Hi guys can someone help me out im a verrrrrrry un mathematically minded person slowly learning lol Im trying to expand out this equation but not sure how to go about it. Vout= Vin* [98+((2/k)*Vin)] I think im right so far in thinking il end up with; Vin*98 + Vin*(2/k) + Vin*Vin Now if thats right, then for the 3rd part of the equation were Vin= 0.01 sin(2pi800) i get an equation of the type (sinx)*(siny)= cos(x-y) - cos(x+y) How do i apply this to 0.001 sin (2pi800) ? i.e what do i do with the two 0.001's etc? Please help im very lost
i could not get what you want to do with Vin. If Vin is a sine wave the equation would be Vin = Vmax* Sin(θ+phy) [ i did not get the symbol for phy in ] could you pls let me know what you want to do with Vin
Hi edgetrigger, The 0.01 sin(2*pi*800) is definatley correct. Peak sine wave voltage is 0.01 at 800hz working from equation; Vpeak sine (ωτ) were t is irrelevant for now and 2*pi*800 is hertz to angular velocity the equation is the input to output expression for a theoretical amplifier, were v out = the equation given below, the answer should be several (3 we think) voltages a dc component, fundamental frequency and a harmonic frequency. The previous example we are given is Vo= 0.001 + 9.962Vi + 0.1Vi^2 with Vin at 0.01 sin (2000*pi*t) we get a result of 0.001005 + 0.09962sin(2000*pi*t) - 5x10^-6cos(4000*pi*t) 0.001005 volts dc 0.09962 volts ac at 1000hz fundamental frequency 5x10^-6 volts ac at 2000hz second harmonic Any ideas??
The answer is delayed, but, hey, I deserve some christmass free time. Let me try this one: So, I guess your assumptions where correct. I used the formula proposed by edgetrigger. As usual, any corrections are welcome.
thanks for that georacer and edge trigger, i got there in the end with a lot of head banging but your workings make a lot more sense than mine so nice to see how i got there Really appreciate the help, its nice people like you that will eventually help us mere mortals kill maths once and for good Happy new year