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Why rf choke is used in collpitts oscillator?
To isolate the bias circuitry of the transistor from the feedback network with RF currents.
What type of inductor is installed in a circuit to impede the flow of ac of a frequency?
A: The inductor is called a RF choke
Why is radio frequeny choke used in high level modulating circuit?
Because the output circuits of the modulator would otherwise present an impedance to the RF amplifier in parallel with the transmission line and antenna system, which you don't want. In other words, you want the RF all going up the tower, not down to ground through the modulator.
What is a choke in electric panel?
It could be to filter out outside interference from getting out or in. Radio equipment needs good filtering in the supply.
What operation Base Transceiver Station perform?
Transmitter section multiplexes baseband signals and modulates it with a carrier,then frequency translates IF to RF by frequency synthesizer and mixer. combines the power to transmit through a antenna before passing it through high power amplifier and bandpass filter. Receiver section passes RF through a band pass filter and low noise amplifier. Downconverts RF to IF by tunable local oscillator and mixer. further the signal is demodulated and demultiplexed before sending to ground communication equipments
Why rf choke is used in collpitts oscillator?
To isolate the bias circuitry of the transistor from the feedback network with RF currents.
What type of inductor is installed in a circuit to impede the flow of ac of a frequency?
A: The inductor is called a RF choke
Where is the oil filter located on a 1997 Buick LeSabre?
On the RF of the engine underneath.
Where is the oil filter located on a 2002 dodge neon?
it is behind the oil pan, in from the rf tire
Were is the choke?
On the intake of the carburettor where the air ram pipe / air filter fits.
What is the use detector in wireless communications?
The detector detect the audio signal in the received modulated RF signal, rectify it and filter the RF to ground and pass the pure audio to the next stage
Weedeater only runs when you keep moving throttle from full choke to half choke?
Clean and adjust the carburetor. Also clean the air filter.
Why sand and MgSO4 added during chromatography?
used ad drying agent ,has lower Rf and used as a filter
What is an Rf?
AN RF Isolator is really a three port device called an "RF Circulator" in which one port is always terminated correctly with a suitable load. RF Isolator are usually passive and are bandwidth limited.Typical use: It used in the output of a RF Transmitters High Power Amplifiers but before a BP/ HP filter and the antenna.Typical Function: To isolate a TX RF Power Amplifier output from receiving RF feedback from external sources. i.e. In this case the RF coupled in from other Antenna systems in close proximity. Such undesired RF feedback would cause intermodulation / harmonics products to be generated within the RF amplifier and consequently be re-radiated out along the the desired RF signal to the antenna and possibly cause interference. Often used on all TX's in two way radios sites to avoid local IM.SIMPLIFIED: In other words an Isolator passes RF in one direction but attenuates RF in the other direction.Note: The RF Isolator is slightly non linear and therefore it can cause low levels of intermodulation / harmonics. So it is good practice to place either a basic Band Pass or High pass filter after the RF Isolator to attenuate the unwanted IM products.Tuning these RF Circulators / Isolators correctly requires a suitable network analyzer or combination of RF Bridge / Spectrum Analyzer with Tracking generator.
What is an RF isolator?
AN RF Isolator is really a three port device called an "RF Circulator" in which one port is always terminated correctly with a suitable load. RF Isolator are usually passive and are bandwidth limited.Typical use: It used in the output of a RF Transmitters High Power Amplifiers but before a BP/ HP filter and the antenna.Typical Function: To isolate a TX RF Power Amplifier output from receiving RF feedback from external sources. i.e. In this case the RF coupled in from other Antenna systems in close proximity. Such undesired RF feedback would cause intermodulation / harmonics products to be generated within the RF amplifier and consequently be re-radiated out along the the desired RF signal to the antenna and possibly cause interference. Often used on all TX's in two way radios sites to avoid local IM.SIMPLIFIED: In other words an Isolator passes RF in one direction but attenuates RF in the other direction.Note: The RF Isolator is slightly non linear and therefore it can cause low levels of intermodulation / harmonics. So it is good practice to place either a basic Band Pass or High pass filter after the RF Isolator to attenuate the unwanted IM products.Tuning these RF Circulators / Isolators correctly requires a suitable network analyzer or combination of RF Bridge / Spectrum Analyzer with Tracking generator.
Why cant freshwater plants live in saltwater?
they aren't able to filter out the salt, so they choke on it.
Why are you using bleeder resistor in LC filter?
In LC filter , Bleeder resistance is connected in Parallel with the load to maintain the minimum current through the choke and so the performance of the Filter improves.
