Capacitor step-down, generally use Zener tube, I use it without it, 431...but it's bad,
I can’t figure out the reason, because the rectifier tube is also worn, and now I don’t know that the original rectifier tube is broken
Still wear it all at once, can't the 431 replace the Zener?
Janelle Posted on October 30, 2020
Three-terminal adjustable shunt reference source. Its output voltage can be arbitrarily set to any value in the range from Vref (2.5V) to 36V with two resistors. It can be used to replace Zener diodes in many applications, such as digital voltmeters and operational amplifier circuits. , Adjustable voltage power supply, switching power supply, etc.
Angie Posted on October 30, 2020
tl431 cannot be used in power supplies with large currents, and a 431 drive circuit should be added later.
Beatrice Posted on October 30, 2020
The output current capability of the 431 is limited.
