T&L Publications

Hi all, I need a magnetic sensor, 2axial or 3 axial, please suggesting, thanks<p>mike

Hi little_angle,<p>I appriciate that you choose programming pic as your hobby after you retired. I have some unused PIC16f877 daughter boards, if you need them and wish to pay the shipping charges from China to US, I can send you some for free. they are very nice for beginners.<p>mike

Hi Greybie I think there's no too much concerns in usage of solar cell. just buy the right cell according to your voltage and current requirement, then connect them to your application. sometimes a voltate or current limiter or voltage regulator may be used. <p>I have a DIY solar cell phone battery ...

Hi all
my AD will be published in July's issue. I'm thinking about special offers for N&V readers, any suggestions?<p>mike

thanks rstofer, I know this and our company had done a project involves in FFT ON FPGA. But it's not cost effective, FFT needs a very big scale fpga to do that. I'm wondering if there's some commercial chips, not as expensive as spartan III, and can do FFT-IFFT quickly and cost less.

Hi all<p>Is there any chip(sets) that can do hardware FFT and IFFT? <p>mike<p>[ June 01, 2005: Message edited by: ezpcb.com ]</p>

Yes Gorgon I can send you the schematic. please let me know your email. the package of 877 is QFP44. <p>Of course THe boards are fabricated by us, I would say that they are the simplest we made, and of course can show our very normal quality, but doesn't show the highest. we can do up to 40 layer no...

Hi all<p>March of this year we had finished an educational project using PIC16F877. There's a small daughter board with only crystals, 16f877, some capacitors, ICD header and 44 pins expansion connectors on it. It's really a nice kit to develop the 16F877 and 16F874. <p>We had made more than 3000 pc...

There are millions of webs can be found by google: http://web.telia.com/~u85920178/begin/opamp00.htm http://webpages.ursinus.edu/lriley/ref/circuits/node5.html http://www.chem.uoa.gr/Applets/AppletOpAmps/Appl_OpAmps2.html <p>reading some app notes or literatures of the semiconductor companies is als...

It seems that most E-hobbist are talking about microcontroller, but few are interested in DSP. Do you think there're some DSP platforms neat for hobbists?<p>I think the best dsp for beginner is dsPIC(microchip again! it seems that they are limited in hobby level (- :) . it has 20pin devices, and the...

The current sink capability is so much easier to deal with than lack of DMA.
The biggest drawback is the development of H series is costly, tools and softwares are not easy to find as PIC or AVR.<p>mike

I had used all of the uCs you mentioned, I like PIC.<p>But I'm beginning to interested in Rensas H series, it has more choice than any of other mcu series. <p>mike

You are quite right rstofer. but how about 1.7/8000? that's the best result, don't you think so?<p> <blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by rstofer: Another way to look at cost is in terms of a percentage of income. A...

Hi Enzo,<p>What interested me is finding cheap vacuums tubes on the web market or Sunday second hand market then make my own tube amplifier. You can't imagine how many tubes in those markets and how cheap they are. I had made 3 amplifiers in the past 2 years, one use EL34, one use KT88 and the other...

Hi all
I wander if there's any vacuum tube audio fan out there? I like this very much. There seems no such topic on N & V.<p>mike<p>[ May 27, 2005: Message edited by: ezpcb.com ]</p>