John A wrote:
"Dave" wrote in message
...
What do you do for resistors if you can't get carbon composition in the
ratings you need?
Do what the professionals do - use film resistors. Concerns about inductive
effect at HF are greatly exaggerated. There are rarely as many "turns" as
often suggested. ( cf. Radcom Jan 2007, p58, fig 1! )
As the person who wrote that article, I strongly agree.
where can I get carbon composition resistors these days?
They are still available. Typically, Farnell offer 220R to 4K7 at 1W - but
they are quite expensive.
And obsolete, because for every application there is now a better
alternative - most often, metal film.
--
73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek