Guys let me explain my situation first...im a second semester student who is pursuing a diploma...so...i dont know much...hope u guys can help me out...thanks alot in advance
This is my problemesign a DC regulated power supply(AC to DC)that is able to display the digit 0 to 7 in an LED array for indication purpose.
These are the specs:
1. 3 control switches for digit display
2. input 240V r.m.s from TNB(its the power station name in my area)
3. The current in each LED is 10 ~ 20mA
4. Only discrete components allowed(means no IC...)
5. power indicator and necessary safety feature required.
well i manage to figure out the starting part....this is how it goes
1)step down transformer
2)full wave rectifier(bridge)
3)filter(capacitor)
4)zener diode(as regulator)
So...any help?
This is my problemesign a DC regulated power supply(AC to DC)that is able to display the digit 0 to 7 in an LED array for indication purpose.
These are the specs:
1. 3 control switches for digit display
2. input 240V r.m.s from TNB(its the power station name in my area)
3. The current in each LED is 10 ~ 20mA
4. Only discrete components allowed(means no IC...)
5. power indicator and necessary safety feature required.
well i manage to figure out the starting part....this is how it goes
1)step down transformer
2)full wave rectifier(bridge)
3)filter(capacitor)
4)zener diode(as regulator)
So...any help?