ibrahim03
Full Member level 1
power supply spike filter 7805
I want to control a single phase induction motor(used in a water pump) with my 89S51 uC. The problem is that as the motor draws a very large current at start it causes a momentary voltage drop on the main supply. As I want to use a power supply made with a transformer,bridge,capacitor and a 7805,connected to the main supply, to give power to the uC I am worried that it might reset the microcontroller when the motor is switched on. Also I am using a 12V relay so I have to use a 7812 as well.
I plan to use a 220V/25V transformer in my supply. Will it work without resetting the uC?
Are there any precautions that I should Observe?
I want to control a single phase induction motor(used in a water pump) with my 89S51 uC. The problem is that as the motor draws a very large current at start it causes a momentary voltage drop on the main supply. As I want to use a power supply made with a transformer,bridge,capacitor and a 7805,connected to the main supply, to give power to the uC I am worried that it might reset the microcontroller when the motor is switched on. Also I am using a 12V relay so I have to use a 7812 as well.
I plan to use a 220V/25V transformer in my supply. Will it work without resetting the uC?
Are there any precautions that I should Observe?