You need 3.9 ohms 5% at 20W.
But nobody makes two 1.95 ohms 5% 10W resistors for you to connect in series and nobody makes two 7.8 ohms 5% 10W resistors for you to connect in parallel.
You need 3.9 ohms 5% at 20W.
But nobody makes two 1.95 ohms 5% 10W resistors for you to connect in series and nobody makes two 7.8 ohms 5% 10W resistors for you to connect in parallel.
You could use two 8R2 10W resistors or four 12R 5W resistors in parallel.
EDIT:
Another option is to use a network of two 5W 3R9 resistors in series connected in parallel (four in total), I'll post a schematic if I've not made myself clear enough.
You could use two 8R2 10W resistors or four 12R 5W resistors in parallel.
I worked out what resistance it would be to connect two 8.2 ohm resistors in parallel and it came too 4.1 ohm
would there be any great difference if i used a 4.1 ohm instead of a 3.9 ohm?
You could use two 8R2 10W resistors or four 12R 5W resistors in parallel.
I worked out what resistance it would be to connect two 8.2 ohm resistors in parallel and it came too 4.1 ohm
would there be any great difference if i used a 4.1 ohm instead of a 3.9 ohm?