This circuit was found in a 1967 US documentation. The circuit applies to modern general purpose transistors. The circuit has no offset. The power supply must be symmetrical.
We found this circuit in the National Semiconductor Audio Handbook of 1977. The circuit produces...
This is a shunt circuit to be used on a multimeter, expanding its scales to measure high currents....
In the figure we have a precision differential amplifier found in the Linear Applications Handbook of...