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Total 12 documents matching your query.

1. [AMPS] ripple current (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Fri, 5 Mar 1999 16:49:37 -0500 (EST); My catalog has a "Allowable ripple current vs. Ambient temperature" chart for the GQ series cap. Temperature +45 +60 +70 +85 +105 Coeffecient 2.47 2.37 2.17 1.67 1.00 So at 85 degrees the maximum all; /archives//html/Amps/1999-03/msg00114.html (8,741 bytes)
2. [AMPS] ripple current (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Fri, 5 Mar 1999 18:41:28 -0500; But following the lead of hams in general you missed some important points. Are those caps factory rejects Are they at the extreme ends of the tolerance specs? What are the tolerance specs since that; /archives//html/Amps/1999-03/msg00120.html (10,968 bytes)
3. [AMPS] ripple current (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Mon, 8 Mar 1999 08:10:57 +0000; The rms and peak currents depend on the ratio of source and load resistances and the capacitor value. For a decent high power PSU (bridge with capacitor input) the ratio should be in the regions of 1; /archives//html/Amps/1999-03/msg00158.html (8,756 bytes)
4. [AMPS] ripple current (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Mon, 8 Mar 1999 09:18:01 -0000; For what it's worth, many years ago, I did some measurements using a thermo-ammeter, and found that provided the capacitor was big enough to give negligible voltage drop on load, the measured ripple; /archives//html/Amps/1999-03/msg00159.html (8,786 bytes)
5. [AMPS] ripple current (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Mon, 8 Mar 1999 07:45:30 -0500 (EST); Wish I had time to look into it more, but a book I have "Industrial Electronics Handbook" by Cockrell states that RMS ripple current should be square root of 2 for 100 percent rectifier efficiency. W; /archives//html/Amps/1999-03/msg00163.html (10,041 bytes)
6. [AMPS] Ripple Current (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Tue, 9 Mar 1999 15:29:01 -0500; Maybe I missed something during the recent discussion. In the common voltage doubler PS as used in many amps, is not each capacitor subjected to 50/60 Hz rather than 100/120Hz as in a FWB ? If that i; /archives//html/Amps/1999-03/msg00194.html (8,435 bytes)
7. [AMPS] Ripple Current (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Tue, 9 Mar 1999 20:54:57 +0000; On a modern cap I think it makes very little difference - the inductance is low enough that the esr starts to rise only in the kHz region. Steve -- FAQ on WWW: http://www.contesting.com/ampfaq.html S; /archives//html/Amps/1999-03/msg00195.html (8,571 bytes)
8. [AMPS] Ripple Current (score: 1): Author: W8IK@ibm.net (Joe Subich, W8IK/4); Date: Tue, 9 Mar 1999 17:42:25 -0500; The common voltage doubler is a "full wave voltage doubler" ... as such the capacitor bank gets 120 Hz ripple. The charge gets piled on top of the stack on one half cycle and pulled out of the botto; /archives//html/Amps/1999-03/msg00196.html (8,441 bytes)
9. [AMPS] ripple current (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Wed, 10 Mar 1999 07:30:32 +0000; Ooops, got it wrong, trying to do things when half asleep. The graphs I have for Philips and Aerovox caps show the ripple current rating basically constant at low frequencies. Above 1kHz or so, the e; /archives//html/Amps/1999-03/msg00209.html (7,999 bytes)
10. [AMPS] Ripple Current (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 11 Mar 1999 14:37:05 -0000; Assuming the doubler is the 'full wave' one (i.e. two caps in series shunted across two diodes in series, with the ac between the junction of the caps and the junction of the diodes) each cap gets a; /archives//html/Amps/1999-03/msg00225.html (8,517 bytes)
11. [AMPS] Ripple Current (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 11 Mar 1999 07:30:03 -0800; ? Well put. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQ; /archives//html/Amps/1999-03/msg00227.html (8,498 bytes)
12. [AMPS] Ripple Current (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Thu, 11 Mar 1999 12:23:22 -0500; Tnx Peter. I seem to remember Tom Rauch commenting about extra capacitor stress in a FW doubler compared to a FWB. Also remember a rather heated discussion amongst the engrs at National that resulted; /archives//html/Amps/1999-03/msg00232.html (9,261 bytes)

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