How can an ohmmeter determine if two points on a protoboard are connected?

  • Thread starter vptran84
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In summary, an ohmmeter can be used to determine if two points on a protoboard are connected by measuring the resistance between the points. If there is no current and the resistance is infinite, the points are not connected. If there is current and a finite resistance, the points are connected.
  • #1
vptran84
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how can an ohmmeter be used to determined if two points on a protoboard are connected?

thnks
 
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  • #2
vptran84 said:
how can an ohmmeter be used to determined if two points on a protoboard are connected?

thnks
By measuring the resistance between the points?
 
  • #3
Just to extend on Integral's answer, an ohmmeter measures the resistance between the two points using an internal voltage source and a galvanometer, which measures current. If you measure the resistance between two points that are not connected, the current will be zero and the resistance will be "infinite". If the points are connected, however, there will be current and a finite resistance.
 

1. What is an ohmmeter and how does it work?

An ohmmeter is a type of electronic test instrument used to measure the electrical resistance of a circuit or component. It works by applying a known voltage to the circuit and measuring the resulting current, then using Ohm's law (V=IR) to calculate the resistance.

2. Can an ohmmeter be used to measure both AC and DC resistance?

Yes, most modern ohmmeters have the ability to measure both AC and DC resistance. However, it is important to select the correct setting on the ohmmeter for the type of current being measured.

3. What is a protoboard and how is it used in circuit design?

A protoboard, also known as a breadboard, is a reusable electronic circuit board used for prototyping and testing circuits. It consists of a grid of holes with metal strips connecting them, allowing for the easy insertion and connection of electronic components without the need for soldering.

4. Can a protoboard be used as a permanent circuit board?

No, a protoboard is not designed for permanent use. The connections on a protoboard can become loose over time, leading to unreliable circuit performance. Once a circuit design has been tested and finalized on a protoboard, it should be transferred to a permanent circuit board for long-term use.

5. Are there any limitations to using an ohmmeter and protoboard for circuit design?

While ohmmeters and protoboards are useful tools for circuit design, they do have limitations. Ohmmeters can only measure resistance and not other important electrical properties such as capacitance and inductance. Protoboards also have limited space and may not be able to accommodate more complex circuit designs.

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