This input circuit for meters, which can also be used as a shield, is intended for operation with very low frequency signals. The power supply must be symmetrical.
This circuit is from an English book from the 1980s. Transistors can be general-purpose types of...
This configuration appears elsewhere in this section on our website. The I integrated circuit...
We found this circuit in an old American publication from the 1980s. Transistors can be...