Hi all,
New to electronics but need a power supply to supply 18v AC and 5v DC. It's got to give enough power for up to 50 2.5v 30mA LEDs on the 5v DC out and enough to the 18v AC to charge a capacitor discharge unit.
I have no idea how much current the capacitor discharge unit requires.
Below is a 5v DC circuit diagram I found on the web and redrew adding the 18v AC spur.
So here's my problem.
1. How do I work out what VA I require ???
2. Will this spur addition work or do I find a two output transformer ???
Angie
New to electronics but need a power supply to supply 18v AC and 5v DC. It's got to give enough power for up to 50 2.5v 30mA LEDs on the 5v DC out and enough to the 18v AC to charge a capacitor discharge unit.
I have no idea how much current the capacitor discharge unit requires.
Below is a 5v DC circuit diagram I found on the web and redrew adding the 18v AC spur.
So here's my problem.
1. How do I work out what VA I require ???
2. Will this spur addition work or do I find a two output transformer ???
Angie