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Preamplifier for oscilloscopes

Preamplifier for oscilloscopes
In many oscilloscopes, the most sensitive range is 2-5 mV, although it Is often possible to improve this to 1-2 mV by a variable gain control. To obtain even better sensitivtry, the present preamplifier, which has an amplification of about 10 (20 dB), may be found useful.
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