1)in cc configuration we use to get the low output impedence
where as in ce we use to get the high output impedence.
2)in cc amplifier we use to have the voltage gain equal to unity
where as in ce amplifier we use to have the high voltage gain.
3)in cc amplifier there is high power gai which is used for impedence matching
where as in ce amplifier due to the high voltage gain the impedence matching is
less impossible.
grounding the base in CB makes the base act as a shield between the input on the emitter and the output on the collector. this shield eliminates the undesired capacitive coupling from output back to input that might cause oscillation.
in the CE configuration there is no shielding between the input on the base and the output on the collector. this capacitive coupling might feed enough output back to the input to cause oscillation. this is much less likely to be a problem at lower frequency.
Yes, but it will be less efficient than one designed for FM.
when the frequency is low , energy will be obviously low. To increase the energy of the signal we need to increase the frequency. This is achieved by multiplying the message signal with the carrier signal (with high frequency).
High frequency is used because of the the size of antennas used to transmit and receive the communications signal. The higher the frequency the smaller the antenna.
Piezo-electric quartz crystals are used to define the frequency in a crystal-controlled oscillator. Quartz is a hard material that tends to oscillate mechanically at a high frequency (up to about 20 MHz) when maintained by the maintaining amplifier. The signal produced is far more stable and predictable than an L-C oscillator, especially when the crystal is placed in a dedicated oven with a controlled temperature.
No. In an amplifier, Power Out > Power in. In a transformer Power Out ~= Power In (minus internal losses). An AC generator is more like an amplifier than a transformer.
This is where the low-frequency driver, or woofer, is wired to a separate amplifier than the high-frequency driver or drivers. Also called bi-amping.
A wideband amplifier is an electronic circuit providing constant amplification with a ratio of its low corner frequency to its high corner frequency of more than an octave. The widwband amplifier is complementary in concept to "audio amplifier" (20Hz-20KHz) and "video amplifier" (15KHz to 4.8MHZ). The "opposite" concept is the narrow-band or tuned amplifier. There's a new wideband amplifier technology called PowerBand from TriQuint Semiconductor. end-
at low frequency less than 50hz the voltage gain decreases with decreasing frequency and at mid frequency{50hz to 20khz} the voltage gain is uniform because resistor value are independent of frequency change and at the high frequency votage gain falls.
The frequency on an amplifier response curve which is greater than the frequency for peak response and at which the output voltage is 1/√2 (that is, 0.707) of its midband or other reference value.
Class C tuned amplifier is a large signal tuned amplifier that amplifies high power signals of the radio frequency range. The amplifier is said to be Class C if the output cycle obtained is less than half a cycle of the full input cycle. This means the transistor remains active for less than half a cycle so that only that much part of the input waveform is reproduced at the output with amplification. For the remaining part, the transistor remains inactive.
Yes, but it will be less efficient than one designed for FM.
no.
if wave amplitudes are equal ,will high frequency waves carry more or less energy than low frequency waves
High frequency (high pitch) sounds have a higher frequency than those of lower pitch. The air molecules of a high frequency sound, vibrate back and forth much more frequently.
they are a high frequency
UHF (Ultra High Frequency)
An amplifier amplifies voltage or current. The most basic amplifier consists of a transistor where a signal is fed into the base and is output to the emitter or collector. For simple, low frequency applications (not RF), it may be simpler to use an operational amplifier (op amp) than designing your own amplifier. Also, the data sheets provide very helpful schematics for creating an amplifier. A very common one is the 741; these are also fairly cheap.