|
Home | Forums | Rules | Articles | diyAudio Store | Blogs | Gallery | Wiki | Register | Donations | FAQ | Calendar | Mark Forums Read |
|
Please consider donating to help us continue to serve you.
Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving |
![]() |
|
Thread Tools |
![]() |
#61 |
diyAudio Member
Join Date: Dec 2019
|
|
![]() |
![]() |
#62 |
Spreading triode love.
diyAudio Member
|
Oversize the SMPS or use one without OCP.
![]()
__________________
If you can't learn to do something well, learn how to enjoy doing it poorly. |
![]() |
![]() |
#63 | |
diyAudio Member
|
Quote:
And then cut out the ripple with the cap multiplier. This is what i intend to do I see a very handy solution. ![]()
__________________
“And is it any wonder That the monkey's confused” ![]() ![]() |
|
![]() |
![]() |
#64 |
Spreading triode love.
diyAudio Member
|
FWIW I just wire the heaters to the output of the SMPS. I don't even add a cap. Works properly. No noise in the output of the audio circuit.
__________________
If you can't learn to do something well, learn how to enjoy doing it poorly. |
![]() |
![]() |
#65 | |
diyAudio Member
|
Quote:
I am very confused with tubes ... i do not understand i the two psu for heaters and tubes must share any ground ... i am very confused It would be much easier to use two completely separated psu ... but there can be noise issues ? very complicated. ![]() ![]() Sorry for sliding OT ...
__________________
“And is it any wonder That the monkey's confused” ![]() ![]() |
|
![]() |
![]() |
#66 |
Spreading triode love.
diyAudio Member
|
They need to be referenced to each other because "it's bad to leave things floating".
Indeed strange things happen when things are left to float electrically. Leave the control grid disconnected and see negative voltages in an amp with no negative rail ![]() It doesn't have to be ground referenced though. Many people reference them to a portion of the B+. A Noisy heater can capacitively couple noise into the audio via the cathode so in theory the cleaner the power to the heater, the less noise. However, many many sets were made over the years using simple AC with twisted wiring that didn't suffer from hum. Not all heaters are wound the same, either. Some are just a folded wire, some are spiral wound like a light bulb filament (reduces hum apparently). Sorry for the aside, OP.
__________________
If you can't learn to do something well, learn how to enjoy doing it poorly. |
![]() |
![]() |
Thread Tools | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Generic Power Entry PCB | baseonmars | Power Supplies | 18 | 26th August 2020 08:46 PM |
Google Chrome Audio power adapter is better than iFi Audio iPower? | Solve | Power Supplies | 2 | 9th September 2019 12:57 PM |
Generic Prototyping Board For Audio | jkuetemann | Parts | 20 | 6th February 2015 06:44 AM |
Power-oriented cap-meter | Elvee | Equipment & Tools | 10 | 28th December 2014 08:39 PM |
ORIENTED or Not ORIENTED cores for OPT | ja2dhc | Tubes / Valves | 14 | 5th July 2008 01:31 PM |
New To Site? | Need Help? |