A Polish manufacturer of toroidal transformers offers shielded transformers starting from 20 VA. Which VA rating would be your primary choice for a pair of transformers (230V) for this project?
Thanks!
Thanks Salas!
Luckily, I did not mix up primaries and secondaries in real life
The background of my question was if it is necessary to use 2 fuses with 2 transformers as suggested in this thread: Wiring up two trafos to one IEC socket.
Which slow blow fuse(s) should I use (230 V), 1.25 A?
Thanks!
Luckily, I did not mix up primaries and secondaries in real life
The background of my question was if it is necessary to use 2 fuses with 2 transformers as suggested in this thread: Wiring up two trafos to one IEC socket.
Which slow blow fuse(s) should I use (230 V), 1.25 A?
Thanks!
Its not necessary to use individual primary fuses by electrical safety code. In case you want to, you should not skip a central fuse. In other words 2.5A in the IEC socket and 1.25A before each 50VA transformer for USA. Cut those figures to nearest 1/2 available amperage values for Europe and other 230V countries. All such fuses should be time lag (T) type. What we call slow blow.
Hello Salas and Tea-Bag, I finished my preamp with BA2018 line stage boards stacked for Balanced operation with the UFSP with shunt regulators in the same chassis. The power supplies for the display/ relay input /volume control/remote, has a 250vac 30A relay to turn on the power supply for the BA2018 line stages.
The UFSP has a remote power supply with umbilical cord, the shunt regulators are mounted vertical with the home made heat sinks 10mm below the vents in the steel chassis. After 3 hours of operation, the inside of the enclosure stayed the same temperature. It is dead quite on all of the inputs, the UFSP I've adjusted and played HO MM, LO MC, HO MC. After a month of playing, time to move it into the main system.
Thank you both for all your help with this project!
The UFSP has a remote power supply with umbilical cord, the shunt regulators are mounted vertical with the home made heat sinks 10mm below the vents in the steel chassis. After 3 hours of operation, the inside of the enclosure stayed the same temperature. It is dead quite on all of the inputs, the UFSP I've adjusted and played HO MM, LO MC, HO MC. After a month of playing, time to move it into the main system.
Thank you both for all your help with this project!
Attachments
I have an AT-OC9ML/II cartridge, I'm using it with my new UFSP integrated preamp. Before I used a Threshold FET -10Pe. The cartridge is mounted on a modified Rega P2 with a Expressimo Mongoose 250 tonearm.
I like this combination as this is the only tonearm I own which will allow a modern MC cartridge.
I like this combination as this is the only tonearm I own which will allow a modern MC cartridge.
Looks like price goes up with specs/materials. Boron is supposed to be better than aluminum, Shibata better than Microlinear, square shank better than round, etc. Tighter tolerances..... Who knows. Wish there was a tryout service—actually, could be a business (?). I try to buy used—worked out so far.
After the ssfp
After the ssfp, its time for the ussfp.
Until tea starts the gb, i am collecting all the other items....
May i say the ssfp (mm version) is something, that all my friends wanted to have for them!
Now i am going to buy a lomc cart to enjoy this little wonder
After the ssfp, its time for the ussfp.
Until tea starts the gb, i am collecting all the other items....
May i say the ssfp (mm version) is something, that all my friends wanted to have for them!
Now i am going to buy a lomc cart to enjoy this little wonder
Attachments
