galvanometer?

[fleamonkey]

hi im searching for a galvanometer in multisim 10. i cant seem to find one. Has anyone an idea of an alternative please?

 

[colin55]

You can use a millivoltmeter or milliamp meter or micro amp meter.

 

[fleamonkey]

You can use a millivoltmeter or milliamp meter or micro amp meter.

ii only seem to have standard ones in my database, do you know where to find them or can i alter the existing database?

 

[colin55]

By adding a 10k to 100k resistor in series with a meter, you increase its impedance. Use an amp meter and get a reading such as 0.001 A

 

[crutschow]

So what type of non-standard one do you need?

You can measure any current or voltage in the circuit with the available devices. If you need to look at at AC current with the oscilloscope, you can use a current-controlled voltage source.

 

[fleamonkey]

its in a wheatstone bridge. so i require the voltmeter to be as sensitive as possible . i also have an op amp in the circuit .

 

[crutschow]

So what's the sensitivity of the available voltmeter?

 

[fleamonkey]

1 x 10-12 i beleive, im sure it will be enough to calculate my gain as both voltmeters will have the same error.

 

[crutschow]

So, you have what you need then?

 

[fleamonkey]

looking at it again i think so lol, thankyou