- Joined
- Jan 21, 2010
- Messages
- 25,510
No, there is no simple way.
And there is no reason to need to have all your currents positive (or indeed, all of your voltages). If you discover the signs of voltage and current differ in a resistor then you have problems Not so for a voltage or current source.
If you now note the voltage drops across each resistor, and after deciding that a (any) node is nominally 0V, you might that the current (conventional or otherwise) does not flow in the direction you think it does.
This might make you wonder how your equations work, given that they were (apparently) predicated on current going in a particular direction.
The answer for you would lie in doing this calculation again, using a method of creating the equations that does not rely on anything more than the basic Kirchoff's laws. I know I'm banging on about this, but maybe there's a reason.
And there is no reason to need to have all your currents positive (or indeed, all of your voltages). If you discover the signs of voltage and current differ in a resistor then you have problems Not so for a voltage or current source.
If you now note the voltage drops across each resistor, and after deciding that a (any) node is nominally 0V, you might that the current (conventional or otherwise) does not flow in the direction you think it does.
This might make you wonder how your equations work, given that they were (apparently) predicated on current going in a particular direction.
The answer for you would lie in doing this calculation again, using a method of creating the equations that does not rely on anything more than the basic Kirchoff's laws. I know I'm banging on about this, but maybe there's a reason.