaps it can suggest a better alternative that you haven’t even considered. Don’t ask “Can you give me a lift into town?” Do ask “Can you give me a lift into town, so I can replace my broken frobnitz?”. The answer might be “There’s a spare frobnitz in the attic”, thus saving time, money, the environment – as well as making some space in the attic.

jeroen79:
Seconded.
If we don't know what you want to accomplish and what this signal is the we can come up with all kinds of 'solutions' that may not help you at all.

Benta:
"Can someone here help me with this topic?"

No. As long as we have no idea whether you're talking uV, mV, V, kV or s, ms, us, ns or ps or whatever, there is no way we can help you. A "one size fits all" solution does not exist.

David Hess:
If you integrate the signal in the analog domain, then a slow ADC can recover the area.  Peak detection can recover the maximum value for a slow ADC.

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