Author Topic: Power Design 2005 Reference bad  (Read 2127 times)

0 Members and 1 Guest are viewing this topic.

Offline opa627bmTopic starter

  • Regular Contributor
  • *
  • Posts: 128
Power Design 2005 Reference bad
« on: April 01, 2015, 06:04:53 am »
Hi all,
I have scored a PD2005 from an auction for 50$. Long story short. The oven thermostat was bad that leads to long time heating in the oven and killed everything inside. When I opened up the oven, everything was burnt.
Anyway. I want to design a reference board based on LM399 or LTZ1000 but I have no clue where to start. It seems that the oven assembly also have a paired diff pair inside and some other stuff.
Any suggestions?
Thanks!


Regards,
Li
 

Offline BarryBreaux

  • Contributor
  • Posts: 13
  • Country: us
  • Electrical Engr, Control Systems Engr, Retired
Re: Power Design 2005 Reference bad
« Reply #1 on: February 20, 2023, 02:38:24 pm »
That is a long time ago!

I have the same issue on my bench now! Were you able to rebuild the oven?
Barry Breaux
 

Offline The Doktor

  • Regular Contributor
  • *
  • Posts: 185
  • Country: us
Re: Power Design 2005 Reference bad
« Reply #2 on: February 20, 2023, 05:37:28 pm »
Download the manual for a 5020, it's basically the same as a 4010 (similar to 2005?), but uses LM399 ref and an opamp to replace amplifier parts which were in oven. Should be a good starting point.
 

Offline BarryBreaux

  • Contributor
  • Posts: 13
  • Country: us
  • Electrical Engr, Control Systems Engr, Retired
Re: Power Design 2005 Reference bad
« Reply #3 on: February 21, 2023, 01:45:19 am »
Thank you sir!
Barry Breaux
 

Offline BarryBreaux

  • Contributor
  • Posts: 13
  • Country: us
  • Electrical Engr, Control Systems Engr, Retired
Re: Power Design 2005 Reference bad
« Reply #4 on: February 21, 2023, 03:46:35 am »
I got the manual for the 5020, but I don’t see an oven. Is there a previous version?
Barry Breaux
 

Offline The Doktor

  • Regular Contributor
  • *
  • Posts: 185
  • Country: us
Re: Power Design 2005 Reference bad
« Reply #5 on: February 21, 2023, 04:33:56 pm »
No, there's 2 versions floating around, but neither has heater. Look at the reference, the 5020 uses an LM399. The idea is to see how it's applied vs the ovened reference in the 2005.
 

Offline coppercone2

  • Super Contributor
  • ***
  • Posts: 11333
  • Country: us
  • $
Re: Power Design 2005 Reference bad
« Reply #6 on: February 21, 2023, 11:38:23 pm »
put a thermal fuse there, what a bad design.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf