Questions tagged [analog-computer]

An analog computer does not use discrete representation of values, but rather continuous values for its inputs and outputs. This tag includes questions about circuits used to implement analog multiplication, analog division etc.

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How to transform resistance between two linear ranges?

This question is motivated by an automotive problem from this question. In a quad vehicle, in a 12V system, there's a fuel sender with 0-100 ohm range, empty to full. The fuel sender was a part of a ...
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Is there any electrical system simple enough to make yourself which has some kind of useful property like radio communication or basic computation? [closed]

I would like to make some kind of primitive system in the direction of a computer, from scratch. Someone showed me you can use ferromagnets to do some elementary computation; the “states” are the ...
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Inverting a (voltage-) transfer function using opamp

If we have a circuit that - given some input voltage \$U\$ - produces an output voltage \$f(U)\$ (where \$f\$ is continuous, monotonic descending), we can construct a new circuit that behaves like the ...
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Is it possible to make a ring modulator where we replace the transformers with op-amps?

I've tried making a ring modulator like the one in following picture but without using transformers (as the right ones are quite a bit harder to get and more expensive compared to op amps). I assume ...
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Are there well known simple operationnal amplifier circuits designs to make purely analog squaring amplifier (for experimental analog computing)?

In order to make analog calculation (for analog regulator simulation), what would be the means to make an squaring amplifier ? There is an obvious solution with a multiplier circuit as pointed here; ...
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Analog computing vs Numerical simulation [closed]

Does the electronic circuit equivalent of a mathematical model have any inherent advantage over numerical simulation of the same model ? For instance, if I numerically simulate the Navier-Stokes ...
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Analog Computer Wiring

I'm trying to implement the following schematic of a simple analog computer The inputs are x and y, according to the text where I found this diagram the circles represent voltage dividers or ...
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Adding large numbers in context of analog computing?

I have been reading about analog computing yet have not been able to find material about a certain issue; in reference to arithmetic, it is said that op-amps are used to perform these tasks, for ...
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How can I model a double pendulum in op-amps? [closed]

I'm interested in chaotic circuits; and while many circuits that model attractors like Chua's Circuit, Lorenz Attractor, and RC phase shift networks are available, I would really like to model the ...
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How is this circuit providing solution of the differential equation d^2 v/dt^2 = -9v?

Book pages at https://books.google.co.in/books?id=d-7owi6uNtMC What I see is that they have taken d^2 v/dt^2 as an input at point A, integrated it to get dv/dt, integrated it again to get v=2sin3t V,...
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Compute spatial integral using analog computing

Let me start by saying that I am not an electrical engineer but a mathematician, who just started to dive into the world of analog computing using for the moment Simulink to simulate an analog ...
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Analog Equivalent Circuit of an easing function

I am trying to wrap my head around wether and with which circuit it would be possible to emulate the behaviour of a digital easing function like ...
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Is there any way to do matrix/vector algebra with analog electrical components?

Is there any way to do matrix/vector algebra with analog electrical components? Only addition, subtracting and multiplying. I'm going to build a Linear-Quadratic-Gaussian(LQG) Controller.
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Analog computer [closed]

I have read a few articles, about possibility developing analog computers.Can anyone explain me what difference they will have this computers with modern digital computers compared.Because I don't ...
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3 votes
3 answers
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Do analog circuits exist that are essentially mathematical functions in DC?

I am curious if a class of analog circuits exist that would take say a 0-5 V input signal and output a mathematical function like a sine function mapping 0-5 V to 0-2pi, or a log, exponent, polynomial?...
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Multisim, Simulation Error

As the picture describes, the Vout is the division's result, but we have an error. Because my experience with MultiSim is not at a high level, why does this happen? Is this my fault ? ]1
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is there a way to light up the second led and not the first one? [closed]

simulate this circuit – Schematic created using CircuitLab In this schematic I made I'm trying to light up a a series of LED's but not in sequence "not yet" what I want is to raise the start of ...
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Is there a way of dividing 2 DC voltages? ie Vout = V1/V2

I need to take the ratio of two filter outputs as part of a project. I converted them to DC voltage values using a rectifier and a smoothing capacitor thinking that this would make division easier. ...
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