This circuit is used in magnetic tape recorders, having been found in documentation in the 1960s. The circuit uses Japanese transistors, and the critical components are transformers.
We found this configuration, which appears on other of our circuits and with the same or different...
This is the traditional configuration for a limit comparator or window comparator, using two...
With this circuit it is possible to regulate a source of up to 9 A using 3 LM350. The integrated...