T&L Publications

Russ, an XOR is a phase detector. I think he needs a frequency-locked loop, not a PLL. It would be damned difficult (and overkill) to phase-lock a gas engine that has a varying load. If I were to try to do this electronically, I would probably start with some sort of RPM sensor on the magneto or spa...

Al, there are hundreds of op amps that will handle baseband video. Try these web sites:<p> http://www.national.com/parametric/0,1850,711-c8-0,00.html <p> http://www.linear.com/prod/parametric.html?mode=pft&pft=250&product_family=opamp <p> http://para.maxim-ic.com:80/compare.asp?Fam=Vid_Amp&a...

Here is the info you need.<p>http://www.echostaruser.org/ekb/70.htm<p>Ron H

Seems like it would be difficult to know when you have the dish pointed directly at the source, especially with offset feed dishes (of which the Primestar is one example). I found this illuminating article http://www.w1ghz.cx/antbook/chap5.pdf <p>This talks mostly about the 18" RCA dish, but th...

Arrow has them for $6.59. Go to http://www.arrow.com/ and search for SA605D.<p>I found this by doing a Google search for SA605D. The very first result took me to Philips, where I found a "buy online" box, which took me to Arrow. If you don't use Google or some other good search engine, you...

Mr. Al, I hate to be a wet blanket, but are you going to get enough base drive for the current you want? The ZXSC300 base drive current is 1.5ma minimum, 3.6ma maximum. Where are you going to find a transistor with the beta you need? Also, the guaranteed drive voltage is [Vcc-0.3v]. Worst case, you ...

Matthew, if I am interpreting your ASCII schematic correctly, you are using a DC-DC converter to power the ADC. The noise from this alone could be the source of your jitter. If you are also using this for the reference, it's almost certain to be the cause. These parts draw 3ma max. I would power the...

Keep in mind that you can control power delivered to a load using a triac, but you can't truly attenuate the AC line voltage using triacs,while preserving the sinusoidal waveform, without jumping through some big hoops. A triac changes the average voltage delivered to the load by duty cycle modulati...

John Albers knows how to post a quote. You there, John?<p>Ron H

Well, I clicked on the "" (reply with quote) at the top of John Albers' last post, naively assuming it would place the contents of his post in mine. Obviously, I was wrong. Regarding images - the FAQs say you can't include files. Is there a way to include an image without including a file?...

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by john albers: [QB][/QB]<hr></blockquote><p>If you have the diode V-I curve, you can use a "load line" to determine the diode's operating point for a given supply voltag...