приклади
Electric signals were measured on a set-up described previously, with the modification that a very low-noise homemade current preamplifier was used.
An amplifier probe hybridizes to a preamplifier forming a branched DNA complex and generating enough signal sites to be detected directly after labeling.
The microphone signal was amplified by a low-noise preamplifier and was processed by a two-phase lock-in amplifier.
The present invention uses a novel shock-sensing method that is both reliable and low-cost, using a modified head preamplifier to detect servo fields from adjacent disk surfaces, as well as the disk surface being written or read.
We generally call the first stage the preamplifier , though it may be the only amplification stage.
Other
M-translate