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2015-01-05 03:44  
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This circuit provides 20 ?±0.1 dB voltage gain from 0. 5 to 25 MHz and ?± 3 dB from 70 kHz to 55 MHz. An LM733 video amplifier furnishes a low input-noise spec, 10-I`V typical, measured over a 15.7-MHz bandwidth.

The scale factor of the instrument can be preserved by using a trimmer R1 or a selected precision resistor, to set tbe circuit`s voltage gain to exactly 100.

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