2017年8月8日 · Inductivity is not an used term in EE (or at least i have never seen it, if anybody has, feel free to downvote add reference) My guess would be that the tables you refer to either are very old, and thus contain obsolete vocabulary, or were filled/updated by an operator who did not understand the words he was using.

Inductance in the primary of a transformer decreases as the load on the secondary increases. No it doesn't. It may seem like it does (because when loaded your transformer takes more current into the primary) but just imagine that the load you put on the secondary (say 1:1) ratio were applied to the primary - the current in the load would be …

What effect does the current have on the inductivity after crossing the saturation current? Inductance is defined as total flux produced per amp of current. As a core saturates you get less and less incremental flux produced for every amp - it is a gradual effect but again the manufacturer's BH curve indicates how the inductance can be expected ...

2016年7月2日 · 'Calculate' may prove difficult, in the absence of further information. To measure \$\small L\$, lock the rotor, apply a small input voltage step, and measure the time constant, \$\tau\$, of the resultant exponential stall current using an oscilloscope.

Lets say I want to calculate the inductivity of one of these capacitors. I know every capacitor has an ESR ESL $$ Z = R + \\frac {1}{jwC} + jwL $$ Can I use this formula? Im obviously missing the R

2016年9月21日 · The speaker impedance might be around 3~4 Ω at DC. When tested at 2Khz moving air, the inductive higher impedance is shunted by the air pressure load ( real impedance ) and rated at 8 Ohms at 0.5W

2019年8月25日 · The inductance barely changes with temperature, as this is defined by the coils geometry, e.g. its dimensions and number of turns, you can think of it as the diameter and length of the coil will increase slightly, this changes the flux density at the ends of the coils slightly,

2016年10月20日 · Not many brushless-DC motors have different d- and q-axis inductances; the only time you will find this is in a salient-pole PMSM (permanent magnet synchronous motor) with buried or interior permanent magnets.

2018年5月9日 · Now I need to find out the equivalent value of inductivity for this whole scheme. I know that for parallel circuits the equivalent inductivity value Le is: Le = ∑1/Lk = 1/L1 + 1/L2 + ... 1/Ln . and for the series circuits the Le value is: Le = ∑Lk = L1 + L2 + ... +Ln. How should I apply this formulas for this given scheme?

2016年4月14日 · I was wondering what the intuition was behind widening PCB traces to minimize the inductance between a trace and its ground plane. Many high speed design guides cite this without providing much of an