I have enough spare parts to make a PSU for a Salas 6V6 preamp. The idea is to run it from a 24V DC power supply.
I have several of these:
VI-J1B-EY | VI-J00 Series DC-DC Converters | Vicor
and a few others, enough to make a 330VDC B+ from a 24V PSU. The idea is to put the converters in series to get the necessary voltage. I might put this on the final B+ output: 21st Century Maida Regulator: A modern B+ voltage regulator – Neurochrome
I also have this, that I can trim to 6.3 for the heater.
VI-J1T-CY | VI-J00 Series DC-DC Converters | Vicor
I plan to use this ripple attenuator, which I also have, on the output of 6.3V converter.
Ripple Attenuator Module - RAM | Vicor Corporation
Besides the fact that this is all unnecessarily complicated, I'd like to try it. Are there any reasons not to? How about at amp startup? As I understand it, this might be a difficult scenario for the PSU.
Can I put an NTC on the output of the 24VDC power supply, and before the converters?
https://www.alliedelec.com/m/d/5537bfe04244704ae50832ab5bfb2832.pdf
I have several of these:
VI-J1B-EY | VI-J00 Series DC-DC Converters | Vicor
and a few others, enough to make a 330VDC B+ from a 24V PSU. The idea is to put the converters in series to get the necessary voltage. I might put this on the final B+ output: 21st Century Maida Regulator: A modern B+ voltage regulator – Neurochrome
I also have this, that I can trim to 6.3 for the heater.
VI-J1T-CY | VI-J00 Series DC-DC Converters | Vicor
I plan to use this ripple attenuator, which I also have, on the output of 6.3V converter.
Ripple Attenuator Module - RAM | Vicor Corporation
Besides the fact that this is all unnecessarily complicated, I'd like to try it. Are there any reasons not to? How about at amp startup? As I understand it, this might be a difficult scenario for the PSU.
Can I put an NTC on the output of the 24VDC power supply, and before the converters?
https://www.alliedelec.com/m/d/5537bfe04244704ae50832ab5bfb2832.pdf
They spec it at 500Vrms dielectric withstand output to base plate, but I'd still check with them
about this particular application. And ground all the base plates.
about this particular application. And ground all the base plates.
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Definitely will contact Vicor. Good advice.
This application note says to use a split supply, 200V max to the baseplate:
http://www.vicorpower.com/documents/application_notes/an1_high-vout.pdf
This application note says to use a split supply, 200V max to the baseplate:
http://www.vicorpower.com/documents/application_notes/an1_high-vout.pdf
I'm guessing this 200V limit is a deal breaker.
This means in stacking these modules, I'd have a virtual ground at around -160V, earth at 0 VDC, and B+ at +160V.
Thoughts? Seemed like a an easy solution, with isolated relatively low noise parts... but alas.
This means in stacking these modules, I'd have a virtual ground at around -160V, earth at 0 VDC, and B+ at +160V.
Thoughts? Seemed like a an easy solution, with isolated relatively low noise parts... but alas.
This will run it. I use one for a stereo 6P15P amp driven with a 12V 10A brick supply.... Despite the title, it is AC AND DC.
DC-AC Converter 12V to 110V 200V 220V 280V 150W Inverter Boost Board Transformer | eBay
DC-AC Converter 12V to 110V 200V 220V 280V 150W Inverter Boost Board Transformer | eBay
I've used these before successfully. They are not output-short-circuit protected, I discovered (!), but seem to behave otherwise. DC 12V 24V to DC 200-450V 280V 380V High Voltage Boost Step Up Converter 70W | eBay
I've used those, too. They will oscillate if you aren't careful. I use one for a HP amp and you can hear it oscillate while the tubes warm up and start to conduct.
Although my question was about the vicor modules I have, now I'm down ebay the rabbit hole 😛
There are quite a few of these, and I haven't seen anyone mention them on this forum:
7R 230W 5R 200W Moving Beam Head Light Power Supply 380v 12v 24v | eBay
They are for some kind of high powered DJ lights.
What do you think is going on in this circuit?
Do you assume isolated?
There are quite a few of these, and I haven't seen anyone mention them on this forum:
7R 230W 5R 200W Moving Beam Head Light Power Supply 380v 12v 24v | eBay
They are for some kind of high powered DJ lights.
What do you think is going on in this circuit?
Do you assume isolated?
The 380V output is beside the input connections, I would assume it isn't isolated but it may be.
Interesting though, I've never seen this one before.
Interesting though, I've never seen this one before.
