General > General Technical Chat
Why no Farad or Henry meter?
themadhippy:
--- Quote ---Here in GB it's hard to know which side of the pond one should stand on nowadays.
--- End quote ---
you obviously need a pond meter to give an indication of were you nee to be.
anyways back to the main event,could it be the size of the unit measured,very rarely do we measure 1 farad or 1 henry,its nearly always a fraction of the main unit.
joeqsmith:
--- Quote from: TimFox on November 27, 2023, 04:14:14 pm ---
--- Quote from: mawyatt on November 27, 2023, 03:43:05 pm ---We know, however we have Amp, Volt, Ohm and Watt meters, but no Farad or Henry meters??
Best
--- End quote ---
Perhaps the market is better for instruments with monosyllables in their name?
--- End quote ---
We used to use VOM similar to RLC. I think all of my meters are marked DCV/ACV for example rather than Volts. Takes up too much room.
antenna:
Amp, Volt, Ohm and Watt have the same implications irrespective of frequency. To make a similar meter with Henrys and Farads, the error from parasitics and self-resonances must somehow be accounted for. It is easier to pick a frequency and measure Ohms than it is to say with any certainty that this particular coil is 2.334uH at any frequency.
bsfeechannel:
--- Quote from: mawyatt on November 27, 2023, 04:26:15 pm ---Thank goodness someone got the gist of this :-+
--- End quote ---
So, back to your OP. In German, volt-, am- and ohmmeter are respectively called tension, current and resistance meter (Spannungsmessgerät, Strommessgerät/Strommesser und Wiederstandsmessgerät), but I think those are the formal names. I'm not sure how German speakers refer to their meters colloquially.
RoGeorge:
In the beginning, the capacitance was measured in Jars, because the first capacitors were in fact pickle jars filled with water, from the times when electricity was thought to be some sort of fluid, thus the jars that were filled with electricity by electrostatic machines.
1jar = 1111pF Source: https://en.wikipedia.org/wiki/Jar_(unit)
A battery of four water-filled Leyden jars, Museum Boerhaave, Leiden
Pic source: Wikipedia https://en.wikipedia.org/wiki/Leyden_jar
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version