Hi
I've built what is meant to be a non-inverting dc amplifier using a 741 op-amp (shown in attached diagram). Resistor values are: R0A= 470k, R0B= 47k.
I am feeding the op-amp a supply voltage of 12v and an input voltage to the non-inverting input of 0.5v. According to the resistor values...
Hi, I hope someone can help me with this question, I originally posted this question in the homework help forumbut no one seems to be able to help me with it. I think my problem is more math related - I don't really know where to start.
I have been a given a matrix containing aircraft...
I'm afraid I can't work out what you're getting at. Having tested the piezo stack using an oscilloscope, it clearly shows an AC signal when an impact is applied. As far as I can tell, the only way to extract maximum available power is to rectify the output.
Please let me know if I'm getting...
Hi
My project involves rectification of a voltage produced by a piezoelectric stack subjected to an impact. The voltage shall be rectified using a full wave bridge rectifier.
I aim to use a capacitor (in position of the smoothing capacitor) to store the energy harvested from the impact...
Hi
I'm planning an experiment in which I will try to generate power from a force applied to some piezo electric material (in fact it will be an impact with the ground).
I think I need to find a piezo stack, but where can I buy such a thing for a reasonable price? Does anyone have any...
Good Evening
I'm interested in the possibility of using a DC brushed motor as a generator (ie running it in reverse - mechanically turning the shaft to produce electricity).
However, I have no idea how to calculate the power I could potentially achieve. Any tips or equations in particular...
Hi
Sorry, I guess I was a little sparse on detail - I was trying to keep it simple!
I am basically designing a wireless autonomous sensor device powered by energy harvested from the surrounding environment. This energy will need to be stored in a battery, so I need to find the amount of...
Hi
I am trying to calculate the power required to take a measurement using a sensor. Datasheets do not provide the power requirement for devices (in watts). Can anyone give me any advice on how to find the power requirement using information provided in a typical datasheet? I know I could...
Hi
Does anyone know the main advantages and disadvantages of strut braced wings on fixed wing aircraft, and why they are not used for any large commercial planes these days (as far as i know!)?
Thank you
Hi
Does anyone know the equation for the phase angle by which v0 leads v1 in a bandstop (parallel resonant) circuit?
also, can anyone tell me how (in terms of the equation for the transfer function) a bandstop filter works?
Thanks a lot, any help appreciated.
:redface:
Hi, I'm doing some research into fly-by-wire system on aircraft and need some more information on actuators. I know that electrical signals are sent to the actuator from an onboard computer, but I'm not sure how the actuators then move the control surfaces. Do they use hydraulics? If so how do...
can anyone tell me the scientific reasons why airfoils are used to straighten airflow (e.g. turbulent flow from a fan or propeller). i know how they are used to produce lift, but cannot see how they straighten airflow.
thanx!
o:)
I am doing an investigation into the air flow from a fan in my physics class. I need to know why the reason why air flows in a vortex shape from the fan (in physics terms), and what equations I can investigate (anything, e.g thrust etc).
Also, I believe the airflow from a fan can be...