Help listing non ohmic devices

Thread starter triniman
Start date Nov 28, 2006

In summary, a non-ohmic device is an electronic component or material that does not follow Ohm's Law. Some examples include diodes, transistors, and thermistors. These devices can significantly affect circuit performance and are typically represented by different symbols in a circuit diagram. They can be identified by measuring resistance at different levels or researching the component.

Nov 28, 2006

triniman

Hi all, besides the filament bulb what other devices are considered to be non ohmic??

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Nov 28, 2006

turbo

Gold Member

What makes a filament bulb deviate from ohm's law? If you know that, you can list other devices yourself.

Nov 28, 2006

triniman

hey thanks that helps a lot

1. What is a non-ohmic device?

A non-ohmic device is an electronic component or material that does not follow Ohm's Law, which states that the current through a conductor is directly proportional to the voltage applied, as long as temperature and other factors remain constant. In other words, the resistance of a non-ohmic device is not constant and can change with varying voltage or current.

2. What are some examples of non-ohmic devices?

Some common examples of non-ohmic devices include diodes, transistors, and thermistors. These devices have varying resistance depending on the voltage or current applied.

3. How do non-ohmic devices affect circuit performance?

Non-ohmic devices can significantly impact circuit performance because they do not follow Ohm's Law, which is the basis for many electrical calculations and designs. They can cause voltage and current fluctuations, leading to instability or failure in a circuit.

4. How are non-ohmic devices listed in a circuit diagram?

In a circuit diagram, non-ohmic devices are typically represented by a symbol that differs from the standard resistor symbol. For example, a diode is represented by a triangle with a line through it, and a transistor is represented by three arrows pointing in different directions.

5. How can I identify non-ohmic devices in a circuit?

To identify non-ohmic devices in a circuit, you can use a multimeter to measure the resistance at different voltage or current levels. If the resistance varies significantly, the component is likely a non-ohmic device. Additionally, researching the component or consulting a circuit diagram can also help identify non-ohmic devices.