Design

low frequency amplification
Hello, I have a question about where do frequencies end and pulses start? I'm trying to make an impact detection circuit, I have some sensors on a mat, and when something strikes the mat I get a small voltage (like 100mV).... so I'd like to amplify this 100mV to something around 1V.... I've been reading up ... 6 Aug 2010 21:29

How many usenet misfits have Aspergers? MY INITIAL ASSESSMENT
http://www.wired.com/threatlevel/2010/05/lamo/ Ex-Hacker Adrian Lamo Institutionalized for Asperger's By Kevin Poulsen May 20, 2010 5:46 pm ------------------------------------------------------------- [...] JosephKK > You almost mentioned auk itself. I posted the same news story and asked the same questi... 12 Aug 2010 21:22

Thanks Jim Thompson (Contents of websites)
Amigo wrote: [...]Shotgun Microphone construction[...] A bit of googling led me to your site where [a scan] in PDF format of the original article resides. Thanks for taking the trouble to make articles like this available for posterity. I note that Genome allowed his site's registration to lapse and that... 6 Aug 2010 08:16

a delayed response to String Theory expert - theoretical physicist Michio Kaku
On Wed, 4 Aug 2010 14:24:38 -0700 (PDT), fitz <zeusrdx(a)yahoo.com> wrote: a delayed response to String Theory expert - theoretical physicist Michio Kaku Do the strings of String Theory act like standing waves or waves that transmit energy? (click link): http://www.amperefitz.com/mwmk.htm For... 5 Aug 2010 22:29

Thanks Jim Thompson
I was lookinig for the Shotgun Microphone construction PDF and found it wasn't where it used to be. A bit of googling led me to your site where ascan in PDF format of the original article resides. Thanks for taking the trouble to make articles like this available for posterity. ... 13 Aug 2010 01:42

H Bridge, NMOS AND PMOS DRIVER
Hello All, I am tring to generate a square wave of 100KHz and 200 volts peak to peak across a resistor via H- bridge. The current could go upto 30A. I am looking into two following ways to drive the NMOS ( four NMOS transistors ) H - bridge. 1. a. Using H bridge Drivers HIP4081A. I tried to look for the... 12 Aug 2010 23:32

Burn out 120V lamp on 120V circuit?
A while back, in another Usenet ng, someone asked about using an ordinary 120V incandescent lamp to slow down a fan motor. A number of posters replied that they had successfully done this. The usual discussion of the merits of doing this ensued. Then, one frequent poster replied that he had tried this with a... 12 Aug 2010 23:32

Project for New American Unix, Physics, Electronics, Metalworking - TUTORIAL VIDEOS
Gunner Asch <gunnerasch(a)gmail.com> on Thu, 05 Aug 2010 08:42:48 -0700 typed in rec.crafts.metalworking the following: Oh oh....looks like he has been off his meds for weeks...... You keep saying that, and I thin you are making a big assumption there. Which is to say, you are assuming he was on meds in the fi... 5 Aug 2010 13:34

power outage
We had a bad storm and a power outage, so I used it as an opportunity to wire a 15amp 240vac breaker box into the main service. If I had the money I would've put in a service disconnect switch as well. However this will have to suffice. The load will be a signaling circuit that basically just tells when the ... 5 Aug 2010 12:27

Getting heat out of a box
Hi All, I'm looking for a company that could help solve some thermal management issues. Basically I've got a design that dissipates about 30W and need to encase it in a sealed box (not hermetically, but to all intents and purposes there can be no airflow through the box). Current thoughts are an aluminium e... 8 Aug 2010 16:43