This transducer converts two or more inputs
of DC voltage or current into proportional
load independent DC current or voltage at
output with galvanic isolation between input
and output.
This transducer is used mainly as an summating
and isolating element in telemetering, computer
and control systems.
The input signals are summated by a precision
operational Amplifier. This signal is fed
to a chopper circuit, which drives an isolating
transformer. The output of the transformer
is synchronously rectified and filtered.
The filtered output is fed to a buffer driver
which can be factory set to provide various,
types of load independent output proportional
to the input. The input and output circuits
are powered by an isolated supply derived
either from an AC auxiliary transformer
(for AC auxiliary supplies) or from a DC
/ DC power converter (for DC auxiliary supplies).
