I've seen that
One of my instructors showed us a simple AM radio he built with just that type of setup. It was a totally passive radio. A simple antenna lead to a tank circuit... the tank circuit was in parallel to another parallel branch that had a diode and capacitive earphone (single...
Can a so called "common mode voltage" be a dc voltage??
Say there is a simple series circuit... a DC source.. a resistor.. and finally a motor. The point where the motor meets the DC source is the ground.
Neither side of the resistor is at ground potential. So if we want to measure the...
try this
This is a free resource on electric circuits made by people similar to the GNU freaks:
http://www.ibiblio.org/obp/electricCircuits/
excellent resource... once u are an expert in electronics.. u can help their project too
How
How does the probe measure the power of the wave that is mostly sandwiched between the layers of dielectric in the PCB? I do realize that a certain % of the energy leaks into the probe, but if that % was not fixed, how do we get proper measurements from the Spectrum Analyzer?
But.
Yes there is a delay with EM. Yes they can be blocked. But electric fields and magnetic fields can be blocked too. Thank you for the wealth of information, I haven't gotten to the maxwell equations part of my study of EM- still dealing with first year courses (basic fields).
Virus?
Could be a virus. There have been cases of CELL PHONE/ PDA/ Handheald Computer viruses. Some can even be trasmitted to other devices without anyone knowing (through bluetooth).
I=V/R .. only if VI <Pmax
You can't use the OHM's LAW relationship with 2 knowns to find one unknown with Tazers and similar phenomena because the VOLTAGE is not constant. The Voltage drops like a rock once current goes up. So it's not a linear relationship. A powersupply operating within...
I often use Spectrum Analyzers to probe RF signal powers at different points on multilayered PCBs. These probes have a single conductor (or at least only require a single conductor). Placing the probe on a signal trace on the top exposed surface of the PCBs instantly shows us the RF power at...
What is RF/EM??
Did you notice how modern sources (textbooks, tutorials, industry experts) treat Electrical Force and Magnetic Force quite differently than propogating RF/EM waves? Why?
When I'm learning all this, for some weird reason, I always assumed that "proagatin EM waves" were just...