The circuit in the figure uses two operational amplifiers: an LM101A and an LM102. Diodes admit equivalents and resistors do not have to be accurate. The power supply must be symmetrical.
This circuit monitors the current of a series of 40 V lithium battery packs connected in series....
This 80's documentation circuit includes an amplifier of the era. Used integrated circuits are...
This circuit is from a 1967 US publication. The configuration can serve as a basis for designs...