Well, the generators are synchronized to the line, and the blade to
generator
gearboxes may be the same for a common group of machines. Wind farms may
have a mixture of machines with different gearboxes for different
blades.
Groups of the same machine type will not be synchronized if they use
Quoth Tom Van Baak at 2008-05-02 14:36...
I wonder if the blades also are in sync, either amongst
themselves, or with GPS, or with the power grid frequency.
Those that I have seen in Denmark appear rotate in sync with each other;
I assume that this would have to be locked to the grid frequency
I assume that this would have to be locked to the grid frequency
somehow - can't see all that power being rectified then sent out
through a grid-locked inverter.
Why not?
Diesel-electric locomotives do electrical conversions because it's more
efficient than mechanical gears.
Some high
Hal Murray wrote:
Why not?
Diesel-electric locomotives do electrical conversions because it's more
efficient than mechanical gears.
Some high voltage transmission lines are DC. The conversion sites on each
end must be interesting.
Especially when they use mercury arc rectifiers.
In message [EMAIL PROTECTED], Ulrich Bangert writes:
Patrick,
since I own it I am in love with my HP6632A power supply.
I can recommend the HP 6626A as well, it has four outputs (2x25W, 2x50W)
and each output has 2x2 ranges for current and voltage.
You need to make your own cabling for the
Hi Brooke and others!
Have a 6624A and a 6622A. Have yet to arrange a good front panel for
their outputs.
The thing that bothers me is the rather large amount of noise they
generate. The fan is LOUD compared to my other instruments.
Anyone done a safe conversion on the fan solution to these
Not me, I have too many power supplies now. But,
As they have remote voltage sensing and you need a panel anyway why not connect
long cables to put them under the table or where the noise is less of a
concern. As a plus you could have more space where you need it and the
flexibility to have a
Hi;
I bought a number of these for work and we've been very pleased with
them:
The GP1305TP version. One fixed +5, and two variable (but they can
be locked for eg: +/- 15) outputs.
http://www.testequipmentdepot.com/ezdigital/gp1305.htm
Tom Frank, KA2CDK
From: Patrick [EMAIL PROTECTED]
Hi Everyone
I have been using a power supply from an old computer for my bench set
up. I am finally going to break down and purchase a proper variable
power supply. One channel ought to do for me and I don't need a
programmable one.
Does anyone have
Useful if you need to check integrity of high current crimped joints,
connectors etc- the supply is bound to be a switcher, so if you can
figure out how to tweak the voltage over a goodly range with existing
ccty,, then it's a done deal- otherwise you may need to build an
external series
Quoth Neon John at 2008-05-03 08:16...
Set each one to 6 volts, hook 'em in series and use 'em to run big 12 volt
loads. I ran a homemade true uninterruptible power supply for years using
that lashup.
OK, whilst we're deviating from time a little, I would like to put a
time and power supply
At 06:14 PM 5/2/2008, John Ackermann N8UR wrote:
I'm almost embarrassed to admit this, but I'm partial to the old
HP/Harrison 6200B supplies. They do 0-40 volts at .75A, or 0-20 volts
I'm not embarrassed to admit that I love my 6200B. I took it in to
work so that I could use it daily. I do
Here are my 2 favorite power supplies.
http://www.ko4bb.com/Test_Equipment/Power_Supplies.png
The one on the left is a 30V/3A supply. The current limit is adjustable with
a 10 turns pot, so it can be precisely set. I only use 3 turns of the 10
turns pot, so that one turn is one A, resolution is
On Sat, 03 May 2008 08:58:58 +0930, Matthew Smith [EMAIL PROTECTED] wrote:
I am building two GPS-driven devices, an NTP server based on an ancient
single board computer and a Nixie clock. Our power here is not what one
might call reliable - we are stuck on a spur of a very long 19kV, single
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