Content Summary
The Ratio Transformer
The ratio transformer is sometimes referred to as an IVD, an Inductive Voltage Divider. As suggested
by its name the ‘simple’ task of the ratio transformer is to divide the voltage across the resistance
thermometer Rt and a reference resistor Rs, which carry a common current, and therefore measure the ratio Vt / Vs, which is the same as the ratio Rt / Rs. So the heart of an ASL AC bridge is a super accurate voltage divider.
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