Designers of power supplies and battery chargers are faced with many requirements, driven by the need to minimize manufacturing cost while maintaining standards of product safety. A key component in ...

Dubbed the “pin 1 problem” (pin 1 is shield in XLR connectors) by Neil Muncy, common-impedance coupling has been inadvertently designed into a surprising number of products with balanced interfaces.

In a balanced op-amp circuit, the op-amp inputs see equal impedances looking into the circuit. Balanced circuits provide better performance by cancelling some input errors and have a simple R F /R I ...