fa 363c fa 665b wVisually, the colors used to help users identify the correct terminals are striking. The voltage and current indicator displays are also more modern.
Regarding the internal electronics, the protections that have made these devices so popular have been retained, and their performance has been enhanced. Thus, the FA 363C reaches 5 A in the main variable power supply and adds two fixed symmetrical power supplies of +/- 5V and +/- 15V.
The FA 665B is the result of expanding the FA-662 dual power supply to 5 A each and adding an auxiliary 5V/3 A supply. These can be used in series or parallel to double the delivered voltage or current. Furthermore, a switch has been included that allows cutting off the voltage output to the test circuit without accessing the device's controls.

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