3 V buffer (CB7142E)

This 3 V rail to rail buffer was found in a National Semiconductor documentation. The gain is unit.

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Magnetic Pickup Amplifier (CB4950E)
This circuit was found in a 1980s documentation. The operational amplifier is of a common type at the...
Gain-10 Operational 741 (NI014E)
This simulated circuit uses a 741 (Operational Amplifier), but other operational amplifiers can be...