PEC's

[john]

If they have the centralab numbers on them, I have a catalog that
shows the schematics and values for most....
Best
John


At 10:18 AM 8/2/01 -0700, Stewart D. Lyon wrote:
>Hi Mike,
>You should be able to reverse-engineer those things. Since there are five RC
>elements that give a total of 180 degs phase shift, each element would shift
>36 degs. The final R is outside the PEC -- on the grid of the oscillator. If
>one assumes that the Rs inside are the same as the terminating resistor,
>then the C would be of a value to give 36 deg of phase shift at the desired
>frequency using the terminating R. (820 & 630 pf ??)
>
>As an exercise, I did this calculation on the SB-101 PEC (where the values
>are given on the schematic) and it works out.
>
>Get your calculator out!!
>73, Stu W6CUX
>
>Who designed the SB0610?? Probably the same person that designed the HO-10.
>
>----- Original Message -----
>From: "Mike Shelton" <sheltonm at PHYSICS.UNC.EDU>
>To: <HEATH at LISTSERV.TEMPE.GOV>
>Sent: Thursday, August 02, 2001 7:46 AM
>Subject: PEC's
>
>
>> While everyone is on the subject of the PEC's , the SB-610 uses 2 of these
>> with different part no's for each. For the sake of asking anyone out there
>> know what values are in EACH PACKAGE.  I could use this info for some
>> Restorations-Repairs. Many Thanks to all.
>> --
>> Mike Shelton CET.
>>    ke4lgx
>> Electronic Technician III
>> UNC-Chapel Hill
>
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