shadowfax00178
New Member
Wheatstone bridge anyone... does anyone know anything about it like how to make one, how it works, or anything? :lol:
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shadowfax00178 said:the problem is... i can only spend $5 on the materials needed to make it so that is what im having trouble with. LIke, how would you get a galvanometer for less than 5 dollars?... Now, you could probably make a galvanometer but I don't know how... do you?
Russlk said:Inexpensive cap meters apply a fixed current and measure the time to reach a voltage. I don't know how inductance meters work, could apply a fixed voltage and measure the time for the current to reach a known value.
shadowfax00178 said:what's a crystal earpiece and a 1KHz oscillator ... and a cap meter and i don't get how that's needed and what it will do, where to put it, and all that stuff. Also, for the wheatstone bridge, don't you need like an adjustable resistor to compare it to the unknown one by a ratio thing, how would you make an adjustable resistor?
shadowfax00178 said:im trying to build a wheatstone bridge that can accurately measure resistances in the range of 1 ohm to 100 ohms... i have to test the reliability by measuring the resistances of a known resistor... the overall cost of all materials must be less than $5 and i have about a month to finish it...
fly101 said:There is something I don't really understand and am curious about.
https://en.wikipedia.org/wiki/Wheatstone_bridge
On this webpage, there is a meter in the middle of the Wheatstone Bridge and I got confused by it because I couldn't understand what kind of meter it was. :?