Feb 5, 2003 · Adjustments to the carrier frequency from 2kHz to 6 Khz made very little difference. Tweaking the controls and tightening connections, etc. seem to have reduced the vibration somewhat, but the 30 Hz peak is still the highest peak in the spectrum.

Feb 7, 2003 · The reason is that they take into consideration all frequencies involved up to several kHz. If you want to measure the RMS-Value of the fundamental you can use a low pass filter consisting of a suitable RC-combination to remove the switching frequency.

Jul 18, 2005 · I generally share the signal and power ground together for analog(and mixed circuits <1 KHz).Does this practice introduce noise in the system. The circuits many times does not work if I separate them, so I am forced to do it to make it work. Am I missing something about designing here.

Oct 31, 2024 · IR is in the THz range and ultrasonic is above about 20 kHz . Upvote 0 Downvote. May 8, 2008 #7 IRstuff

Jul 8, 2005 · As far as Cannons' Technology, it is simply a case of their 12.5 Khz signal being shunted to ground due to the low impedance of the caps at that frequency (which is the reason for the blocking units).

May 29, 2002 · It sounds like a core heating thing. To be able to judge if that is the case, one needs to look for capacitors (or long cables) to resonate with. Reactor/capacitor combinations often have a tendency to ring somewhere between 5 and 20 kHz and that is an extremely effective frequency when it comes to induction heating.

Mar 27, 2004 · Yes. It makes quite a difference. The Q will go down the sink if you get a single shorted turn, regardless of where in the coil. The Operahouse method could be applied easily, especially if an elevated frequency is being used. Something like 10 kHz seems to be right.

May 16, 2007 · The early electronic meters measured the peak current and scaled it to guess what the RMS may be. Now when a motor starts there is a high inrush in the first cycle or so that varies greatly depending on the point on the wave that the switch was closed.

Aug 7, 2006 · I am testing plc equipment over 25kV power lines using inductive clamp couplers. I find that data transfer speeds are higher in the direction of the load. I intuitively understand why but I don't have a technical explanation. Also I would like to know if …