# Problem on a chaotic circuit.

1. ### Lasha

22

windows screen capture
So I built this circuit(Chua's chaotic circuit) and I have to take it to the lab for plugging it to oscilloscope.I need to make sure it works, cause I won't have any time there to fix it or rebuild it.So when I i tested it with the multimeter,there was no voltage on the left side and there was a voltage of a constant value on capacitors(I checked the connections and everything is okay).So is this because of the frequency? Or am I doing something wrong?(Note:left side has to behave like an inductor)

2. ### vk6kro

4,059
Could you supply a circuit diagram?

Check all wiring. The power supply pins on the ICs should have the right voltages on them. These stay constant so they are a good starting point.

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3. ### Lasha

22
This is the schematic: .

This is the function of a chua's diode, g(x)is resistance vs current:

This is the double scroll

:

Yes, but shouldn't it oscillate?I highly doubt its a connection problem.

Last edited: Dec 25, 2013
4. ### vk6kro

4,059
You can't tell if something is oscillating when you use a multimeter. You might get a reading on AC volts but these ranges are often pretty insensitive.

So, you may have to wait until you get an Oscilloscope connected to it.

Incidentally, you may be surprised how cheap oscilloscopes can get.

Digital oscilloscopes from China have entered the market and that leaves a lot of unused, perfectly OK analog oscilloscopes available.

There are also plenty of handheld oscilloscopes like this one:
http://www.ebay.com.au/itm/Mini-ARM...Electrical_Test_Equipment&hash=item33801dd01c

6. ### AlephZero

7,298
You can't "graph in 3 dimensions" on any oscilloscope. Some scopes have a "Z" input channel that modulates the brightness of the trace as it is being drawn, but that's not the same as creating 3-D graphics.