MT140-009

• 13

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Resistive Bridges and Resistive Bridges and Ladders Ladders Resistive Ladders Ex 2.13 homework R-2R Ladder This is an n-stage ladder with ‘n’ series resistances of value R and ‘n+1’ shunt resistances of value 2R. Typical application is in the Digital to Analog Conversion.

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Resistive Bridges and Resistive Bridges and Ladders Ladders 1. If we stand at the left of a node and look towards the right, the equivalent resistance seen between the node and ground is always R, regardless of the node. 2. The voltage at the node k (k = 1,2,3,…..,n) is related to that at the node k-1 immediately to its left as 3. Letting i k = v k /2R and i k-1 = v k-1 /2R yields a similar relationship between adjacent shunt-arm currents.

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• Spring '10
• Sohail

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