Zener diodes in reverse breakdown state exhibit a characteristic where, despite the current varying over a wide range, the voltage across their terminals remains relatively constant. Utilizing this characteristic of zener diodes, a simple DC voltage stabilization circuit can be formed. As shown in Figure 5-84, the zener diode VD is connected in parallel with the load resistor RL; the voltage across VD is the output voltage U0, and R1 serves as the current-limiting resistor. The zener diode operates in the reverse breakdown state, with its reverse breakdown voltage being the stable voltage U2. At the UZ point, the voltage remains relatively constant despite the current varying over a wide range. Aeronautical Power Supply
The Simple Stabilized Voltage Circuit features a simple circuit design; however, the DC stabilized voltage power supply's output voltage is not adjustable and the output current is limited by the voltage regulator diode, making it suitable only for applications requiring a low output current.
