Jump to content
ELFORUM - Forumul electronistilor
yo9hrb

datasheet

Recommended Posts

Salut! CO-257 este echivalenta cu 2K2M,dar mai buna,in sensul ca la aceiasi tensiune de alimentare anodica si de ecran puterea este ceva mai mare.CO-242 la fel,sint mici diferente intre ele.Pe vremuri regretatul YO8DD lucra cu un emitator echipat cu CO-242 in oscilator,urmat de un CO-257 in final.Schema a aparut intr-o revista Radioamatorul prin anii 56,parca.Pe schema in dreptul simbolurilor tuburilor era trecut(2K2M).Atit pot sa-ti spun,nu stiu daca te ajuta.Cu stima,Sandu.

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • 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