Wednesday, February 25, 2015

(Day 1) Solderless Breadboards: Open Circuits and Short-Circuits




Fig. 1
Overview :
This lab served as a very simple introduction to solderless breadboards and digital multimeters. We were asked to create four different scenarios with wire on the breadboard and to measure the resistivity (in ohms) using the multimeter.

What we did for each scenario:
Because the leads from the multimeter were too large to fit into the holes in the bread board, we had to use wires to extend out of the holes. We then measured the resistance of:
1. Two wires connected to different holes on the same node.
2. Two wires connected across the same row but on different halves of the breadboard.
3. Two wires connected to different holes on different nodes.
4. Two wires connected to both ends of a jumper wire across two different rows on the bread board.

Scenario 1 gave us a reading of 0 ohms which signifies a short circuit.
Scenario 2 (Fig. 2 below) gave no reading when connected with the multimeter, meaning that there was no current flow and therefore is considered an open circuit.
Scenario 3 gave no reading which meant an open circuit.
Scenario 4 (Fig. 3 below) gave a reading of 0 ohms suggesting a short circuit.

 Fig. 2

Fig. 3