Currently I am designing a circuit for controlling motor. And I need to convert a 230Vac to 12Vdc for supply low voltage IC. In the past, because of low power consumption for IC, I just use some resistors and transistor for this convertion. ________ ___ C E 230Vac o-----| |---|_R_|--+----+------\ /-----o 12V output | diode | | | --- | bridge | --- | ___ B | | --- +-|_R_|--+ o-----|________| | | GND | 12v Zener | | GND
Now, I have changed some components and it need more current to drive it. And the past design is not enough to do so. Now, I want to know any similiar simply circuit can convert 230Vac to 12V dc with arround
200mA current.If I replace the transistor to the TO-220 7812, can it supply enough output for me to use? Thanks~