Search found 10 matches
- Sat Oct 15, 2011 8:11 pm
- Forum: Technical Discussion
- Topic: HV Maida Regulators...
- Replies: 3
- Views: 1551
Re: HV Maida Regulators...
Is there an english translation?
- Sat Oct 15, 2011 7:55 pm
- Forum: Technical Discussion
- Topic: HV Maida Regulators...
- Replies: 3
- Views: 1551
HV Maida Regulators...
Hi, I'm in the design phase of building a new guitar valve amp, and I'm looking at regulating the HT using a Maida regulator. My requirements are 400V DC @ 200mA as I plan to use it to supply HT to the entire amp (yes, I know the PP rejects common-mode noise, but if I have a well-regulated HT, why n...
- Tue Oct 04, 2011 11:07 pm
- Forum: Technical Discussion
- Topic: Elevated 6.3V AC supply with 6.3V DC regulated supply?
- Replies: 32
- Views: 12076
Re: Elevated 6.3V AC supply with 6.3V DC regulated supply?
After all that, having checked the power transformer, it looks like I won't have enough juice to power the 2xEL34s + 4xECC83 (and relays) anyway, so I'm going to install a second power transformer to get 12.6v DC for the preamp tubes. I planned to DC elevate the 6.3v heaters anyway, but just out of ...
- Sun Oct 02, 2011 3:13 pm
- Forum: Technical Discussion
- Topic: Elevated 6.3V AC supply with 6.3V DC regulated supply?
- Replies: 32
- Views: 12076
Re: Elevated 6.3V AC supply with 6.3V DC regulated supply?
Apologies to resurrect this, I've just started looking at it all again. With the SPX29302/MIC29302 LDO regulators, what values of R1/R2 did you use. The equation specified in the datasheets is: Vout = 1.24 * (1 + R1 / R2) The example in the datasheet uses R1 = 158k. Is this a sensible value? There i...
- Wed May 05, 2010 11:47 am
- Forum: Technical Discussion
- Topic: Elevated 6.3V AC supply with 6.3V DC regulated supply?
- Replies: 32
- Views: 12076
Re: Elevated 6.3V AC supply with 6.3V DC regulated supply?
So with the raised 6.3V DC levels in Jana's diagram, would it be possible to feed these into a LDO voltage regulator? So instead of tying the regulator to ground, it's tied to the -ve line on the right of the diagram where it says "DC Heaters"? Also, so why would you not tie the elevated DC to the c...
- Thu Apr 29, 2010 3:46 pm
- Forum: Technical Discussion
- Topic: Elevated 6.3V AC supply with 6.3V DC regulated supply?
- Replies: 32
- Views: 12076
Re: Elevated 6.3V AC supply with 6.3V DC regulated supply?
Interesting stuff! Thanks for all your help. Was thinking about implementing a slow-start circuit into it as well.
- Thu Apr 29, 2010 12:35 pm
- Forum: Technical Discussion
- Topic: Elevated 6.3V AC supply with 6.3V DC regulated supply?
- Replies: 32
- Views: 12076
Re: Elevated 6.3V AC supply with 6.3V DC regulated supply?
Hi Paulster, do you have a list of components that you used and a schematic?
- Thu Apr 29, 2010 12:32 pm
- Forum: Technical Discussion
- Topic: Elevated 6.3V AC supply with 6.3V DC regulated supply?
- Replies: 32
- Views: 12076
Re: Elevated 6.3V AC supply with 6.3V DC regulated supply?
Hi, do you know if it works?
- Thu Apr 29, 2010 9:18 am
- Forum: Technical Discussion
- Topic: Elevated 6.3V AC supply with 6.3V DC regulated supply?
- Replies: 32
- Views: 12076
Re: Elevated 6.3V AC supply with 6.3V DC regulated supply?
Ah, I thought I was being stupid. Still, you have to ask. So the only difference really is that I ditch the centre-tap on the transformer winding.
Awesome stuff, thanks all. I could just as easily power the power amp valves with 6.3V DC as well?
Awesome stuff, thanks all. I could just as easily power the power amp valves with 6.3V DC as well?
- Wed Apr 28, 2010 10:53 pm
- Forum: Technical Discussion
- Topic: Elevated 6.3V AC supply with 6.3V DC regulated supply?
- Replies: 32
- Views: 12076
Elevated 6.3V AC supply with 6.3V DC regulated supply?
Hi, I've got a question for people more knowledgeable than I regarding tube heater power supplies. I'm looking to power the preamp valves with 6.3V DC, and the power valves with DC elevated 6.3V AC. Is this possible from a single 6.3VAC centre-tapped transformer winding - as shown in the attached im...