- 1. [Amps] OM power power supply design (score: 1)
- Author: Felipe Ceglia <felipeceglia2@gmail.com>
- Date: Wed, 9 Dec 2009 09:01:14 -0200
- Hi guys, Still regarding my own project.. As the first quote was a bit too salty, I started thinking about alternatives... Last night I came across these schematics from OM Power. They use 8 250v win
- /archives//html/Amps/2009-12/msg00244.html (6,926 bytes)
- 2. Re: [Amps] OM power power supply design (score: 1)
- Author: Ron Youvan <ka4inm@tampabay.rr.com>
- Date: Wed, 09 Dec 2009 09:40:25 -0500
- This design (old) has the advantages of using 1 kW diodes and 300 Volt capacitors and if a diode shorts and blows it's fuse, the remainder of the power supply keeps operating at the reduced Voltage.
- /archives//html/Amps/2009-12/msg00245.html (7,739 bytes)
- 3. Re: [Amps] OM power power supply design (score: 1)
- Author: "Hsu" <hsu4qro@gmail.com>
- Date: Wed, 9 Dec 2009 23:30:32 +0800
- Indeed, the OM's transformer is a unique design, the toroidal cores are light than EI cores and two transformers disperse weihght,it make possible to ship with amplifier togeter and needn't pull the
- /archives//html/Amps/2009-12/msg00246.html (9,484 bytes)
- 4. Re: [Amps] OM power power supply design (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Wed, 09 Dec 2009 13:04:42 -0800
- ORIGINAL MESSAGE: REPLY: Whenever you put transformer secondaries in series you must be careful not to exceed the insulation rating between a secondary and the iron core, and also between a secondary
- /archives//html/Amps/2009-12/msg00248.html (8,461 bytes)
- 5. Re: [Amps] OM power power supply design (score: 1)
- Author: Alek Petkovic <vk6apk@bigpond.com>
- Date: Thu, 10 Dec 2009 06:28:25 +0800
- It doesn't look to me, like the secondaries are in series. Each secondary has it's own rectifier and the dc outputs are in series. Is there some sort of path back through the full wave bridge rectifi
- /archives//html/Amps/2009-12/msg00250.html (8,185 bytes)
- 6. Re: [Amps] OM power power supply design (score: 1)
- Author: Larry Benko <xxw0qe@comcast.net>
- Date: Wed, 09 Dec 2009 16:05:20 -0700
- Alek, Two power supplies, each with their own diodes and capacitors do NOT change anything regarding voltage breakdown in the 2 transformers when the outputs ar put in series. Think of the circuit li
- /archives//html/Amps/2009-12/msg00252.html (9,670 bytes)
- 7. Re: [Amps] OM power power supply design (score: 1)
- Author: Alek Petkovic <vk6apk@bigpond.com>
- Date: Thu, 10 Dec 2009 07:10:37 +0800
- Yep, sounds good Larry. Thanks for that. It's only 10 past 7 in the morning and I've learned something already. Gotta be happy with that. Cheers from sunny Perth, Alek. http://www.qrz.com/db/vk6apk h
- /archives//html/Amps/2009-12/msg00253.html (10,846 bytes)
- 8. Re: [Amps] OM power power supply design (score: 1)
- Author: RICHARD SOLOMON <w1ksz@q.com>
- Date: Wed, 9 Dec 2009 23:11:37 +0000
- I asked those chaps about pricing on the 6 Meter Amp. In their response they said they don't have FCC approval yet. I didn't find any schematics on their website, did I miss them ? 73, Dick, W1KSZ __
- /archives//html/Amps/2009-12/msg00254.html (10,650 bytes)
- 9. Re: [Amps] OM power power supply design (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Wed, 09 Dec 2009 18:24:01 -0800
- ORIGINAL MESSAGE: REPLY: In this schematic: http://www.sm5cki.se/ompower/images/OM2500%20HV%20Supply.jpg and assuming the bottom most supply's negative is grounded: Imagine a short between the top mo
- /archives//html/Amps/2009-12/msg00255.html (8,906 bytes)
- 10. Re: [Amps] OM power power supply design (score: 1)
- Author: "Alex Eban" <alexeban@gmail.com>
- Date: Thu, 10 Dec 2009 08:50:28 +0200
- Yees!! This is an FB configuration. I have one operating in conjunction with a 4-1000 at the 1kW level and it works beautifully. It rids you of bleeder resistors and high voltage capacitors. It was o
- /archives//html/Amps/2009-12/msg00258.html (9,344 bytes)
- 11. Re: [Amps] OM power power supply design (score: 1)
- Author: "Alex Eban" <alexeban@gmail.com>
- Date: Thu, 10 Dec 2009 09:23:29 +0200
- First, mine works for about 15 years and during this time burned out 2 BY130 diodes . Second, usually the secondaries are stacked above the primary winding. So that the upper ones have more layers of
- /archives//html/Amps/2009-12/msg00259.html (10,846 bytes)
- 12. Re: [Amps] OM power power supply design (score: 1)
- Author: "Alex Eban" <alexeban@gmail.com>
- Date: Thu, 10 Dec 2009 09:26:34 +0200
- They most definitely are NOT! Actually, you have 8 power supplies, separate and insulated from one another and with their outputs connected in series. Think of 8 350 volts DC sources , and then visua
- /archives//html/Amps/2009-12/msg00260.html (9,858 bytes)
- 13. Re: [Amps] OM power power supply design (score: 1)
- Author: Ron Youvan <ka4inm@tampabay.rr.com>
- Date: Thu, 10 Dec 2009 09:37:56 -0500
- I don't understand how bleeder resistors are no longer needed. (which can also serve as the P.S. Volt meter multiplier) Many HP amplifiers use stacked low voltage capacitors so I don't see a differe
- /archives//html/Amps/2009-12/msg00263.html (8,677 bytes)
- 14. Re: [Amps] OM power power supply design (score: 1)
- Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
- Date: Thu, 10 Dec 2009 09:55:03 -0800
- ORIGINAL MESSAGE: REPLY: With this design, the bleeder resistor is still necessary to discharge the capacitors. With no bleeder at all, those caps can hold a lethal charge for days. As for the Hypot
- /archives//html/Amps/2009-12/msg00266.html (9,733 bytes)
- 15. Re: [Amps] OM power power supply design (score: 1)
- Author: Felipe Ceglia - PY1NB <felipeceglia2@gmail.com>
- Date: Fri, 11 Dec 2009 07:08:53 -0200
- Hi again folks, As I should have expected, there would be no free lunch on this. Thank you for your opinions! 73, Felipe - PY1NB Felipe Ceglia wrote: _______________________________________________ A
- /archives//html/Amps/2009-12/msg00295.html (9,351 bytes)
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