@earnamint Voltage drop is the only way to really, really know what's happening in a circuit. If we assume (correctly 99.9% of the time) that there's only one load per circuit, then nothing in the circuit other than the load should drop voltage. If the voltage drop across (ACROSS means (+) of the load to the (-) of the load) is full voltage then there can't be a wire problem - it has to be the load. If the voltage is less than full voltage, then the only cause must be added resistance.
Actually, voltage is electrical energy. A resistor dissipates the energy that would otherwise make a lightbulb bright - that's what a resistor does. Voltage is pressure, as you say, but if you read any good book on basic electrical fundamentals, you'll see that voltage, or EMF, is described as the energy that causes current to flow. The symbol I used in the illustration isn't AC - it's a fuse. You are correct if you're talking about an AC source, but it would require a circle around it. Thanks.
Hi everyone, I'm a proffesional tech who uses Dan's methods, and they work! His way of troubleshooting has made me a better tech. Check out his website, you won't be sorry. Keep on putting out more videos Dan, this is a great idea.
Can you send schematics on that testing circuit board you made. Just like what you used to make it and stuff? It would help me with my learning of circuitry. schumacher162@msn.com
So, a fault may be found in the circuit path in one or more components or in the earth path of a circuit, say a lose, rusty, earth terminal bolt.
earnamint 1 month ago
@earnamint Voltage drop is the only way to really, really know what's happening in a circuit. If we assume (correctly 99.9% of the time) that there's only one load per circuit, then nothing in the circuit other than the load should drop voltage. If the voltage drop across (ACROSS means (+) of the load to the (-) of the load) is full voltage then there can't be a wire problem - it has to be the load. If the voltage is less than full voltage, then the only cause must be added resistance.
bivideo7 1 month ago
You can't call a voltage drop an ENERGY loss. More accurate to call it a pressure drop.
PD is potential difference, pressure again.
Your input voltage source is an AC voltage. It should be DC, best shown as the symbol for a battery.
dondenter 7 months ago
Actually, voltage is electrical energy. A resistor dissipates the energy that would otherwise make a lightbulb bright - that's what a resistor does. Voltage is pressure, as you say, but if you read any good book on basic electrical fundamentals, you'll see that voltage, or EMF, is described as the energy that causes current to flow. The symbol I used in the illustration isn't AC - it's a fuse. You are correct if you're talking about an AC source, but it would require a circle around it. Thanks.
bivideo7 7 months ago
You can't call a voltage drop an ENERGY loss. More accurate to call it a pressure drop.
PD is potential difference, pressure again.
dondenter 7 months ago
Great video! Voltage drop is key to electrical diagnostics, and you did an awesome job!
wyattmccandless 8 months ago
This and two more videos
/watch?v=XPzHrJdrkQE
/watch?v=KI_Cnjua0Kk&feature=mfu_in_order&list=UL
helps me clearly understand what is voltage, current and resistance :)
stasyszz 10 months ago
Hi everyone, I'm a proffesional tech who uses Dan's methods, and they work! His way of troubleshooting has made me a better tech. Check out his website, you won't be sorry. Keep on putting out more videos Dan, this is a great idea.
busjockey1 10 months ago
Can you send schematics on that testing circuit board you made. Just like what you used to make it and stuff? It would help me with my learning of circuitry. schumacher162@msn.com
aigis12345 1 year ago
great vid..thank you
momottzx3126 1 year ago