Draw the circuit diagram of voltage to current convertes and explain its working.
Answers
There are two types of voltage to current converter.
(a) Floating load
(b) Ground load
Here showing below floating load voltage to current converter. If the load of a circuit is not grounded, then it is called floating type load.
To explain this floating load type converter, we using a non- inverting amplifier where inverting terminal is connected with a feedback resistance with output of the circuit. A load voltage V is applied at the non-inverting terminal. At node B, the voltage will be same as that of A. (As per ideal Op-amp properties).
From The circuit, current I(B)⁻=0
Therefore, load current I(L) is due to load resistance. Load current is directly proportional to the input voltage Vin. This amplifier converter is also known as trans-conductance amplifier
