Uses of Amplifier
An amplifier is used by various electronic devices to provide different amounts of amplification to its signals. Amplification of signals is needed because most of the signals are too small to run or drive the desired device.
Let’s take an example of a music system that uses an amplifier. An amplifier is used because the signals from the record or the c.d. are too small to drive the speakers. Thus, amplification of these signals allows the speakers to run. However, amplification is not a simple process. A single signal from the record goes through several stages in between the speaker and the record to get the right amount of amplification. Each time a signal is amplified it goes through a “stage" of amplification. There are many such stages in the whole process.
Another example of a device using amplifier is a radio receiver. In the radio receiver system, the signal picked up by the antenna is too small to be used by the radio. Thus, the amplifier in the system amplifies the signals before it is send to the detector. The detector separates the audio signals from the frequency and sends it to the radio speakers.
Thus almost all the electronic devices contain at least one step of amplification process. However, there are different types of amplifiers used according to the type, size and capacity of the device.
Having gone through the elementary basics of amplification, we will surely go into the technical nitty-gritty in the future articles.