Experience in using voltage regulator diode

Experience in using voltage regulator s

When using a voltage regulator, we should pay attention to the following aspects. The first is that it needs to be reversed in the circuit to stabilize the voltage. That is to say, the negative pole of the voltage regulator is connected to the high potential in the circuit, and the positive pole is connected to the ground potential. If it is reversed, it will burn the voltage regulator due to excessive current. The second point is that the voltage regulatordiode must be able to stabilize when the power supply voltage is higher than its regulated value. Speaking of this, I also recall today's maintenance of the health pot. The fault of this circuit is that the input voltage of the voltage regulator is too low, only 2.7V, due to the capacitor failure in the resistance and capacitance voltage reduction link of the circuit. Because the regulated value of the voltage regulator 1N4733 is 5V, it cannot reach its regulated value, Causing the inability to drive the microcontroller chip in the circuit board, resulting in the entire circuit not working properly. The third point is that if one voltage regulator cannot reach the voltage regulation value, multiple voltage regulators can be used in series, and it is important not to use them in parallel.