« previous next »
Pages: [1]   Go Down

Author Topic: Older green resisters.  (Read 507 times)

0 Members and 1 Guest are viewing this topic.

Offline Hammer_651Topic starter

  • Newbie
  • Posts: 6
  • Country: au
Older green resisters.
« on: September 29, 2024, 06:31:52 am »
 Hi all. Can anyone tell me what type of resistors are in this PCB from a 1980 Multi-meter please. They have size but not sure of wattage.
Thanks.
H.
Logged
 

Offline madires

  • Super Contributor
  • ***
  • Posts: 8175
  • Country: de
  • A qualified hobbyist ;)
Re: Older green resisters.
« Reply #1 on: September 29, 2024, 11:37:59 am »
The greenish grey ones should be film resistors. No idea if carbon or metal film. I'd guess, the smaller ones are 0.25W and the larger 0.5 or 1W.
Logged
 

Offline Gyro

  • Super Contributor
  • ***
  • Posts: 10017
  • Country: gb
Re: Older green resisters.
« Reply #2 on: September 29, 2024, 11:46:49 am »
My guess would be that, with very specific values like 140.6k, they are metal film. Unless broken, leave them as they are.
Logged
Best Regards, Chris
 

Offline Paul T

  • Regular Contributor
  • *
  • Posts: 71
  • Country: us
  • Mechanical Integrity Engineer
Re: Older green resisters.
« Reply #3 on: September 29, 2024, 09:02:39 pm »
Looks like older German-manufacture resistors marked with the older DIN standard for ohms as "D".

Perhaps the PCB and solder joints need more attention than the resistors?
Logged
Electronics always a core hobby. Sometimes I blog at KeepOnTesting.
 

Online TimFox

  • Super Contributor
  • ***
  • Posts: 8534
  • Country: us
  • Retired, now restoring antique test equipment
Re: Older green resisters.
« Reply #4 on: September 29, 2024, 09:05:24 pm »
I think that the "D" indicates tolerance, not ohms.
Probably 0.5%.
Logged
 
The following users thanked this post: I wanted a rude username

Offline Paul T

  • Regular Contributor
  • *
  • Posts: 71
  • Country: us
  • Mechanical Integrity Engineer
Re: Older green resisters.
« Reply #5 on: September 29, 2024, 10:28:29 pm »
You’re right.
Logged
Electronics always a core hobby. Sometimes I blog at KeepOnTesting.
 

Offline Poroit

  • Regular Contributor
  • *
  • Posts: 91
  • Country: au
Re: Older green resisters.
« Reply #6 on: September 30, 2024, 07:39:12 am »
G'day Hammer,

What switch ranges are these resistors associated with in your Multimeter?
Logged
 
Pages: [1]   Go Up
« previous next »

Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf

 


EEVblog Main Site EEVblog on Youtube EEVblog on Twitter EEVblog on Facebook EEVblog on Odysee