The tubes on my Melody i880 amp need to be replaced. The amp uses one 101D vacuum tube that seems to be pretty rare and 'expensive'. Can I replace this tube with alternative tube?
If not, any suggestions to were to find a budget 101D?
As the 101D is such a weedy (Ia max 12mA), low gain (mu 6, gm 1mA/V), thirsty (heater 4.5W) triode I can only imagine that either the regulator has a very peculiar circuit or the 101D is there for marketing purposes.SpreadSpectrum said:It appears that it is used in power supply regulation.
I found this, I think this circuit for or similar to the i880.
Maybe this clarifies something?