T&L Publications

In general bring a piece of iron up to the critical temperature in a magnetic field and it will become magnetic. How magnetic depends on the material properties and alloy of the iron. Lightning is a perfectly reasonable way to create high temperatures and a magnetic field inducing large current flo...

I was wondering how some of the first magnets were made. I'm not interested in electro magnets, using other magnets to make magnets, etc. I am more interested in... Lodestones "natural" but still wonder how they get their properties... Browsing the internet, found a post about Creating Mag...

http://www.sparkfun.com/commerce/produc ... ts_id=8947

http://www.sparkfun.com/commerce/produc ... ts_id=8945

Steve! Found this on the web, might be useful. http://www.murata-ps.com/data/apnotes/dcan-31.pdf Steve G. http://2.bp.blogspot.com/_53oMB4-fxXM/SVZZdJntnPI/AAAAAAAAAAM/vXEtrdBFtqI/s1600-R/cookie.gif This solved my problem! Thou I tried this before I read your post... :D My board was experiencing gro...

Hello Mr. Al Yes it is a Buck. How can it tell if its the load. The board works with a external power supply. I am noticing noise in the Mhz range... what do you think of this calculation... http://www.wa4dsy.net/cgi-bin/lc_filter?FilterResponse=Lowpass&poles=3&cutoff=200&funits=MHZ&...

Well this power output IS a problem that I will have to fix.

I'll check the period...

Hooking up a external load to the DC2DC I see lots of noise on the output. More than what you see in the photo above.

I will answer what I can and get more info later... 67Mhz-74mv p-p ripple. What is this supply driving-a high speed clock? The load drives several processors running at 30,25,8Mz *** I can put a probe on the converter and see the same AC signal Does that period relate to any thing in the load circui...

Whoever can solve this gets a cookie... This is my output of my Isolated DC to DC converter. http://i424.photobucket.com/albums/pp326/sambuchi/tek00021.png?t=1257898559 I have the converter wrapped in M3 tape. I am not having much luck killing this noise. I need to to go for my amplifier circuits on...

I am using the following DC to DC converter. http://www.newark.com/artesyn/bxa3-24s05j/dc-dc-converter/dp/71K1012?Ntt=bxa3-24s05j I am learning about EN55022... I have 3 different dc to dc converters the one above is giving me the best results. I still have a noise issue but its not as bad. Playing ...

Yeah.... I've tried to use different value caps and no luck cleaning this up. I found this nice site... http://www.wa4dsy.net/filter/hp_lp_filter.html I have some sensitive circuits on board that cant handle the output of this dc to dc converter. and using an external power supply the board works gr...

I have a 5V power supply that draws .06A

There is a 15mV 2.5 MHz AC ripple on this supply voltage that I want to get rid of.

What can I do here?

I will need the pulse to be 50ns unfortunately. I will have some time this week to review all of this great data and then make a decision on what is practical for my testing needs.

Thanks again everyone.

Hello all. I was wondering if anyone here uses PLD's and if so what are some cheap ways to get started with them.

I would love to hear of an in system programmable chip & compiler & program tool for under 50.00!

:D Thanks for the input everyone. This circuit will be used to test an amp circuit. For the accuracy question I would say it would have to be fairly accurate. I am testing the threshold of the data transmission and would like to meet the spec as much as possible. Bob & Robert, thanks for the gre...