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Why the medium conductivity is low at high frequency?
skin effect. current flow concentrates near surfaces and avoids the bulk.
What is near-far effect?
Adjacent channel interference nearby frequency leak into passband. The problem can be worse if an adjacent channel user is transmitting in very close range to a subscriber receiver. This problem is referred as near far affect. By Kazi Ashique Ahmed Rafi it usaully occurs in CDMA when users are transmitting unequal powers. by salman ahmed
Why local oscillator frequency are higher than signal frequency?
It doesn't have to be; you can do it either way.If it's part of a transceiver, then the LO is usually placed on the side of the Rx freq that'sopposite the Tx freq, so that leakage from the Tx oscillators can't produce Rx phantoms.Another thing to watch out for ... depending on the Rf band and the IF, you wouldn't wantthe LO to ever operate AT or near the IF frequency. That could really play havoc with theRx discrimination.For example ... an old AM radio, covering 0.55 to 1.6 MHz, with an IF of 0.455. If you put theLO on the low side, then at or near 910 on the dial, the LO runs at 455 to produce an IF at 455 !There's this loud LO blasting out at 455, while the IF strip is trying to work with this tiny receivedsignal at 455 at the same time. Not good.
What are the voltage and current characteristics of a series circuit?
The voltage and current characteristics of a zener diode in the forward bias condition (anode more positive than cathode) are similar to an ordinary diode. Below the cutoff voltage, the current is near zero, excepting for leakage current. Starting at the turnon voltage, the diode starts to conduct. As voltage increases, current increases. At this point, increases in current result in very small increases in voltage. Above the breakdown current, the diode tends to self-destruct. The cutoff voltage for a silicon diode typically ranges from 0.6V to 0.7V, and the beginning of the flat region ranges from 0.7V to 1.4V, depending on the current rating of the diode. The cutoff characteristic is also highly dependent on temperature. It is important to understand that, while the current to voltage curve is relatively flat between the cutoff and breakdown points, it is not completely flat. This is normal diode behavior. In the reverse bias condition (anode more negative than cathode), the zener diode behaves very much like its forward bias condition, except that the cutoff voltage and flat region range are higher and, sometimes, flatter. This is what a zener is used for - it makes a good voltage regulator.
What's the longest an RFID chip can be read?
Depends on the antenna, frequency, the reader power, and the design. Passive RFID's have a range from a few mm's to a few meters. In general, low frequency = near field rf = short range, higher frequency = far field rf = longer range. EPC HF near field tags have short ranges of less than 1 meter. EPC UHF tags are typically 1-2 meters reliable read. Far field range is very complex and it is possible to have multipath reflection arrangements where 10 meters may work... sometimes. With illegally high power transmitters, and large antennas, far field tags can be reliably read to tens of meters or more for non-commercial designs. Semi-passive RFID's can be read over hundreds of meters. Active RFID's are limited only by their transmit power and antenna design.
Why is FM undesirable in the standard AM broadcast band?
The carrier frequency will cause interference with any AM station on or near that frequency.
Where is the fuel cutoff switch for a 1991 Mercury Tracer?
The fuel cutoff switch for a 1991 Mercury Tracer is typically located in the trunk area, near the left side, behind the trim panel. It may also be found near the fuel tank or under the dashboard. If you can't locate it, refer to the owner's manual for specific details regarding its position.
Where is fuel cutoff switch on 2003 Subaru Outback?
The fuel cutoff switch on a 2003 Subaru Outback, often referred to as the fuel pump relay or fuel pump cutoff, is typically located in the engine compartment. Look for a small, oval-shaped switch or relay near the driver's side fender. Additionally, there may be a reset button located in the passenger compartment, often near the driver's side kick panel. Consult the owner's manual for specific details on its exact location and operation.
Where is the fuel cut off switch for a 1998 Chevy blazer?
The fuel cutoff switch, on your 1998 Chevrolet Blazer, can be found on top of the fuel injector pump. The fuel injector pump is on the back side of the engine near the top.
Where is the fuel cutoff switch in a 1996 Mazda millenia?
In a 1996 Mazda Millenia, the fuel cutoff switch, also known as the inertia switch, is typically located in the trunk area. Specifically, it can be found on the right side near the rear panel. If the fuel cutoff has been triggered, you can reset it by pressing the button on the switch. Always refer to the vehicle’s owner manual for precise locations and instructions.
Where is the fuel cut off switch in a citreon saxo?
fuel cutoff switch in engine compartment at back near bulkhead left r right
Where is the Airconditioning cutoff relay located on a 1990 dodge B250 van?
The air conditioning cutoff relay on a 1990 Dodge B250 van is typically located in the engine compartment, near the battery or on the driver's side fender. It may also be found in the fuse box, which is usually situated near the front of the engine bay. Consult the vehicle's service manual for precise identification and location.
If frequency is maximum then the signal will far away or near?
What is the name of 5G Network?
What do people do for work on Everest?
There are yakherders, curio shops and Sherpa mountain guides galore near Everst.
Where is the cutoff switch on a 1988 trans am?
The cutoff switch on a 1988 Trans Am is typically located in the trunk, mounted near the battery. It's designed to disconnect the battery in case of emergencies or maintenance. If you're having trouble locating it, check the owner's manual for a detailed diagram or specific instructions related to your model.
Where is the Toyota matrix fuel cutoff switch?
The fuel cutoff switch in a Toyota Matrix is typically located in the trunk area, often near the rear passenger side. It can be found on the side panel or near the fuel pump access panel. If you're unable to locate it, consulting the owner's manual can provide specific details for your model year. Always ensure the vehicle is off and take proper safety precautions when accessing it.
Which color has a higher frequency?
In the visible-light portion of the electromagnetic spectrum, frequencies are lowest near red light (approaching infrared waves) and highest near violet light (approaching ultraviolet rays).
