You observed that when you connect the output of a synchronous motor to the 220V side of a 0-12V transformer, the secondary side provides 12V AC, which is then rectified and filtered using a bridge rectifier and a 450V 15µF capacitor. This setup successfully powers a 3V/6V DC motor. However, when you remove the transformer and directly rectify the synchronous motor’s output, the DC motor does not run.This happens due to several electrical and load-matching factors, which are explained in detail below.
---
1. Voltage and Current Mismatch
Your synchronous motor produces more than 600V AC, which after rectification would give DC voltage exceeding 800V.
The DC motor operates on 3V-6V and cannot handle such high voltage directly.
A transformer steps down the voltage from 600V AC to 12V AC, making it safe and usable for rectification and motor operation.
Why Doesn’t the DC Motor Run Directly?
The high voltage (600V+) does not mean sufficient current is available.
The motor requires a certain amount of current to start. If the power source has high voltage but very low current, the motor may not receive enough energy to turn.
The transformer matches impedance and increases the available current at a usable voltage level (12V AC).
Музыка
Фильмы
ТВ Шоу
Категории видео
