How to measure equivalent resistance question

150

01:51:09

I cannot solve this using only series resistance and parallel resistance equations. I can solve almost every resistor circuit with those two equations unless it contains this network of resistors.

published 7 years ago

selman

7 years ago

Method 1. Convert PI to Y, http://everycircuit.com/circuit/4899413872082944 then http://everycircuit.com/circuit/5237705360539648

selman

7 years ago

Method 2. Circuit Analysis, http://everycircuit.com/circuit/5244067817717760

kiani

7 years ago

Fold it.

hurz

7 years ago

As @selman said, you need to understand how to transform a star- into triangle-configuration and wise versa. Check this for an example with equal resistors which is trivial “Star Triangle Transformation“ http://everycircuit.com/circuit/5630900825227264 this transformation will enable you to breakup any resistor network into your simpler 2 formulars you already know. Google gives you the full transformation formulas in case of unequal resistors. Hope this helps.

jason9

7 years ago

@selman, your circuit analysis option is basically just putting an ohmmeter across the circuit. That’s not the point here. I do like the delta-wye reconfiguration though!

selman

7 years ago

The circuit analysis method is actually useful in "hand and paper" mode... Where you want to emulate an ohmmeter. And is prefereble than the first one if the network is more complex.

2ctiby

7 years ago

http://everycircuit.com/circuit/6371584108658688

jason9

7 years ago

@2ctiby, thank you for the guide! I now know how to easily convert from delta to wye.

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