High impedance millivoltmeter (CB20611E)

We found this circuit in an old American documentation. The components are from that period and may present difficulties in obtaining them.

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Pulse Generator 2 (CB18968E)
We can produce pulses controlled through this circuit that can function as a shield if powered by a...
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Found in documentation from the 1980s, this amplifier uses an integrated circuit from the time....
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This circuit was obtained in a 1979 publication. The operational amplifier is of the type with...