Need to rent a power supply
Need to rent a power supply
(OP)
Hi, everyone:
I need to rent a power supply. Output Voltage=24-26V, current abuot 60A. Any recommendation is appreciated.
thanks
bj
I need to rent a power supply. Output Voltage=24-26V, current abuot 60A. Any recommendation is appreciated.
thanks
bj





RE: Need to rent a power supply
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RE: Need to rent a power supply
I am in southern california, close to Los Angeles.
bj
RE: Need to rent a power supply
RE: Need to rent a power supply
That's a 2kW supply.
You are looking for an HP or Agilent 6573A.
It will cost over a grand.. used
There are a couple big rental agencies that will come out in the paid stuff on a google search.
It will be quite rare to come by.. (Bend over grab ankles)
It will not be a matter of which company do I choose but rather who (if anyone) has one.
RE: Need to rent a power supply
For rental units I've used the Farnell / Advance AP1000 and AP3000 series supplies, also one from Power Ten a while ago whose model number escapes me. These are all really big laboratory supplies - expensive to rent, but sometimes you need one quickly for a one-off job.
Astec Standard have a good range of heavy current power supplies. Their VS and MVP series are good for 2.5kW and 1.0kW respectively, depending on the output voltage and current configuration. You might find buying a component PS is comparable to rental of a large bench instrument.
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One day my ship will come in.
But with my luck, I'll be at the airport!
RE: Need to rent a power supply
still need one. Some are analog, and therefore heavy.
Some will need 208/220v 3-phase power. Is it available?
<als>
RE: Need to rent a power supply
RE: Need to rent a power supply
I think most batteries are 90 amp-hours.
kch
RE: Need to rent a power supply
RE: Need to rent a power supply
1. one DC-Dc converter: 48V input, gives me 26V, 40A output.
2. two BK precision 1692 each can provide 13V, 40A output.
So is it safe if I connect two BKs in series and then parallel to the converter to provide 26V, 80A?
Thanks,
bj
RE: Need to rent a power supply
The source with the lowest internal resistance will try to hog the load and trip, fail, release smoke, etc.
You can relieve this problem somewhat by driving your load from your two sources thru individual resistors that essentially swamp the internal resistance aspect and allows your supply's a spongy connection to the load.
RE: Need to rent a power supply
RE: Need to rent a power supply
RE: Need to rent a power supply
But that's beside the point.
Depending on your transmission form, and I'm no ham, maybe you could use just one of your 40A sources and a large capacitor. Or as operahouse suggested batteries. Use two 12V batteries in series 13.7V x 2 = 27V.
Set up one supply to charge the batteries to the rated voltage then run your amp from them while they are charging. Essentially using them as extremely high capacity caps.
If your transmission is sideband or some other on off style then the batteries can be replenished during the no transmission moments.
RE: Need to rent a power supply
If you have any spur testing or signal purity requirements, then batteries can help eliminate problems.
If your requirements are pulsed RF power, at 180 watts, that can cause some droop in power supply outputs.
kch
RE: Need to rent a power supply
I've got a Lambda 15Vdc 80A PS at home (adjusted to 13.8v, flea market find, Cdn$40
Link: http://www.lambdapower.com/index.htm
A normal 15A AC outlet won't cut it for this much power (more than 1.5kw output).
RE: Need to rent a power supply
bj
RE: Need to rent a power supply
Must...clean...out...basement...and...retire...early.
I only circled that PS once before I grabbed it.
RE: Need to rent a power supply
RE: Need to rent a power supply