Hi I need to inject low frequency ripple (250 mV - 1000 mV, 100 Hz - 5 kHz) on DC power supply (5V and 12V). Can any one suggest a vendor who makes such equipment, or details to put one together. Currently I am using a fixture designed years ago by someone in my company, but it really distorts the waveform at lower frequencies. I will appreciate any type of leads. Thanks. Regards, Ravinder Server PCB Development Hitachi Global Storage Technologies Email: Ravinder.Ajmani@xxxxxxxxxxxxxx ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu