OK - I tried this. The Varta 3V batteries have welded on tabs normally for PCB mounting for memory
battery backup. But if these are bent at right angles they solder right in.
Now the new voltage of these is just over 3.2V, so R10/11 had to be increased from 120k to 390k.
(Calculation based on 3V was 348k)
And the unit works perfectly. It confirms that my SG503 is well within specification.
Craig
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-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Craig Sawyers
Sent: 26 October 2018 09:53
To: [email protected]
Subject: Re: [TekScopes] Tektronix 067-0625-00 Peak to Peak Detector Battery
OK - the correct physical size is 1/3 AA. Although tagged batteries of that size are available,
they all
seem to be rechargeable 1.2V.
But, the physically smaller 1/3 N (11.6mm dia, 10.8mm long) at 3V and solder tags is Varta
At 170mAh that should give about three years life at 7.5uA drawn. That is about half that of the
original
battery, which should have given 7-8 years' service (although Tek suggested that they be replaced
yearly).
Craig
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
Craig Cramb
Sent: 26 October 2018 03:52
To: [email protected]
Subject: [TekScopes] Tektronix 067-0625-00 Peak to Peak Detector
Battery
Anyone had to locate replacement batteries for this unit. Only marking on the battery is 1A.
Original Tektronix description is: 1.5V, 650MAH, Alkaline-Manganese
Dioxide Tektronix 067-0625-00 Peak to Peak Detector Battery Pictures on link with dimensions
required.
/g/TekScopes/album?id=76872
