logo Welcome, Guest. Please Login or Register.
September 23, 2019, 07:26AM
Home Help Search Login Register
News: Visit a member's site: http://zanchetta.net/echecs/  (Alain Zanchetta)

  Chess Computer Community
  General Category
  Discussions about Chess Computers
(Moderators: Endspielgott, Overtom, bobosse)
  Capacitor ratings for Chess Challenger8 ?
previous next
Pages: [1] Reply Notify of replies Send the topic Print 
   Author  Topic: Capacitor ratings for Chess Challenger8 ?  (Read 1589 times)
Kostea
Newbie
*

Offline

Posts: 38



View Profile
Re:Capacitor ratings for Chess Challenger8 ?
« on: February 13, 2011, 02:59PM »
Reply with quote

TerryG basically nailed it.

You need a ceramic capacitor of 0.1 microFarad at 250 Volts (also known as '100 nanoFarad' or '100 nF'). You can buy any ceramic capacitor marked as type: COG, NP0, X5R, X7R, Z5U, Z5V, etc.

In general, any ceramic capacitor between 10 nF - 100 nF are going to be fine for your particular application.

Z5V means:
Z = -10 degree C (minimum allowed temperature)
5 = +85 degree C (maximum allowed temperature)
V = +22 to -85 percent (capacitance change depending on ambient temperature)
This is about the lowest quality of ceramic capacitors ever made.
They used cheap ceramic capacitors because for decoupling (eliminating switching noise) it is not necessary to have a very accurate value.

Regards,
Kostea
Report to moderator Logged
mga1103
Newbie
*

Offline

Posts: 2

I love Boardnation!

View Profile
Re:Capacitor ratings for Chess Challenger8 ?
« Reply #1 on: February 13, 2011, 11:03AM »
Reply with quote

Perfect.  Thank you. 
Report to moderator Logged
TerryG
Jr. Member
**

Offline

Posts: 63

I love Boardnation!

View Profile E-Mail
Re:Capacitor ratings for Chess Challenger8 ?
« Reply #2 on: February 13, 2011, 10:23AM »
Reply with quote

    Hi,
          My CC8 has the same caps, look like ceramic disc type used roughly 1 per chip for decoupling . See link at the bottom. But the markings look strange.  Z means -20 +80% (not that accurate!!). I measured one out of circuit to be about 50nF, but usually they would be 100nF, so I reckon accuracy not too good, they do deteriate over the years.

.1Z50v is (0.1uF = 100nF) Z (tolerance) 50volts.
      So a 100nF any tolerance (you will surely get better than 80%) rated at 50volts would presumably suffice. Buy a few they are quite cheap.

                                Terry

in UK see : -
http://www.maplin.co.uk/decoupling-ceramic-disc-capacitors-318

or just type in 'capacitor markings' on google : -

http://www.google.co.uk/webhp?sourceid=navclient&ie=UTF-8#sclient=psy&hl=en&rlz=1R2ADSA_enGB392&site=webhp&q=capacitor+markings&rlz=1R2ADSA_enGB392&aq=2&aqi=g4g-o1&aql=&oq=capacitor+&pbx=1&fp=a85ada561363a6b5
Report to moderator Logged

TerryG
mga1103
Newbie
*

Offline

Posts: 2

I love Boardnation!

View Profile
Capacitor ratings for Chess Challenger8 ?
« Reply #3 on: February 11, 2011, 04:49AM »
Reply with quote

I need to replace a capacitor in a Chess Challenger (8).  Anyone know the rating of the large brown caps?  The only marking on them are ".1250V" and "Z5V" which I believe are voltage and temp/tolerance values.

Thanks in advance.
Report to moderator Logged
Pages: [1] Reply Notify of replies Send the topic Print 
previous next
Jump to:  

Login with username, password and session length

Chess Computer Community
Get your Ad Free Message Board at Boardnation!   © 2013 Boardnation  Web hosting by Nubis