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Entry  Thu Aug 20 00:21:51 2020, gautam, Update, Electronics, First look at HV coil driver IMG_8724.JPGtimeDomain.pdfHVampNoise.pdf
    Reply  Sun Aug 23 23:36:58 2020, gautam, Update, Electronics, First look at HV coil driver IMG_5379.JPGstabilityCriterion.pdf
       Reply  Wed Aug 26 16:12:25 2020, gautam, Update, Electronics, Test mass coil current requirements coilCurrents.png
       Reply  Tue Sep 1 15:39:04 2020, gautam, Update, Electronics, HV coil driver oscillations fixed testSetup.pdfHVampNoise_driven.pdf
          Reply  Thu Oct 22 11:14:47 2020, gautam, Update, Electronics, HV coil driver packaged into 2U chassis HVampNoise_driven_chassis.pdfHVampNoise_dispUnits.pdfD1900163_measurementSetup.zip
             Reply  Thu Oct 22 13:04:42 2020, rana, Update, Electronics, HV coil driver packaged into 2U chassis 
                Reply  Thu Oct 22 22:01:53 2020, gautam, Update, Electronics, HV coil driver packaged into 2U chassis DACnoiseFilterGain.pdfDACnoiseFilterNoises.pdf
                   Reply  Fri Oct 23 09:03:43 2020, anchal, Update, Electronics, HV coil driver packaged into 2U chassis 
             Reply  Thu Nov 12 14:55:35 2020, gautam, Update, Electronics, More systematic noise characterization powerSupplyNoise.pdfcoherence.pdf
                Reply  Thu Nov 12 15:40:42 2020, Koji, Update, Electronics, More systematic noise characterization 
                   Reply  Mon Nov 16 00:02:34 2020, rana, Update, Electronics, More systematic noise characterization 
                      Reply  Wed Jan 20 10:13:06 2021, gautam, Update, Electronics, HV Power supply bypassing bypassCaps.pdfIMG_9079.jpgIMG_9078.jpgHVampNoise_driven_chassis.pdfprintCoilCurrents.pdf
                         Reply  Mon Feb 1 12:30:21 2021, gautam, Update, Electronics, More careful characterization HVPS.pdfHV_testckt.pdftotalNoise.pdf
                         Reply  Wed Feb 10 21:14:03 2021, gautam, Update, Electronics, Production version of the HV coil driver tested inputDiffRecTF.pdfLVnoises.pdftotalNoise.pdftimeDomainTests.pdf
                            Reply  Fri Feb 26 16:31:02 2021, gautam, Update, Electronics, Production version of the HV coil driver tested with KEPCO HV supplies totalNoise_KEPCO.pdf
                               Reply  Fri Feb 26 20:20:43 2021, Koji, Update, Electronics, Production version of the HV coil driver tested with KEPCO HV supplies 
                                  Reply  Sat Feb 27 17:25:42 2021, gautam, Update, Electronics, Production version of the HV coil driver tested with KEPCO HV supplies 
                                     Reply  Thu May 20 16:56:21 2021, Koji, Update, Electronics, Production version of the HV coil driver tested with KEPCO HV supplies P_20210520_154523_copy.jpg
Message ID: 15677     Entry time: Mon Nov 16 00:02:34 2020     In reply to: 15676     Reply to this: 15773
Author: rana 
Type: Update 
Category: Electronics 
Subject: More systematic noise characterization 

true. also try to choose a cap with a goow high frequency response. In the Electronics Noise book by Ott there's some graph about this. I bet you good do a Bing search and also find something more modern. Basically we want to make sure that the self resonance is not happening at low frequencies. Might be tought to find one with a good HF response, a high voltage rating, and > 1uF.

Quote:

Yes. The datasheet has a recommendation circuit with 10uF caps. Companies are careful to show reproducible, reliably functional circuit examples on datasheets. So, if the caps are there you should try to replicate the design.

Quote:

Additional bypass capacitors? I use 0.1 uF, 700V DC ceramic capacitors as bypass capacitors close to the leads of the PA95, as is recommended in the datasheet. Can adding a 10uF capacitor in parallel provide better filtering? I'm not sure if one with compatible footprint and voltage rating is readily available, I'll look around.

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