Kirchhoff's laws

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1. independent voltage source
a source whose voltage across its terminals is always the same regardless of the current through it
2. ideal independent voltage source (constant voltage)
batteries and voltage power supplies come close to idea under low to moderate currents
3. independent curren source (constant current)
the current out of the source is always the same regardless of the voltage across the terminals
4. active source vs passive sign convention
active voltage or current sources carry their own sign; ignore psc
5. in an electrical equivalent to fluid flow, voltage is
pressure, the fluid's equivalent to electrical flow
6. KVL
Kirchhoff's voltage law: the sum of voltages around any closed loop is zero
7. Kirchhoff's Tour
going arounda ny loop while summing its voltages
8. KT rule 1
when using KVL (kirchhoff's voltage law) around a loop, take the first sign encountered
9. KT rule 2
each independent loop must include at least one NEW branch not included in any other loop
10. KT rule 3
for n nodes, KCL gives (n-1) independent equations
11. KCL
Kirchhoff's current law: the sum of currents at any node is zero
12. node
the point at which two or more circuit elements join
13. essential nodes
where more than two circuit elements join
14. branch
a single path that connects one essential node to another
15. branch current method step 1
assign a current to each branch that DOES NOT have a current source.
16. branch current method step 2
assign a voltage to each element that does not have a specified voltage
17. branch current method step 3
apply KVL to each independent loop, ohm's law to each resistor, and KCL to each essential node
18. branch current method step 4
solve the simultaneous equations
 Author: instanthuman ID: 286377 Card Set: Kirchhoff's laws Updated: 2014-10-20 14:54:46 Tags: bioengineering dccircuits Folders: bioengineering Description: ch 9, kirchhoff's laws Show Answers: