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Message |
    
Justpassingthru
Junior Member
Username: Justpassingthru
Post Number: 12
Registered: 3-2004
| | Posted on Friday, March 25, 2005 - 2:30 pm: | 
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Hi guys,,here is a questions for you. my palomar is a mobile unit, that works really well. the Pal 300 is w/o tubes, and needs some work, is it possible to use the power supply from the Pal 300, and configure it for the Palomar 310m? I am doubtful,,but stranger things have amazed me, JPT.
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Base:Realistic TRC-457
Palomar 310M-Glass
A/S Super Magnum 5/8
Mobile:Cobra-29
Davemade M-200
Maxrad MLB-2700
Weekends-Channel 3
Weekdays-Channel 28
"Davemade Davemade Davemade" |
Kid_vicious
Intermediate Member
Username: Kid_vicious
Post Number: 314
Registered: 9-2004
| | Posted on Friday, March 25, 2005 - 10:08 pm: |
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if the power supply is from a tube amp, then it most likely has a transformer that produces a lot of voltage at low amperage. most likely its not suitable for use with a solid state amp.
matt |
2600
Advanced Member
Username: 2600
Post Number: 523
Registered: 7-2002
| | Posted on Monday, March 28, 2005 - 12:36 am: |
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No can do.
Tubes operate at high voltages, and low current.
Transistors are the opposite: LOW voltages and high currents.
The transformer found in any tube-type amplifier delivers most of its power to a winding with a lot of turns of skinny wire. High voltage, low current.
The transformer you need for a low-voltage power supply has an output winding with few turns, but made of larger wire.
Besides, the transformer is just the starting point, since it delivers AC. Can't run a solid-state amp from that.
Even if you stumble upon the right transformer cheap, there is more to it than that.
By the time you add rectifiers filters and a regulator to it you could probably buy two factory-made supplies.
Tube-amp parts will work in another tube amp.
Most all the parts used in a solid-state amplifier are different, not just the power supply.
73
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Justpassingthru
Junior Member
Username: Justpassingthru
Post Number: 14
Registered: 3-2004
| | Posted on Monday, March 28, 2005 - 12:36 pm: |
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I will give a update, here is what I have.
1.Pal 300,base tuber amp w/o the 6lq6's,
2. Palomar 310M, mobile tuber amp with 4 8950's, which works great.
Now what I am wanting to accomplish is the following. The Palomar needs 55 amps, minimum to run properly, I have it hooked uo to a battery and a charger, which is not a good situation, to much of a hazard. I would like to see if I can utilize the tranformer from the Pal 300, TUBE base amp, to the Palomar 310M, which is a TUBE mobile amp, that works great, but requires 12 volts. I am sorry if there has been some confusion regarding this, but I hope I have made this a more precise post. Could someone offer their input? JPT. |
2600
Advanced Member
Username: 2600
Post Number: 526
Registered: 7-2002
| | Posted on Monday, March 28, 2005 - 11:51 pm: |
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Hey, I'm getting the picture. Thought you were referring to a solid-state mobile amp. Haven't ever seen the 310M, that I remember.
If you unhook the original 12 Volt-to-High Voltage power supply in the 310M, maybe you can use the transformer and H.V. supply parts in the base amp to run four 8950 tubes.
The base amp is not one I have a diagram for either, so this depends on how they wired the four (I think) 6LQ6 heaters (filaments). The 6LQ6 takes 6.3 Volts AC to light it. The 8950 takes twice that, 12.6 Volts AC.
A lot of tube-type base amplifiers would wire pairs of 6.3 Volt heaters in series. The transformer would feed 12.6 Volts to pairs of 6.3 Volt heaters. You only see this done in a linear that has an EVEN number of tubes. This saved them the need for an additional transformer winding to run the 12-Volt relay and keying circuit/preamp. Typically they just rectified the 12.6 Volts AC to run that stuff. I'm guessing here, since I can't find either of those models in my files for Pal and Palomar.
If this is the case, the Pal transformer will run four 8950 tubes.
If instead, they fed 6.3 Volts AC to all four 6LQ6 heaters in parallel, this plan comes up short. Even if the transformer IS a match for tubes with 12.6 Volt heaters, it will be a fairly major project to pull off. If you don't have 12.6 Volts AC on the Pal's transformer, it will have to come from somewhere else to light the 8950 heaters.
73
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Justpassingthru
Junior Member
Username: Justpassingthru
Post Number: 15
Registered: 3-2004
| | Posted on Tuesday, March 29, 2005 - 2:36 am: |
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Thanks 2600, that is what I was looking for, I really appreciate your input. Did you get my email? If so please reply, I have schamatic for the Palomar 310M, if you want a copy for your files, JPT |
Mrhydone
Junior Member
Username: Mrhydone
Post Number: 24
Registered: 7-2005
| | Posted on Monday, September 11, 2006 - 6:58 pm: |
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do you have any specs on the 310m any info
would be appreciated |
Hotwire
Senior Member
Username: Hotwire
Post Number: 1758
Registered: 1-2005
| | Posted on Tuesday, September 12, 2006 - 1:23 pm: |
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Mrhydone, 26 to 54 Mhz AM/SSB operating range. With 3 watts drive the 310M will do 275 to 300 watts max. Needs 13.8 volts of 55 amps to perform at 100 percent output. Has four 8950 tubes. You can read more at cb tricks website. hope I could help |
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