Recent content by yy.toh

The ouput of common emitter transistor 1 is connected to input of common emitter transistor 2. Please explain about the input and ouput signal (ac). 1.Is there any amplification after the transistor 1? Normally the input is in uA, the output is in miliA 2.Is there any amplification after...

please explain more on the \alpha\beta\gamma modification please

1.When capacitor block dc, we call it coupling, right?How to determine the capacitance to block the dc? 2. When capacitor connected in parallel to ground, it short-circuited the ac to ground, we call it decoupling, right? How to determine the capacitance to short-circuit the ac? 3. thanks for...

I am confused. 1. What is the name of the capacitor to block the DC?How to select the capacitance? 1. What is the name of the capacitor to block the AC?How to select the capacitance? 3. What is the name of the capacitor conneted between the terminals of a dc motor, what is its function and...

Guys, dc decoupling, ac decoupling and ac filtering capacitor are frequently used. How do we determine(select) the value of its capacitance?

is that so. Do you know how to determine h, k, l and a, b, c from the XRD data for orthorombic sturcture? help please...

If you want to work in the field of electrical power I suggest you to take the EE. If you want to work on the component research level I suggest you take physics. I am a graduate in physics worked in electrical power firm before I know the different best. best regards

Hi there. the RC car transmitter circuits actually employed an encoder and it is a digital device.your idea has been done.

Guys, from circuitstoday.com I researched, I understood ig picture of a basic FM transmitter. there should have basic blocks like audio amp, modulator (oscillator included), radio amp and the anttena. suppose I want to build a FM transmitter, what is my first step? step1 says I choose 0.5m...

Bragg's law n.lambda=2d sin theta. d=1/{h^2/a^2+k^2/b^2+l^2/c^2} for orthorombic structure. thus d=n.lambda/2 sin theta=1/{h^2/a^2+k^2/b^2+l^2/c^2} lambda and theta are given. Look, there are two types/sets of unknowns in the d formula, they are miller indices h, k, l and lattice constant...