Mylar capacitors! Values? - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 5th January 2011, 01:29 PM   #1
diyAudio Member
 
uffearon's Avatar
 
Join Date: Apr 2010
Default Mylar capacitors! Values?

Hello
Iam deep down in fixing 2 Harman kardon 900+ recievers. Have some questions about componnents. I found a faulty transistor that I replaced on the tone control board. q607 a japanese transistor 2sa763 wl. took a 2sa1015 wich I hope works. While fixing it I found some MYLAR (polyester) capacitors with values written on them.I dont understand what it means!for example 124K50. on the schematics it only says 012.
On another mylar it says 104T50 on the schematics it says 0.1
Please help me to understand how to read values!
This is the manual
http://jbmanuals.free.fr/HarmanKardo...K900+%20sm.pdf
  Reply With Quote
Old 5th January 2011, 04:18 PM   #2
diyAudio Member
 
indianajo's Avatar
 
Join Date: Jan 2010
Location: Jeffersonville, Indiana USA
50 V caps are pretty usual in low power transistorize amps, that explains the numbers after the letters. 12 * 10E4 is 120000 picofarads or .12 microfarads. 10 * 10E4 is 100000 picofarads or 0.1 microfarad. See if you can find a tolerance somewhere, I would bet the .12 is at minimum +- 10%. Microfarads were abbreviated mf before 1980 and uf now, the changeover was ragged and depends on continent, language, and culture.
I think your manual is missing a decimal point on the 12. Unless the physical cap is about 8 cm long and about 3 cm diameter, it is not a 12 mf cap. That is a pretty expensive cap to find in a harmon kardon, anyway, not very likely.
__________________
Dynakit ST70, ST120, PAS2,Hammond H182(2 ea),H112,A100,10-82TC,Peavey CS800S,1.3K, SP2-XT's, T-300 HF Proj's, Steinway console, Herald RA88a mixer, Wurlitzer 4500, 4300

Last edited by indianajo; 5th January 2011 at 04:33 PM.
  Reply With Quote
Old 5th January 2011, 04:45 PM   #3
diyAudio Member
 
uffearon's Avatar
 
Join Date: Apr 2010
Thanks for the answer No the biggest mylar is about 1 cm high. Probably 0,1 micro farad
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help fix my soundcard! What values for crystal's load capacitors? cuibono PC Based 4 14th January 2011 01:45 AM
Taping the Mylar bshaw147 Planars & Exotics 1 3rd September 2008 08:55 AM
So I got some 6um mylar bigwill Planars & Exotics 7 15th April 2007 11:34 PM
From glass to mylar peterr Tubes / Valves 11 11th November 2003 01:19 PM
Can capacitors with different values and different votage Tony D. Solid State 5 5th October 2001 04:51 AM


New To Site? Need Help?

All times are GMT. The time now is 09:55 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2