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What's on your workbench ????
What's on your workbench ????
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Old 31st October 2020, 04:59 PM   #661
mbrennwa is offline mbrennwa  Switzerland
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What's on your workbench ????
suzyj, what's up with that phone? Love it! Those things don't work anymore where I live.
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Old 31st October 2020, 10:05 PM   #662
suzyj is offline suzyj  Australia
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It still works for receiving calls, but I need a DTMF dialler to make calls.

I’ve been meaning to get a pulse to DTMF converter for ages.
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Old 31st October 2020, 10:27 PM   #663
rsavas is offline rsavas  Canada
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I still have a pulse line, so my old rotary dialer still works. Bell wants $3.25/month for tone service, I can do without :-) I have all the Bell phone features too, just have to switch the phone to tone and away you go ...
I recall using some old Motorola CMOS parts to make some phones and ringers
MC145740, TP5089
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Old 8th November 2020, 09:10 AM   #664
suzyj is offline suzyj  Australia
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My 3585B is on the bench, for my annual game of “Find the popped tantalum”.

Click the image to open in full size.

It was hiding underneath, on the input board:

Click the image to open in full size.
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Old 16th July 2021, 03:23 PM   #665
jackinnj is offline jackinnj  United States
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What's on your workbench ????
@Demian -- you might be amused watching this Youtube by "Marco Reps" on fixing up a Fluke 732A which went out of spec: Fluke 732A DC Voltage Standard & low cost DIY attempt - YouTube
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Old 16th July 2021, 06:00 PM   #666
1audio is offline 1audio  United States
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What's on your workbench ????
The 732A is a pain to work inside the "oven". What I thought was a failure seemed to be a bad connection to a thermistor. Getting all the stuff back in with the foam insulator in place -not fun.

I'm really reluctant to change any parts that have not failed simply because it starts from an unknown state then. All the metrology stuff depends on long term predictability. The 732A seems to have the best track record, better than the newer 732B. Once you change something you open up the potential for problems. Still I would like to swap for a better battery/charger solution but it would need to be proven.

This reminds me that I need a fresh cal check on it soon.

Also on my bench now- The Optimation AC110 calibrator for calibration (a long story) 2 Fluke 932A AC meters, Boonton 9200A power meter HP 8116a function generator. Shortly- fix a funky oscillator in a Boonton 1120. No bench space left.
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Old 22nd July 2021, 04:36 AM   #667
BKnut is offline BKnut  Australia
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Quote:
Originally Posted by jackinnj View Post
@Demian -- you might be amused watching this Youtube by "Marco Reps" on fixing up a Fluke 732A which went out of spec: Fluke 732A DC Voltage Standard & low cost DIY attempt - YouTube

I worked aside the standards calibration lab, their Fluke 732A was playing up with the weekly measurement data. After some close observation of the following weeks with the assistant to the Electronic Meteorologist, if was found that the assistant regularly had fish and chips on Fridays at the company's local canteen. The oils on his fingers contaminated the banana jacks and the measurement leads that would cause electrical leakage. I don't think Sherlock would have solved the mystery, it was funny but a serious matter. The assistant was told to wash his hands after lunch, particularly on Fridays
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Old 22nd July 2021, 04:40 AM   #668
BKnut is offline BKnut  Australia
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Quote:
Originally Posted by suzyj View Post
“Find the popped tantalum”
I found it, thanks for the photo
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Old 22nd July 2021, 05:17 AM   #669
BKnut is offline BKnut  Australia
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Quote:
Originally Posted by simon7000 View Post
Then forothe stuff I use notebooks with pages covered in conductive foam.
.
Brilliant idea there Simon, the IC folder would be very compact and easy to find.
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Old 22nd July 2021, 08:56 AM   #670
anatech is online now anatech  Canada
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What's on your workbench ????
Hi suzyj,
Yep, pretty easy to find those. But, there are so many just everywhere throughout!

Luckily I don't seem to go through failures like you might. My lab remains at about 20 °C, so that might be one reason.

-Chris
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