In
measuring and control circuit where a direct
connection of current carrying circuit is
not possible, a galvanic separation is necessary
to have an interference-free operation.
This transducer converts input 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 amplifying
and isolating element in telemetering, computer
and control systems. The input signal is
buffered / amplified / summated (as per
the requirement) by a precision operational
Amp. 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).
