Kojih sad 1 oma i manje? Pa po vridnostima napona napajanja i struje mirovanja sa banetovih shema (32V, 2,5V), to su tipicni radni uvjeti za 8-omsko opterecenje. U skladu sa time san i nacrtal ovu shemu koju san objavil.

Za 1 oma i manje je bitno drukciji pristup, sa daleko manjim naponom napajanja. Ali isto i sa daleko vecom strujom. Znaci i sa skroz drugin vridnostima komponenti a vrlo virovatno i sa ubacivanjem jos jednog ruskog snagatora ka pobude za izlaznoga.

Optimizirat amp za 8 oma i za manje od 1 oma istovremeno je besmisleno delat jer bi to u najmanju ruku znacilo stravicno visoku disipaciju izlaznog tranzistora pri nekom od opterecenja. I sa time povezane i termicke i financijske probleme. Nije nemoguce to storit ali isplativost je jako upitna, najblaze receno.

Kako san vec rekal, drage voje cu pomoc va ovome ali bi stvarno najprije volil znat za ca je to namijenjemo, da li za standardnih 8 oma ili za neku egzotiku sa manje od 8 oma. Ca su to neki riboni, planari ili..... ?

Loftin - White , reproduction by Alan Douglas

In the course of writing an article on the Loftin-White circuit which appeared in Vacuum Tube Valley issue no.6 (Winter 1997), I wanted an actual amplifier to illustrate the article and for testing. While some breadboard models were illustrated in the original 1930 Radio News articles, there were no definitive plans published, and essentially no samples survive. So I created my own, using period components and following "breadboard" wiring practice. The only item not from 1930 is the 25K Ohiohm cathode resistor: even the oak board was a bit of office furniture that my father brought home after a remodeling job in the 1940s. And I did hide new mylar caps inside the old high-voltage filter cans.

The full account is in the VTV article (www.vacuumtube.com): the history of Loftin and White's work, the (non)-acceptance of their design, my own building project, and a complete bibliography of all Loftin & White and related magazine articles from the 1930s.