Recent content by almn22

Homework Statement Two isolated, concentric, conducting spherical shells have radii R1 = 0.510 m and R2 = 1.10 m, uniform charges q1 = +1.90 μC and q2 = +2.50 μC, and negligible thicknesses. What is the magnitude of the electric field E at radial distance (a)r = 4.50 m, (b)r = 0.840 m, and...

I'm trying to build a fluxgate magnetometer with a digital display of three significant digits without using microcontrollers. I need it to be able to measure Earth's magnetic field (uT range) and B fields as strong as those produced by rare-earth magnets (~0.5T). To person above: I...

the frequency is about 1500hz

is there a way i can do a preamp and multiply my microvolt signal by 1000? i know there are op amp amplifiers but can they amplify that much? even if i can, i would still need a way to build meter to measure in the mV range... Thanks.

I think I should clarify. I want to build a ~3 digit display that can display values as low as ~50uV and as high as ~1V. I guess I would also need a one digit display to show the multiplier. ie. |1.||0||3| E |4| uV Where each || thing is a seven segment display.

Hi, I need a way to display voltages in the range of 1V - 1uV using seven segments, but without using microcontrollers. Any ideas are appreciated. Thanks in advance.