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(1) A square wave is made up of many harmonics. So if the reciever has a tuned input to any of those harmonics (lower ones) then it will detect the RF signal.
(2) Input your square wave into a bandpass filter preferrably tuned to the fundametal frequency of the square wave. It will output a...
(1) Resistors don't generate charge or current. They just oppose the potential that V is trying to push through.
(2) The voltage divider rule and Kirchoff's voltage law around a closed loop is a fundamental and can never be violated. This rule comes before anything else.
(3) The charge across...
@karesz: sorry about the 10Mohm thing, but the principle is the same. In my opinion, it is wrong. The reason is: Lets say you do put the R in the circuit from the 48V to earth ground. OK. The negative terminal is now tied to earth ground through the R. Now lets say the 48V positive accidentily...
I am going to post assuming that there is a transformer present and that the secondary is isolated from the primary.
I don't know what the NEC requirement is for not letting a system float with respect to earth ground, but lets assume that 48v is above that requirement. Then your connection is...
So if one transistor is dissipating 1W then use 240C/W.
If four transistors are dissipating 1W then use 125C/w.
(1 Watt total, not each.)
Got it.
If three transistors are dissipating 1W then interpolate between 240 and 125.
(1 Watt total, not each.)
Interesting: 240/4=60. Coupling between...
Class A Amp: biased in the middle of the load line when idle: highest power dissipation when idle.
Class B Amp: Used in a push-pull configuration. Biased so that the transistors are just barely on. More efficient and the most common output stage method.
Class C Amp: Biased below the bias turn...
I am not a beginner in electronics, but this question may be. I know what thermal resistance for a package is, but I have a question for somebody. I am looking at an IC that has 4 2n2222 transistor in it (MMPQ2222A). It is an SOIC-16 package. Now, there are two ratings for the thermal...
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