joneci,
The power transformer high voltage specification is 720V plate to plate; 360V to the center tap.
That means the loaded voltage is 509V peak plate to center tap.
The 5V4G has a 25V drop. 509V - 25V = 484V peak.
That 484V peak would be across the choke until the 100uF cap charges to 350V.
Then 484V peak - 350V = 134V peak across the choke.
Only problems could be poor insulation; or poor sealing of the laminations together (mechanical hum if they are not immersion sealed).
I never had a Tamron choke to try, but I would just build one monoblock and try it (just my faith that Tamron magnetics are quality built devices).
If anybody in your area has a Tektronix curve tracer, they can see what the choke does as voltage applied across the choke from the curve tracer is turned up. (curve tracers have a series resistor to limit the current).
A 15H choke has 11.3k Ohms inductive reactance at 120Hz.
I used to give technical support for Tektronix products, including curve tracers (If I had a Tektronix 370B curve tracer, I could make a living . . . testing parts for people across the US).
I am too brave, I do not do simulation software, I just build and test.
I am somewhere in the middle between the'simulator crowd', and our friend 'Tube_Lab.com' who blows things up . . . so you and I do not have to.
Trust but Verify anybody?
Tell us your experience with Tamron Chokes, please.
Note: Since the peak voltage to the 0.68uF input cap is 484V, you can see why a 600V or 630V cap is required there.
500V caps need not apply for that duty, too little voltage margin (what happens when your power company is lightly loaded and the mains voltage increases by 5% (OUCH!).
I can hardly wait to hear a report of how your 2024 Baby Ongaku mono-blocks sound in 2024.
The power transformer high voltage specification is 720V plate to plate; 360V to the center tap.
That means the loaded voltage is 509V peak plate to center tap.
The 5V4G has a 25V drop. 509V - 25V = 484V peak.
That 484V peak would be across the choke until the 100uF cap charges to 350V.
Then 484V peak - 350V = 134V peak across the choke.
Only problems could be poor insulation; or poor sealing of the laminations together (mechanical hum if they are not immersion sealed).
I never had a Tamron choke to try, but I would just build one monoblock and try it (just my faith that Tamron magnetics are quality built devices).
If anybody in your area has a Tektronix curve tracer, they can see what the choke does as voltage applied across the choke from the curve tracer is turned up. (curve tracers have a series resistor to limit the current).
A 15H choke has 11.3k Ohms inductive reactance at 120Hz.
I used to give technical support for Tektronix products, including curve tracers (If I had a Tektronix 370B curve tracer, I could make a living . . . testing parts for people across the US).
I am too brave, I do not do simulation software, I just build and test.
I am somewhere in the middle between the'simulator crowd', and our friend 'Tube_Lab.com' who blows things up . . . so you and I do not have to.
Trust but Verify anybody?
Tell us your experience with Tamron Chokes, please.
Note: Since the peak voltage to the 0.68uF input cap is 484V, you can see why a 600V or 630V cap is required there.
500V caps need not apply for that duty, too little voltage margin (what happens when your power company is lightly loaded and the mains voltage increases by 5% (OUCH!).
I can hardly wait to hear a report of how your 2024 Baby Ongaku mono-blocks sound in 2024.
Hello,
If your high voltage is rather moderate it wont damage your Tango.
I remember buying some Tango chokes made for choke input so having higher voltage ratings but i decided to go for Lundahl because i had to use a 900-0-900 volt transformer because it was directly coupled and needed nearly 700 volts dc. The Lundahl has a higher voltage rating. But if you need 350 volts dc your Tango will do otherwise put it on the return of the high voltage supply.
Or sell the Tango and buy a Lundahl.
Greetings, , Eduard
If your high voltage is rather moderate it wont damage your Tango.
I remember buying some Tango chokes made for choke input so having higher voltage ratings but i decided to go for Lundahl because i had to use a 900-0-900 volt transformer because it was directly coupled and needed nearly 700 volts dc. The Lundahl has a higher voltage rating. But if you need 350 volts dc your Tango will do otherwise put it on the return of the high voltage supply.
Or sell the Tango and buy a Lundahl.
Greetings, , Eduard
