Thyristor shifting autotransformer AC power supply circuit

The circuit consists of two LM339 comparators and two CD4070 XOR gate thyristors, along with additional components such as an autotransformer exchange regulator. It also features overvoltage and undervoltage protection. The control range can be adjusted by modifying the potentiometer RPi or changing the position of P.

The described circuit is a versatile voltage regulation system that utilizes LM339 comparators to monitor voltage levels. The LM339 is a quad comparator that can compare two voltage levels and output a signal based on the comparison. In this application, it is used to detect both overvoltage and undervoltage conditions, providing a means to protect connected devices from potential damage due to voltage fluctuations.

The CD4070 XOR gate thyristors are employed to control the switching mechanism in the circuit. The XOR gates can be used to implement logical operations that determine when the thyristors should be activated or deactivated based on the output from the LM339 comparators. This logic allows for precise control over the power delivered to the load, ensuring that it operates within safe voltage limits.

The autotransformer exchange regulator serves as the main component for voltage regulation. It adjusts the output voltage based on the feedback received from the comparators. By varying the turns ratio of the autotransformer, the circuit can maintain a stable output voltage even when the input voltage fluctuates.

The presence of a potentiometer (RPi) allows for manual adjustment of the control range, enabling users to fine-tune the circuit according to specific requirements. Additionally, the position of P can be altered to achieve different operational characteristics, providing flexibility in the circuit's performance.

Overall, this circuit design combines the functionalities of voltage monitoring, logical control, and voltage regulation, making it suitable for applications where maintaining a stable voltage is critical. The incorporation of overvoltage and undervoltage protection enhances the reliability and safety of the system, ensuring that connected devices are safeguarded against electrical anomalies.It consists of two LM339 comparator and two CD4070 XOR gate thyristors and other components autotransformer exchange regulator, the circuit also has overvoltage and undervoltage protection. Adjust the potentiometer RPi or change the P position, the control range can be changed.