Final Answer:
In many cases, the control circuit requires a separate control transformer to ensure proper voltage supply.
Step-by-step explanation:
The use of a separate control transformer is often necessary for the efficient functioning of control circuits.
Control circuits operate at lower voltages compared to the main power circuit, and a control transformer is employed to step down the voltage to the appropriate level for these circuits.
This separation helps in maintaining the integrity of the control system by preventing interference with the higher voltage of the main power supply.
The control transformer plays a crucial role in providing a stable and controlled power source for devices such as relays, timers, and other components within the control circuit.
This separation also enhances safety by isolating the control circuit from the higher voltages present in the main power supply, reducing the risk of electrical hazards.
In summary, the use of a separate control transformer is a common practice in control circuits to ensure they receive the required voltage for proper functioning, and it contributes to the overall safety and efficiency of the electrical system.