![]() I also like having Vac very close to needed in case of regulators because heat dissipation is easier, so psu becomes more durable. Some people even recommend this, can't say if it really prolonges tube life, for sure it works well if tube is heated enough, for me that means more than 5,5Vdc. I never had any problems with a bit lower than 6V. I think Gyraf has experiences with tubes at lower than 6,3V, maybe try and find his old posts about G7 like this. Later depends if you already have trafo and don't want to get much lower than about 6V, sometimes it is contrary. If going with regulator it would help having LDO and low drop diodes. Guess there are plenty for 1ch LA2A, mentioned calculations already done, although i suspect mostly for AC heating. Having two separated heater taps is quite nice, it allows playing a bit more getting needed voltages.Įven if it is one channel you might want to carefuly calculate required current, get custom transformer or something close stock. ![]() ![]() My experiences lately are mostly limited to custom toroids where i get almost exact secondary voltage because heater or any other currents are more or less known, so trafo has very close secondary voltage to what is needed. ![]() It depends on current from it and what tubes need, the problem with some loaded transformer is secondary voltage quite a bit lower from stated, which can also means more heat. Ime, getting enough voltage over the regulator, or filters for psu to function properly at 6Vdc will probably be impossible with 6Vac from power trafo secondary. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |