ChatGPT: output impedance of a voltmeter? - Page 1
Forum section: electronics / general

author: hasmanean
author_rank: Newbie
timestamp: December 25, 2022, 07:06:46 pm
content: I'm new here, so I think this post belongs in the (possibly) "Dodgy Tech" forum. I asked ChatGPT (An artificial intelligence chatbot every is talking about) about the input impedance of a voltmeter, and it gave a (textbook) answer. So then I asked about the output impedance, and it gave a very similar answer. It seems technically correct enough...and sounds like someone who has memorized the answer out of a textbook the night before the exam...and practically screams out "knowledge and no wisdom"... but the last paragraph seems totally bonkers...has anyone ever wanted a high output impedance voltmeter to measure a high impedance circuit? I'd think all voltmeters should have a low output resistance, period.Chat snippet here fromhttps://chat.openai.com/chat.Q. what is the output impedance of a voltmeter?A. The output impedance of a voltmeter is a measure of the resistance to the flow of electric current from the voltmeter to the circuit or device being measured. A voltmeter with a high output impedance will have more resistance to the flow of current and will be less able to accurately measure low-impedance circuits. On the other hand, a voltmeter with a low output impedance will have less resistance to the flow of current and will be better able to accurately measure low-impedance circuits.The output impedance of a voltmeter is typically specified in the manufacturer's technical specifications or user manual. It is usually expressed in ohms (Ω) and can range from a few hundred ohms to several kilohms, depending on the specific model and its intended use.It's worth noting that the output impedance of a voltmeter can affect the accuracy of the measurements being made. In general, it is best to use a voltmeter with a low output impedance when measuring low-impedance circuits and a voltmeter with a high output impedance when measuring high-impedance circuits. This will help to ensure that the voltmeter is able to accurately measure the voltage without significantly affecting the circuit being tested.

author: mcovington
author_rank: Regular Contributor
timestamp: December 26, 2022, 03:52:32 am
content: Artificial stupidity has been achieved.Seriously: The strength of ChatGPT is the high quality of the text output (grammatical and generally well organized). But it has two serious flaws: (1) the output is often manifestly false or imaginary, and (2) when the output manages to be accurate, sources are not cited.

author: SL4P
author_rank: Super Contributor
timestamp: December 26, 2022, 04:12:55 pm
content: QuoteSounds like most of the technical documentation from a large communist country to the west of Taiwan.

author: Kalvin
author_rank: Super Contributor
timestamp: December 26, 2022, 04:53:19 pm
content: ChatGPT will generate also the following reply when asking "what is the output impedance of a voltmeter?":The output impedance of a voltmeter refers to the electrical resistance of the voltmeter when it is measuring a voltage. It is typically very high, on the order of several megaohms or even tens of megaohms. This high output impedance allows the voltmeter to have a minimal effect on the circuit being measured, which is important for accurate voltage measurements. It is important to note that the output impedance of a voltmeter is not a fixed value, but can vary depending on the specific characteristics of the voltmeter and the circuit being measured.ChatGPT displays these disclaimers "May occasionally generate incorrect information" and "May occasionally produce harmful instructions or biased content".

author: AVGresponding
author_rank: Super Contributor
timestamp: December 26, 2022, 10:37:39 pm
content: Quote from: Kalvin on December 26, 2022, 04:53:19 pmAren't those caveats that apply to all Musk's businesses?