Jump to content
ELFORUM - Forumul electronistilor

Intrebari rezistente de putere


Recommended Posts

Buna ziua

 

Trebuie sa inlocuiesc rezistenta RB50 (50W) :   http://www.ate-electronics.com/img/09 RB.pdf

 

Ma gandeam sa comand  de tipul  HS50 :    https://www.ohmite.com/assets/docs/acl_hs1.pdf

 

Dar nu inteleg ce reprezinta parametrul din tabel notat cu  "Temp. rise with heatsink (W)" (in primul PDF - pag 1)  si   "Typical surface rise HS mounted"  (in al doilea PDF - pag 2). 

HS=heatsink

 

 

Deasemeni in acest PDF:   https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=1773277&DocType=DS&DocLang=English

 

Nu inteleg la pag 3  de ce in graficul al doilea tmperatura pentru THS75  se ridica mult mai putin decat la THS50

 

 

Va multumesc

Link to comment
  • Replies 1
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

1. Este vorba de acelasi parametru in ambele pdf-uri: Cresterea temperaturii la suprafata rezistorului montat pe radiatorul standard cu fiecare watt disipat. Din eroare a fost scris W la unitatea de masura, corect este K/W.

2. Din motive constructive THS50 se incalzeste mai mult decit THS75 si poate lucra mai cald fara sa ii fie afectata durata de viata.

Link to comment

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.Terms of Use si Guidelines