Recent content by Xarren

Well the battery voltage is the V in case of one resistor. If you have more than one resistor, Vs are distributed in ratios according to their resistances. Eg two 1ohm resistors and 5V supply = 2.5V across each resistor.

To "the" resistor? Where is the resistor? What is the circuit? Power is current x voltage. Max power usually the amount of power the component can dissipate as heat. If more power is applied, the component will melt/break. Resistors have "power ratings" which tell you how much power can be...

Have a read through this - My school achieved a ridiculous range, I'm pretty sure it details radio comms somewhere there: http://www.hexoc.com/pages/apex/apex-ii.php Edit: Here is the technical document specifying data transmissions: http://balloon.hexoc.com/media/apextech.pdf

Ahh, my appologies in that case, power electronics is black magic to me, but if you post a diagram I'll definitelly try to work it out.

I didn't read through all of this, but you're missing diodes reverse biased in parallel with the inductive loads. That is because in simple terms, inductive loads do not like being switched off quickly, and will produce a negative voltage spike. This should sort your problem out.

You can't reverse current as such, but you can make it pi radians out of phase with the voltage. It is caused by the imaginary part of impendance, in reactive circuits. No clue what the context is - But chances are this is your answer.

Regarding batteries, when it comes to nimh batteries (used in cars), and others, the problem is that they are really just stacks of lower voltage cells. Problems occur because of natural variations in the cells, so if one in the middle of the stack runs dry before the others, it may cause a...

Hey, my first post on here, just wanted to ask how to calculate the effect of a motor, and a switching current in the wires supplying the power on the surrounding electronics. The two motors will be supplied a PWM signal of 20Khz frequency, 5amp, 7v2 at 80% duty cycle. This is part of a...