EGR 224/Circuit Building and Measurements

This page will contain some tips and pictures for the EGR 224 Labs on Circuit Building and Measurements. It has been updated for Spring 2022.

Schematics

These are Tinkercad representations of how you should build your physical circuits. Your wiring should generally match these. Note that the top left resistor is $$R_{1ka}$$ and the bottom left resistor is $$R_{2.2ka}$$.

Note in the pictures below that the pink wires do not actually exist - they are internal to the PBB. The brown wire in the top picture may be orange for you; in either case, it is meant to connect the subnode attached to $$R_{1ka}$$ and $$R_{2.2ka}$$ to the subnode attached to $$R_{1kb}$$ and $$R_{2.2kb}$$; it is the wire through which $$i_y$$ flows. In the second figure, note that the wire has been replaced my the multimeter in ammeter mode. The blue wire in the figure may be purple for you - it is meant to connect the ground of the PBB and the bottom of $$R_{2.2k}$$ to the bottom of $$R_{1kb}$$; the negative voltage source is internally connected to the same ground (which is why the pink wire in the drawing will not show up in your circuit).

Voltage Measurement

Current Measurement