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#1
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Need Phantom Power Supply That is Not a Switching Supply
Does anyone have a 48 volt phantom power
supply that is not a swicching supply? This would probably have to be a older supply. I just need it to power one mike. I am using a condenser mike with my amateur radio transceiver and the new switching supplies must beat with something in the tranceiver to cause a low level tone in my transmitted audio.Does anyone have an older supply for sale? Also, any sugestions for eliminating this problem? It would be a lot easier to use a switching supply. Kent Tunks |
#2
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Need Phantom Power Supply That is Not a Switching Supply
1. 5 9 volt batteries, 2 resistors and 2 coupling capacitors....
2. a dynamic microphone.... or better yet a carbon one from a WE500 Rgds: Eric "Carlos42" wrote in message om... Does anyone have a 48 volt phantom power supply that is not a swicching supply? This would probably have to be a older supply. I just need it to power one mike. I am using a condenser mike with my amateur radio transceiver and the new switching supplies must beat with something in the tranceiver to cause a low level tone in my transmitted audio.Does anyone have an older supply for sale? Also, any sugestions for eliminating this problem? It would be a lot easier to use a switching supply. Kent Tunks |
#3
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Need Phantom Power Supply That is Not a Switching Supply
"Carlos42" wrote in message
om Does anyone have a 48 volt phantom power supply that is not a switching supply? This would probably have to be a older supply. Audio Technica CP8506 It ain't cheap, it's oversized, but I have one and I know for sure it has a linear power supply, I just need it to power one mike. I am using a condenser mike with my amateur radio transceiver and the new switching supplies must beat with something in the transceiver to cause a low level tone in my transmitted audio.Does anyone have an older supply for sale? Seems like a reasonable situation. |
#4
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Need Phantom Power Supply That is Not a Switching Supply
"Carlos42" wrote ...
Does anyone have a 48 volt phantom power supply that is not a swicching supply? This would probably have to be a older supply. I just need it to power one mike. I am using a condenser mike with my amateur radio transceiver and the new switching supplies must beat with something in the tranceiver to cause a low level tone in my transmitted audio.Does anyone have an older supply for sale? Does your mic REALLY need a full 48v? (Many of them require as little as 5-9v) You could use any old 48v power supply like an open-frame one (like from DigiKey or MPJA, etc.) Or you could use a wall-wart (like a 24v one from AllElectronics for $4.75 with a voltage doubler (the phantom power current requirement is very low). Also, any sugestions for eliminating this problem? It would be a lot easier to use a switching supply. Or you could put additional filtering on your switch- mode power supply. Since the current requirement is so low, a series of R/C sections would make it nice and quiet while still delivering adequate current. |
#5
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Need Phantom Power Supply That is Not a Switching Supply
Condor makes a 48V, 0.5A linear supply. You can order it from Mouser - HB48-0.5-A+
It's definitely overkill, but at $42, it will power a lot of mics. |
#6
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Need Phantom Power Supply That is Not a Switching Supply
Carlos42 wrote:
Does anyone have a 48 volt phantom power supply that is not a swicching supply? This would probably have to be a older supply. I just need it to power one mike. I am using a condenser mike with my amateur radio transceiver and the new switching supplies must beat with something in the tranceiver to cause a low level tone in my transmitted audio.Does anyone have an older supply for sale? AKG still makes one, I think. Also, though, your microphone may have a DC-DC converter which may also be causing part of the problem. Also, any sugestions for eliminating this problem? It would be a lot easier to use a switching supply. My suggestion is put five 9V batteries in series, get a pair of 6.81K resistors, and make your own. That way you'll at least be able to make sure the problem is the supply and not the mike. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#8
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Need Phantom Power Supply That is Not a Switching Supply
On 15 Mar 2004 16:08:15 -0800, (Carlos42) wrote:
Does anyone have a 48 volt phantom power supply that is not a swicching supply? This would probably have to be a older supply. I just need it to power one mike. I am using a condenser mike with my amateur radio transceiver and the new switching supplies must beat with something in the tranceiver to cause a low level tone in my transmitted audio.Does anyone have an older supply for sale? Also, any sugestions for eliminating this problem? It would be a lot easier to use a switching supply. Wouldn't a dynamic mic. do the job? Or is this some breed of hi-fi amateur radio? :-) CubaseFAQ www.laurencepayne.co.uk/CubaseFAQ.htm "Possibly the world's least impressive web site": George Perfect |
#9
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Need Phantom Power Supply That is Not a Switching Supply
I did not think about the possibility of a DC-DC converter
being part of this problem.Thanks, Scott, for the tip! The mike is a Behringer B-1.I have no idea of the electronics inside.Does anyone else know if it has a DC-DC converter? My thanks to all who replied, there were many good sugestions offered and I appreciate all of them. In the interim, I have ordered a Nady SMPS-1 that the Nady folks tell me is a linear supply. It is cheap, $35 including shipping. I will let the group know how it works out. Kent Tunks (Scott Dorsey) wrote in message ... Carlos42 wrote: Does anyone have a 48 volt phantom power supply that is not a swicching supply? This would probably have to be a older supply. I just need it to power one mike. I am using a condenser mike with my amateur radio transceiver and the new switching supplies must beat with something in the tranceiver to cause a low level tone in my transmitted audio.Does anyone have an older supply for sale? AKG still makes one, I think. Also, though, your microphone may have a DC-DC converter which may also be causing part of the problem. Also, any sugestions for eliminating this problem? It would be a lot easier to use a switching supply. My suggestion is put five 9V batteries in series, get a pair of 6.81K resistors, and make your own. That way you'll at least be able to make sure the problem is the supply and not the mike. --scott |
#10
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Need Phantom Power Supply That is Not a Switching Supply
Carlos42 wrote:
I did not think about the possibility of a DC-DC converter being part of this problem.Thanks, Scott, for the tip! The mike is a Behringer B-1.I have no idea of the electronics inside.Does anyone else know if it has a DC-DC converter? It's a Beijing microphone. I don't think any of those have a converter and they all polarize directly from the 48V line. This is sort of a bad thing since they have capsules that are copies of ones designed for much higher voltages and don't perform as well on 48V. It's also a bad thing in that the microphone really needs 48V, and won't work at all on 24V, for instance. In the interim, I have ordered a Nady SMPS-1 that the Nady folks tell me is a linear supply. It is cheap, $35 including shipping. I will let the group know how it works out. SMPS? That sounds kinds of suspicious.... SMPS stands for Switching Mode Power Supply in other quarters. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#11
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Need Phantom Power Supply That is Not a Switching Supply
In rec.audio.pro, (Carlos42) wrote:
Does anyone have a 48 volt phantom power supply that is not a swicching supply? This would probably have to be a older supply. I just need it to power one mike. I am using a condenser mike with my amateur radio transceiver and the new switching supplies must beat with something in the tranceiver to cause a low level tone in my transmitted audio. Are you able to switch things so you can hear signal from the microphone without the transmitter active? I wonder if the RF might be getting into the mic signal and causing the problem. What power level and mode is the transmitter? Also, the make-your-own-phantom with five 9V batteries as others mentioned WILL tell you if the phantom supply is the problem, and will surely last until you get a 'real' linear supply. Does anyone have an older supply for sale? Also, any sugestions for eliminating this problem? It would be a lot easier to use a switching supply. Kent Tunks ----- http://mindspring.com/~benbradley |
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