Oh, thats a good idea. Id seen something similar before, but it only just clicked in my head, I have a few 60va toroid's with blown secondary's. I can just roll my own secondary. That could be super handy with valve projects, needing all kind of weird voltages. In the past I have just used a collection of multi-tapped off the shelf transformers connected back to back, to get the required voltages. I used to think transformers and inductors such archaic technology, but I have come to love the process of easily being able to add or remove turns to really dial your circuit in. you cant buy a 27.3uh inductor, but you can make one ;-D Another excellent source of DIY transformer parts is a microwave oven transformer, it is easy to cut out the high voltage winding with a grinder, and then wind your own secondary. Ive used one with great success to run a 12v car subwoofer amp, drawing about 80A at peak. Im sure my neighbours were un-impressed, but I was. and my organs were liquid, which was the idea...
Hehe, yeah i dont know why i didnt done that sooner😅 like you say, i had/have many projects with tubes and struggled to find a good AND cheap transformer for it. I just tryed it once and it just opened another whole world😂
What you can do is get an old halogen light transfrormer they are usually 11.5V, what i do is have a smaller 500VA variac controlling the primary voltage, going a bit over 230V wont damage the transformers and it also gives you fine regulation since directly heated tubes are way more sensitive on their filaments, also take in account voltage drop when the coil is operating, you may need to plug the filament transformer into a different outlet
Thats the reason why i wound a transformer, that have a exact voltage, so no need for halogen transformers🙂 But yeah that is also a way to do it. Yes, i have a 3 phase power supply and use a different phase for the heater.
![Blox Fruits Dragon Rework Update [Full Stream]](http://i.ytimg.com/vi/EqDAp8udhm0/mqdefault.jpg)
Oh, thats a good idea. Id seen something similar before, but it only just clicked in my head, I have a few 60va toroid's with blown secondary's. I can just roll my own secondary. That could be super handy with valve projects, needing all kind of weird voltages. In the past I have just used a collection of multi-tapped off the shelf transformers connected back to back, to get the required voltages. I used to think transformers and inductors such archaic technology, but I have come to love the process of easily being able to add or remove turns to really dial your circuit in. you cant buy a 27.3uh inductor, but you can make one ;-D
Another excellent source of DIY transformer parts is a microwave oven transformer, it is easy to cut out the high voltage winding with a grinder, and then wind your own secondary. Ive used one with great success to run a 12v car subwoofer amp, drawing about 80A at peak. Im sure my neighbours were un-impressed, but I was. and my organs were liquid, which was the idea...
Hehe, yeah i dont know why i didnt done that sooner😅 like you say, i had/have many projects with tubes and struggled to find a good AND cheap transformer for it.
I just tryed it once and it just opened another whole world😂
What you can do is get an old halogen light transfrormer they are usually 11.5V, what i do is have a smaller 500VA variac controlling the primary voltage, going a bit over 230V wont damage the transformers and it also gives you fine regulation since directly heated tubes are way more sensitive on their filaments, also take in account voltage drop when the coil is operating, you may need to plug the filament transformer into a different outlet
Thats the reason why i wound a transformer, that have a exact voltage, so no need for halogen transformers🙂
But yeah that is also a way to do it.
Yes, i have a 3 phase power supply and use a different phase for the heater.