This circuit is from an American 1967 documentation and can be implemented with modern equivalent transistors. The circuit serves as a Q multiplier.
We found this battery monitor in a 2005 Linear Technology application manual. The circuit uses...
This is a Serial In - Parallel Out or Serial Out [SIPO or SISO] shift register using the...
This General Electric circuit is from the 80's. The PUTs used in this meter are not common...