Thanks to everyone who gave me feedback about the 2KHz whine from my HP-5060A. It appears to be the nature of the design and I'm not quite willing to try and re-design the oven controller to convert it from 2KHz AC to DC.
I guess my 5060A will continue live in the back room where it's not heard much. -Brian, WA1ZMS -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Frequency Standards & Services Sent: Wednesday, January 02, 2008 1:21 PM To: Time Nuts List Subject: Re: [time-nuts] 5060A question This was one of the reasons that HP eventually went to the DC oven controller. Even the early 5061A had this same problem. The 5060A and the early 5061As had an AC oven controller. When they changed to the DC controller, it probably saved a lot of people from insanity. some of the other reasons were the transformer taps that had to be changed when a new tube was installed, parts issues improved design, manufactureability, etc... Chuck Chuck Norton Frequency Standards & Services 2727 E. Palmer Park Blvd. Ste. 100 Colorado Springs, CO. 80909-5068 719-228-0540 Voice 719-228-9009 Fax _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
