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Meanings of preamplifier in English

We have no meanings for "preamplifier" in our records yet.
Usage of preamplifier in English
1
Adjustments to the theory are described to account for preamplifier noise contributions.
Pubmed
2
But it was many years later, using a low noise GASFET preamplifier.
The Dawn of Amateur Radio in the U.K. and Greece: A Personal Vie...
3
To make things even clearer, a preamplifier boosts the signal to the television.
Wired
4
I was hoping to make some Moonbounce contacts, but at that time it was very difficult to construct low noise preamplifiers.
The Dawn of Amateur Radio in the U.K. and Greece: A Personal Vie...
5
Preamplifiers with fixed gains of 10(5) VA and custom built amplifiers with variable gains are used for signal amplification.
Pubmed
Preamplifier through the time