The No.1 Website for Pro Audio
Schoeps CMC3-5: values of the 2 impedances Dr1 and Dr2?
Old 30th July 2020
  #1
Schoeps CMC3-5: values of the 2 impedances Dr1 and Dr2?

I'm working on a project and as many, as example I got the Schoeps CMC3-5 schematics to work with.

I'm wondering what are the µH of the 2 impedances Dr1 and Dr2 into the DC/DC converter (please see attachement).

I was searching a lot on Google but I didn't find anything.

Could you help me please?

Thanks
Attached Thumbnails
Schoeps CMC3-5: values of the 2 impedances Dr1 and Dr2?-schoeps_inductances.jpg  
Old 3rd August 2020
  #2
Old 3rd August 2020
  #3
Lives for gear
 

IIRC they're just ferrite beads . . .
Old 10th August 2020
  #4
Quote:
Originally Posted by kirkus View Post
IIRC they're just ferrite beads . . .
Dr3 and Dr4 yes. But the other 2? It's an oscillator. Thus I suppose they have a value that's not a short circuit
Old 10th August 2020
  #5
Lives for gear
 

My apologies . . . should have looked more closely before posting. Looking in my files, I found bad photocopy of this circuit from years ago, and it looks like I've penciled in 150uH for Dr 1, and 68uH for Dr 2. These values seem to make sense for the circuit, but please don't take this as gospel. Hope it helps.
Old 18th August 2020
  #6
Quote:
Originally Posted by kirkus View Post
My apologies . . . should have looked more closely before posting. Looking in my files, I found bad photocopy of this circuit from years ago, and it looks like I've penciled in 150uH for Dr 1, and 68uH for Dr 2. These values seem to make sense for the circuit, but please don't take this as gospel. Hope it helps.
Thank you so much @ kirkus hopefully it will work with these values
📝 Reply
Topic:
Post Reply

Welcome to the Gearslutz Pro Audio Community!

Registration benefits include:
  • The ability to reply to and create new discussions
  • Access to members-only giveaways & competitions
  • Interact with VIP industry experts in our guest Q&As
  • Access to members-only sub forum discussions
  • Access to members-only Chat Room
  • Get INSTANT ACCESS to the world's best private pro audio Classifieds for only USD $20/year
  • Promote your eBay auctions and Reverb.com listings for free
  • Remove this message!
You need an account to post a reply. Create a username and password below and an account will be created and your post entered.


 
 
Slide to join now Processing…
🖨️ Show Printable Version
✉️ Email this Page
🔍 Search thread
🎙️ View mentioned gear
Forum Jump
Forum Jump