What can be used to amplify an electronic signal?
An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the power of a signal (a time-varying voltage or current). Amplification is fundamental to modern electronics, and amplifiers are widely used in almost all electronic equipment.
Which device is used to amplify signals?
In telecommunications, a repeater is an electronic device that receives a signal and retransmits it. Repeaters are used to extend transmissions so that the signal can cover longer distances or be received on the other side of an obstruction.
What is the main function of a amplifier?
The device that amplifies something is called an amplifier. Of course, in the electrical circuit, including audio power amplifier, the various signals are exchanged as electrical signals. So, the amplifier is for amplifying the signal flowing in the electric circuit, and it amplifies the input current or voltage.
How to scale 30-50 MV signal to 5V?
Since you want to amplify 30-50mV to 0-5V, 5V/ (50mV-30mV) = gain of 250. Use the datasheet to select a gain resistor. For my example, G = 1 + (100k/Rg), so Rg = 100k/ (G-1) for 402 Ohms. These values need to be pretty exact, and when in doubt make it a little bigger and sacrifice a little span.
How to subtract 30 mV from a differential amplifier?
You can use a differential amplifier to subtract the 30 mV offset. So set V1 to 30 mV and choose R3 = 250 × R1. A problem with differential amplifiers is that R1 will load the resistor divider to get the 30 mV offset, so that you have to recalculate the resistors, and also V2 will have an input impedance which may distort the measurement.
How to set gain for a 30mV signal?
Anyway, as long as you take care with the above, the setup is pretty simple. Apply 30mV to the inverting input, signal to the non-inverting input and set gain for (5V – 0V) / (50mV-30mV) = 250. Here is a dual rail (+-5V) example circuit with the LT1789 InAmp:
Can a amplifier smooth out a RF signal?
So the answer is yes; you can build an efficient amplifier which amplifies the RF signal and smooths it at the same time. Look for schematics depicting a “tuned class C RF amplifier stage”, or look up the topic in an introductory electronics text.