DC-10Mhz Amplifier for Oscilloscope


Posted on Mar 7, 2013

The DC-10 MHz amplifier shown below is identical for both scope channels. The input FET should be mounted directly on the adjustable attenuator switch for best frequency response. The vertical position pots, R27 and R51, change the dc level of the traces, but do not affect the ac signal. There is no fine (variable) gain adjustment in this circuit. The output voltage ranges from 0 to minus 15 volts. Modern op-amps from Elantec, Harris, or Analog Devices should be considered as a design alternative for the oscilloscope input amplifier shown on this page.


DC-10Mhz Amplifier for Oscilloscope
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