The power supply, in my case, is supposed to be a potentiometer that provides 20 volts at one output point and 10 volts at the other, both are brought to a current path, what happens in this case, as well as with the voltage itself.
Here, it talks about bridging the resistor, but I don't see any bridging because the current source IC was replaced by an open circuit. So, the current must return via R6, and no bridging took place. Why is bridging mentioned here? Additionally, I don't understand how the resistors can be short-circuited by the beta node?…
Hello, I have a problem with the following task: b) Describe the internal resistance at point A as a function of the potentiometer position X What I don't understand is what is meant by the internal resistance at point A. Does this mean the internal resistance of the potentiometer or how can I understand this?…
I once read that voltage is not what causes damage to the body, but rather current (amperage). It's true that the higher the voltage, the more current flows, and therefore the more dangerous it is. Based on the I=U/R formula. But what about alternating current, which uses a transformer to increase the voltage and reduce…
So I know that a phase shift (reactance) in an inductive load causes the current to be phase shifted and in a capacitive load the voltage to be phase shifted, which creates reactive power. But I thought about it a bit more and came to the hypothesis that with an inductive or capacitive load both…
Hello, I need help with a simple circuit: In order to get to Ua you would actually first have to combine the sources. Normally it would be a good idea to convert the 6 V voltage into a current source, but the 5 Ohm resistor is in parallel…. It is explicitly stated that the problem…
Hello friends, I need a good explanation for this topic. I know it from batteries: when they are connected in series the voltage is added, and when they are connected in parallel the current is added. However, is it the same with AC sources? If I connect two transformers in parallel, does the current capacity…
Probably a glaring gap in my knowledge (though I'm not an expert). We want to use a so-called source meter as a voltage source. Polarity is important; HI and LO are the correct outputs, but I only know + and -. What is the current direction? (Nothing can be found in the manual. Both could…
What would the circuit look like if I turned this circuit into a current source and what resistor should I use?
Hello, Why does the US have a 110-volt power grid? Sure, changing it now probably won't work, but otherwise. I once read that it's a safety issue, but the difference seems too small to be a breakdown voltage. But otherwise, it's the current that should be limited (fuse?) rather than the voltage.
Good morning, I have a problem. I have an amplifier with an on/off switch. When I turn it off, the amplifier doesn't turn off completely, and it consumes power. Because I have a battery in this amplifier, it runs out after a while, so I have a switch between the battery and the amplifier. The…
Can someone help me with the following problem? I've tried all of them, but the solution is still wrong.