Design

Conroy - Public Enemy #1 - Re: Turn your Rigol DS1052E Oscilloscope into a 100MHz DS1102E
fritz wrote: krw wrote: So you admit to being nothing more than a troll. So you admit to being an idiot, too ??? He doesn't need to. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. ... 17 Apr 2010 20:44

Conroy - Public Enemy #1 - Re: Turn your Rigol DS1052E Oscilloscope into a 100MHz DS1102E
fritz wrote: I was desiging and publishing circuits long before this NG ever existed. That makes everyone here a newbie. Phil is no relation. If you had looked at my past posts, you would see that clearly. Why would I want to dig through your trash? You aren't the only one who was in electro... 17 Apr 2010 19:39

Transformer soft start with Triac and uC
Hi,please be patient and read the description of the situation: A friend is having lot of problems trying to switch primary winding of a 400VA toroidal transformer by a triac driven by a zero crossing optotriac. Having a bit of measuring instruments i tried to help him. The net voltage is 220V,the secondary windi... 23 Apr 2010 17:58

If D from BC were a carpenter:
On Apr 15, 6:01 pm, "Michael A. Terrell" <mike.terr...(a)earthlink.net> wrote: He'd be known as 'Pipe Dope' -- Lead free solder is Belgium's version of 'Hold my beer and watch this!' He would be following in the footsteps of Jesus. Now there's a thought. ... 17 Apr 2010 10:46

Women + Laptop + Coffee cup + Kids + Ball + Hairdryer = Bad situation =D
Hello, I will share with you a funny little story which seems to happen more often to "girls/women": Mother has laptop on table or so... with a cup of coffee next to it... kids/daughter are playing in the living room with a ball. Ball hits the coffee cup, coffee spills over laptop... Mother is angry and ... 18 Apr 2010 23:02

� Who made this connector? (with photos)
On Fri, 16 Apr 2010 23:18:06 -0700 (PDT), William Miller <prototech(a)usa.net> wrote: Anyone know where I can get connectors like these? Again, 2mm pitch to insert stripped ribbon cable. It looks like through-hole, but what is the pin pattern: in-line or staggered? Molex p/n 0521471210 may be close enoug... 20 Apr 2010 16:18

High voltage, high frequency discrete opamp
Hello, I am electronic technician employed at mass spectrometry laboratory. Current problematics which I am involved includes building a high voltage, high frequency discrete operational amplifier which can amplify AC sweeps from 100 kHz to 6 MHz with output voltage swing from -150 to +150V. Gain is not need... 23 Apr 2010 21:23

Solar cell
Hi, I want to realize (for hobby) a battery charger using solar cell. I've found this sensor http://www.clare.com/Products/SolarCell.htm Its output voltage is high and can be used without step-up transformer (like any typical solar cell). So, i can use * a typical solar cell (with millivolt output voltage) and a ... 28 Apr 2010 12:53

Tree Wind Generator
An idea I've had for years, but never tried and never seen anyone else do it either. Simple idea - capture the energy of a tall tree swaying in the wind. Rough numbers: 200kg force (2kN) through 0.3m every 2 seconds is potentially around 330W. Tie a line to the top of the tree to ground via a spring. Use the ... 19 Apr 2010 00:08

madell px3700
Hi, We are currently setting up a Madell PX3700 and we are confused with the vision cable connection. The manual does not state a clear instruction for the installation. We just connect it according to the color code but we are not 100% sure if the connection is correct. Another error that we encounter is that the m... 16 Apr 2010 16:13