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  • sharing signal and power ground - Circuit design | Eng-Tips
    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
  • Plastic material which is permeable for IR (infra red) signals 3 - Eng-Tips
    IR is in the THz range and ultrasonic is above about 20 kHz Upvote 0 Downvote May 8, 2008 #7 IRstuff
  • Possible reasons for VFD line reactor failure? - Eng-Tips
    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
  • Eng-Tips is the largest engineering community on the Internet
    I have available an old HP Spectrum Analyzer Tuning frequency, Bandwidth, Scan Width and Input Attenuation controls are available on the HP 8554L RF section The IF HP 8552B section provides bandwidth gain selection and detection I would like to determine the SSB Phase Noise of a signal
  • Faraday Cage Shielding by Frequency 4 - Eng-Tips
    That said, it is very plausible that the submarines picked up only the H-field with their antennae, which had to be quite small in comparison to the 17,2 kHz (wavelength around 17 km) used by at least one of these stations See
  • Grounded vs ungrounded capacitor banks 1 - Eng-Tips
    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)
  • Can I get meaningful data from dried seafloor samples 2 - Eng-Tips
    I think that I can get proper core samples of about 60 to 90 cm length at low cost to our project Longer cores will be costly to get In the next few days, we will be doing some 3 5 KHz sonar work, which should give a pretty good indication of the deeper sediments and stratifications to see if the deeper soils are similar to those at the surface
  • BIL rating and surge protection 1 - Eng-Tips
    Definitely a different study; makes the protective relay coordination study look like a piece of cake Insulation coordination studies look at the voltages achieved during transient events, transients that happen in the 10s of kHz or higher frequency and require much more detailed models of the system under study
  • full-bridge PFC - Circuit design | Eng-Tips
    Hello, I am designing a full-bridge active power factor corrector for a 600W SMPS The circuit diagram is as follows:- I cannot use a standard boost converter type of PFC as the power level is too great MOSFETs 1 4 come on together …and 2 3 are the other pair which come on together





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