caption: The image shows a circuit diagram of a DC to DC converter with a resistor and a voltage regulator. The text written on the diagram reads "Voltage Regulator Diagram" and there is a number on the left side of the image. The circuit diagram is composed of various components such as resistors, capacitors, transistors, and diodes, all connected together to form a complex network. The resistor is connected to the voltage regulator, which is used to regulate the current flowing through the circuit.