Author Topic: Teardown: Standard Resistors  (Read 67095 times)

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Offline notfaded1

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Re: Teardown: Standard Resistors
« Reply #200 on: February 27, 2020, 02:20:18 am »
Here's some of mine... first is esi dekabox db62

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Offline notfaded1

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Re: Teardown: Standard Resistors
« Reply #201 on: February 27, 2020, 02:22:25 am »
Second is venerable General Resistance RTD-100

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Offline notfaded1

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Re: Teardown: Standard Resistors
« Reply #202 on: February 27, 2020, 02:23:39 am »
Next is Ohmite Decade-Ranger

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Offline notfaded1

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Re: Teardown: Standard Resistors
« Reply #203 on: February 27, 2020, 02:27:21 am »
I have more but need to take pics... amazing the variations in the designs inside and craftsmanship.  :-+  I have a Dekavider RV622A I've never opened before still with a 10V reference attached to it from an old CAL lab I wanna open.  For as old as it looks it was pretty on.  I'm not sure if they (the lab) made the top part or if this was some product someone sold?
« Last Edit: February 27, 2020, 02:44:06 am by notfaded1 »
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Online Vgkid

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Re: Teardown: Standard Resistors
« Reply #204 on: February 27, 2020, 04:04:37 am »
Thanks for the teardowns, i was always curious what the esi low ohm decades looked like.
It looks like there are several GR rtd simulator owners here.
So you bought the rv622a mystery combo :)
If you own any North Hills Electronics gear, message me. L&N Fan
 
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Offline Edwin G. Pettis

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Re: Teardown: Standard Resistors
« Reply #205 on: February 27, 2020, 04:39:31 am »
No that grey chassis is a home grown attachment, not made by ESI.
 

Online Vgkid

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Re: Teardown: Standard Resistors
« Reply #206 on: February 27, 2020, 06:41:52 am »
I could easily tell it was not esi  made.
If you own any North Hills Electronics gear, message me. L&N Fan
 

Offline notfaded1

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Re: Teardown: Standard Resistors
« Reply #207 on: February 27, 2020, 11:40:36 am »
Thanks for the teardowns, i was always curious what the esi low ohm decades looked like.
It looks like there are several GR rtd simulator owners here.
So you bought the rv622a mystery combo :)
I'll have to post some 3458 measurements of the mystery combo.  I spent a while last night working on raspberry pi3 with latest kernel getting Keysight 82357B GPIB working.  Thanks for your guide TiN it helped me look in the right direction.  Getting the kernel source version correct so I could compile kernel modules was the trickiest part.

Bill
« Last Edit: February 27, 2020, 12:30:43 pm by notfaded1 »
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Offline notfaded1

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Re: Teardown: Standard Resistors
« Reply #208 on: February 27, 2020, 12:37:06 pm »
I new the top part wasn't made by ESI but it almost looks factory produced.  Both the 10V reference and the 100:1 divider have matching cases on the back.  From preliminary tests it's pretty solid.  I'm sure the Dekavider won't be giving my F720A a run for its money but it seems to work pretty well.

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Offline serg-el

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Re: Teardown: Standard Resistors
« Reply #209 on: March 16, 2020, 09:01:20 pm »
An interesting site.  A lot of information.
http://etoysbox.jp/1_TestEquipment/17_Std_R/Std_R.htm
 
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