Based on National Semiconductor's LM4130 reference circuit, this circuit was found in Internet documentation. The circuit has an output impedance of 1 Mohm.
We found this circuit in an American documentation of the 80's, being indicated for the test of...
This amplifier for instrumentation with differential input is from the factory manual of the...
This circuit is from old technical documentation, used to monitor the voltage of a 12 V battery. The...