# Are these two schematics the same? (Amp circuit)

Are these two schematics the same? The lower one is the original diagram. Can I rewire it to look like the top one? The chip is LA4597, if you might ask.

• The point of a schematic is to provide information of how components are connected with each other, not how they will look in real life. So to ask if you can rewire something to make it look like a preferred schematic doesn't exactly make sense. But yes, those two drawings contain the same information. These are unpolarized capacitors, right?
– user103380
Sep 18 '18 at 2:36
• @KingDuken But will they function the same? I'm sorry, I'm new to electronics. Sep 18 '18 at 2:40
• Yes, they will function the same because in both instances, the capacitors are being connected to the switch, ground, and the IC pin. The only difference is that you just moved down the capacitors on the drawing... That's literally all you did lol :)
– user103380
Sep 18 '18 at 2:41
• This is what the question boils down to: If I place a shoe on my head and the shoe is upside down, do I still have a shoe on my head? Sep 18 '18 at 2:43
• One output of a schematic is a netlist. The two schematics have identical netlists, so in that sense they are the same. Sep 18 '18 at 2:54

Think of a theoretical "node" (or "net") as a section or trace that is all of the same "equivalence". Note that the word "node" can also be used to specifically refer to where connections are made, but for my answer, I will be using node to mean "net".

For example, if we consider wires and traces to have 0 resistance/capacitance/inductance, then all wire between two 10Ω resistors is the same "node", because no matter where you connect something between the two resistors, it will have the same effect on the circuit. If you put a switch in between two components, you have split the node in to two separate nodes. It doesn't matter where lines connect to each other on a schematic, so much as it matters which node they connect to.

I have highlighted the three major nodes in your circuit as blue, green, and purple.

It can be seen that in both circuits:

• The blue node connects to a capacitor, IC pin 5, and a switch.

• The green node connects to the other capacitor, IC pin 8, and the other side of the switch.

• The purple node connects both "other" ends of the two capacitors. I drew dots simply to show that both grounds nodes are actually the same node, connected.

FYI: Schematics are mostly for showing which components are connected to which node. Thus they can, and often are, re-drawn as desired. A circuit "layout" is more so for showing the physical circuit.

If your drawing were intended to be a layout, and we consider that nodes are not truly 0Ω, there could be a difference between the two circuits, but that is outside of the context and scope of your question.

• I feel stupid for creating a hybrid. Sep 18 '18 at 4:32