Thanks interesting

I know that you can use a considerably smaller core at 500 Hz and less windings per volt. This is where the weight savings occur for avionics use.

I I have thought about the use of a switched mode, mainly for valve amplifiers, but wonder about the extremes of generating 800V DC at high frequency. I have not seen high speed rectifiers with greater than a 100 V rating. I guess that they exist, but the price tag is prolly horrendous and or the supply limited to defence contractors only.

The circuit I'm playing with, dates from WW2. It discharges 0.7 Joules in 2uS every 20mS (350Kw) into a 24:1 step up transformer… Yes 10kV pulses… Everything about this circuit is extreme.

Best regards

Suusi M-B

At least does anyone know why the samples lose their constant-time values? Because adding?(one or more)?S&H between stages makes the output correctly sampled but awfully wrong. Is it because of the large number of integrator stages? It doesn't happen that way if you change it into a CIC decimator (and there are really large values after the upsampler).

Vlad

Thank you andy and john.

In message <l91pdi+glof@...>, dated Fri, 20 Dec 2013, d4394548
<nodoh@...> writes:

OK, Here I am as user D4394548 with a completely different identity and
emal address. Still goes to
as it did before. So I'm SOL on search:)

I think that pins it down to the server your messages go to: it's not
re-directing to the neo page.

You are not shown as a member with that username yet.

On Fri, Dec 20, 2013 at 3:46 AM, monettsys <405a82e5@...> wrote:

Is anyone else having problems searching the forum?

Yahoo's forum search isn't the greatest even when it does work.
Archive all your list traffic in gmail and let google search it.
Obviously this will not search any of the traffic before you
subscribed, but the sooner you start doing this the sooner it will be
useful.

-p.

I went back and the search option is gone, that is why I use a mail
client and keep the emails that are important, the web site is a disaster.

Is anyone else having problems searching the forum?

Best regards,

Helmut

开云体育

Is anyone else having problems searching the forum?
When I log on, no matter what I do, I am always taken to

Note there is no NEO in the url. I used to be able to go there, but not anymore.
However, when I try to do a search, for example, "tl494", I always get the following message:

-- 

AC2CL 

I do not think there is any thrill that 
can go through the human heart like that felt by the inventor as 
he sees some creation of the brain unfolding to success... 
Such emotions make a man forget food, sleep, friends, love, everything. 

- Nikola Tesla 

 

开云体育

smalcolmbrown@... writes:

>The three phase is 36Vac 500Hz which really chucks a spanner in the
>transformer design.

The main issue is to get the thin laminations you need for 500 Hz. I
suppose they are available, as used in aircraft transformers, but maybe
really difficult to get in small quantities.

-- 

AC2CL 

I do not think there is any thrill that 
can go through the human heart like that felt by the inventor as 
he sees some creation of the brain unfolding to success... 
Such emotions make a man forget food, sleep, friends, love, everything. 

- Nikola Tesla 

 

OK, Here I am as user D4394548 with a completely different identity and emal address. Still goes to as it did before. So I'm SOL on search:)

Now I have to unscramble Firefox passwords and delete the membership to the forum so I don't screw up Helmut's member logs.

Yes, I was thinking that might be a solution. But isn't neo giving problems posting?

--- In LTspice@..., John Woodgate <jmw@> wrote:

When I click on that URL, I'm taken to the Neo front page, so the
problem is with whichever Yahoo server you are directed through. You
could try setting up a new Yahoo identity.