Re: [time-nuts] hammond 77589

Hi Ed, From: Ed Breya e...@telight.com I just noticed one more thing - if the NTC thermistor in the schematic is the actual one that senses the oven temperature, then the oscillator and bridge are one in the same. If this is the case, then the oscillator amplitude could be proportional to

[time-nuts] hammond 77589

Hi all, Will someone know what it could be? http://www.stben.net/DSC_0338.JPG http://www.stben.net/DSC_0339.JPG Thanks for your help. Bye, Jean-Louis ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] hammond 77589

It's a part of an oven regulator. - Original Message - From: Jean-Louis Noel j...@stben.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tuesday, January 15, 2013 11:24 AM Subject: [time-nuts] hammond 77589 Hi all, Will someone know what

Re: [time-nuts] hammond 77589

Hi Jean-louis, It looks very much like the main crystal in a Symmetricom Rubidium unit that I tried changing a crystal in. In my case the crystal was made by Bliley. It is about the same size as the standard 8 lead TO-5 integrated ciruit case except that it had just three leads on the bottom

Re: [time-nuts] hammond 77589

...@stben.net Til: Discussion of precise time and frequency measurement time-nuts@febo.com Sendt: 2:24 tirsdag den 15. januar 2013 Emne: [time-nuts] hammond 77589 Hi all, Will someone know what it could be? http://www.stben.net/DSC_0338.JPG http://www.stben.net/DSC_0339.JPG Thanks for your help

Re: [time-nuts] hammond 77589

: Tuesday, January 15, 2013 11:24 AM Subject: [time-nuts] hammond 77589 Hi all, Will someone know what it could be? http://www.stben.net/DSC_0338.JPG http://www.stben.net/DSC_0339.JPG Thanks for your help. Bye, Jean-Louis ___ time-nuts

Re: [time-nuts] hammond 77589

...@yahoo.dk To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wednesday, January 16, 2013 12:47 AM Subject: Re: [time-nuts] hammond 77589 Hammond has been known to make transformers. My vote would have been for a balun (balanced to unbalanced transformer

Re: [time-nuts] hammond 77589

measurement time-nuts@febo.com Sent: Wednesday, January 16, 2013 12:47 AM Subject: Re: [time-nuts] hammond 77589 Hammond has been known to make transformers. My vote would have been for a balun (balanced to unbalanced transformer) as is often used in audio transmission lines, such as telephone

[time-nuts] hammond 77589

Probably a hermetically sealed inductor of some aort. (snip) Hi all, Will someone know what it could be? http://www.stben.net/DSC_0338.JPG http://www.stben.net/DSC_0339.JPG Thanks for your help. Bye, Jean-Louis -- Joe Leikhim Leikhim and Associates Communications Consultants Oviedo,

Re: [time-nuts] hammond 77589

Hi, From: WB6BNQ wb6...@cox.net Is your roughly the same size ? Do you know or have a picture of what it came out of ? It's 23.97mm diameter, 23.60mm height and weight 34.35gr R 1-2 and 2-3 = 13.56 ohms from 1-3 = 27.12 ohms. http://www.stben.net/sch.jpg I hope I don't have to open it!

Re: [time-nuts] hammond 77589

of precise time and frequency measurement Subject: Re: [time-nuts] hammond 77589 Hi, From: WB6BNQ wb6...@cox.net Is your roughly the same size ? Do you know or have a picture of what it came out of ? It's 23.97mm diameter, 23.60mm height and weight 34.35gr R 1-2 and 2-3 = 13.56 ohms from 1-3

Re: [time-nuts] hammond 77589

Since you measured the same R on opposite ends, it appears to be a center-tapped inductor. Since there's no input signal other than power in the schematic, it must be a low frequency oscillator. If you draw in the inductor on the schematic, it should make more sense. It could be that they used

Re: [time-nuts] hammond 77589

I just noticed one more thing - if the NTC thermistor in the schematic is the actual one that senses the oven temperature, then the oscillator and bridge are one in the same. If this is the case, then the oscillator amplitude could be proportional to bridge imbalance - if the NTC is being