A step up transformer can increase the voltage at the expense of lower current.ie power is the same
An amp with no power supply? No. Can't be done. An amplifier increases the current of the input signal, and to do so it needs power to do it with.
so you could amplify the signal without having to change the power source.
The sound produced by an electric guitar when played without an amplifier is very quiet and may not be easily heard, as the pickups on the guitar are not strong enough to amplify the sound.
To amplify the sound of a celesta, you can use a microphone placed close to the instrument's resonant chamber or sound holes. Connect the microphone to an amplifier or PA system to project the sound at a higher volume. Adjust the amplifier settings to achieve the desired level of amplification without introducing distortion.
A TV distribution amplifier is used to distribute television signals, such as cable TV signals, to several TVs, without losing power or signal coherency. Many for indoor use resemble simple signal splitters, but actually amplify the signal where needed before passing it on.
A transistor is an electronic component. By itself it has little use. An amplifier is a complete, functional circuit, generally made up of several components. A transistor can be a component part of an amplifier, however an amplifier may be constructed without any transistors (using vacuum tubes instead, for instance).
A low-pass amplifier having a bandwidth in the range from 2 to 100 MHz. Typical applications are in television receivers, cathode-ray-tube computer terminals, and pulse amplifiers. The function of a video amplifier is to amplify a signal containing high-frequency components without introducing distortion.
No.
The bandwidth of an amplifier refers to the range of frequencies over which it can effectively amplify signals without significant attenuation. It is typically defined as the frequency range between the lower and upper cutoff points, where the gain drops to a specified level, usually 3 dB below the maximum gain. A wider bandwidth allows the amplifier to process a broader spectrum of signals, making it suitable for various applications in audio, radio, and communication systems.
The amperage rating of the transformer in a 12V power supply cannot be changed. The size of the copper windings determine the power load (amps) it can handle and the point where the lead is tapped off of the windings determine the voltage. The only way to increase the amperage would be to tap closer to the core which would lower the voltage.If you need more amps you have to have a heavier transformer.
Electrons cannot flow in a particular direction(current)it moves randomly without external voltage or potential,hence there is no net electric current.hence we need a external potential to drift electrons in a particular direction.
An amplifier amplifies the small input signal to a high signal without changing its freqency.