Ed, have a look into automotive power simulators. Manufacturers: Toellner http://www.toellner.de Em-Test http://www.emtest.de Argantix is also worth a look: http://www.argantix.com California Instruments (same company as Argantix) as well. Best regards, Michael Michael Nagel Senior Staff EMC Test Engineer Embedded Computing
Emerson Network Power T +49-89-9608-0 F +49-89-9608-2376 [email protected] www.emersonnetworkpower.com/embeddedcomputing Emerson Network Power - Embedded Computing GmbH, Lilienthalstr. 15, D-85579 Neubiberg/Landkreis München, Deutschland / Germany. Geschäftsführer Josef Wenzl, Amtsgericht München HRB 171431, VAT/USt.-ID: DE 127472241 ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Price, Edward Sent: Montag, 1. Dezember 2008 18:03 To: Untitled Subject: DC Coupled Amplifier I would like to get a modest capability to do some of the ramped power quality tests defined in MIL-STD-704. Typically, I would want to be able to apply various DC voltage inputs to a test specimen, and then slew those voltages following the typical dV/dT requirements. Typical exposures might be 28 VDC for 30 seconds, then ramping to 50 VDC in 10 milliseconds, holding 50 VDC for 5 seconds, then ramping to 12 VDC in 40 milliseconds, etc. The problem I have is that all of my power supplies are too slow to track the ramps, and even when they get close, I am seeing capacitor charge/discharge curves rather than straight ramps. So I have been thinking that maybe what I want is a DC coupled amplifier. Perhaps one possibility is the automotive aftermarket, where those rude idiots buy those thousand watt boom boxes that they use to rattle my house when they drive past. I think they now use Class D switchers for those amplifiers. Does anyone have any suggestions about where I might look? Ed Price [email protected] <blocked::mailto:[email protected]> WB6WSN NARTE Certified EMC Engineer & Technician Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (FAX) Military & Avionics EMC Is Our Specialty - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]>
