Recent content by MathsDude69

Hey Folks. I am currently designing a buggy which tracks an inductive wire using two inductor sensors. The wire is carrying 20Vac pk-pk , 125ma at 10kHz. I have designed a sensor circuit which has a ratio of 2:1 ie it outputs a waveform of 10Vac pk-pk (assuming 100% mutual inductance). This is...

This is a very silly question. I can't believe I have forgotten. I have a 30v bench power supply and I am looking to test an op-amp running at +/- 15v. I have a supply which has a negative output/ positive output and inbetween a green common/earth output. How do I wire them to produce the +/-...

its ok I've solved it using repeated partial fraction expansion. woop woop

Hey Guys. Im trying to find an inverse laplace transform for fraction in the laplace domain but can't find it in any of my laplace pair tables. The fraction is: 1/(s + 4)(s + 4)(s + 8) Does anybody have any suggestions?

Homework Statement The circuit below (please see attactment) shows an RLC filter circuit whereby RC = 1/2 and LC = 1/16. Determine the differential equation that describes the relationship beween the input voltage Vi(t) and output voltage Vo(t). If the initial conditions of the capacitor and...

Awsome. Thanks a lot!

...erm... L(C*(Vc(t))'') ??

Sure. I figured ic(t) = C*(VC(t))' In my case VC(t) and VO(t) are the same quantity.

I assumed that in a series connection that the current was equal between all parts, thus the magnitude of the current given by the voltage drop across the capacitor would also indicate the level of current in the inductor. But then again you know what they say about assumption :-p The only...

Im guessing then that it should be along the lines of: L*d2i/dt2 + R*di/dt + 1\C*i what is confusing is that all the information I have pertains to RL/RC circuits which are first order systems. Is it even possible to rearrange a second order system such as this to obtain a second...

Sure. Here you go.

Homework Statement For a RLC circuit with RC = 1/2 and LC = 1/16 determine the differential equation that describes the relationship between the input and output voltages. An image of the circuit is shown with RLC all in series with the input voltage Vi(t) across all 3 components. The voltage...

Hey Guys, Im currently designing a primitive audio mixer unit using opamp circuits for simple filters/crossover networks. Prior to the signal being run through a power amp circuit I am looking to pass the signal to an ATmega328 MCU which has an ADC with a range from 0 to 5 Volts outputting to...

See this is where I am getting confused. If the input power is 504.668W instead of 500W wouldn't that make the current and thus the losses higher on the primary winding??

Hey. I've found a bit more information regarding copper losses in transformers. It states: I would think given the question that the asnwer would be: P = VI ∴ I = P/V For the primary: 500/230 = 2.27 Amps For the secondary: 500/24 = 20.83 Amps Copper loss for primary: 2.272 x...