T&L Publications

Hi Mike!
So what is a "laser alarm"?
And, are you looking to find a dialer circuit?

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by jwax: Deal- I have access to a CNC laser cutter, so if you end up wanting another quote, let me know! There's nothing like "rolling your own", but if you need a cuttin...

It measures how much this will cost you, Grant!
hehe!

Also, keep alert for industrial equipment auctions- many different industries use ultrasonic cleaners.
Again, if you find a source for components, let us know!

I can't believe the stupidest piece of junk gadget topic is up to 3 pages! Who keeps writing in?

Tried that myself for cleaning gun parts. I found the DIY approach too expensive because the transducers in small quantity are spendy! $60+. Then you have the joy of matching inductors to the likes of Branson, or Crest units. To repair a 1 gallon unit with blown transducers, would have cost $160, a ...

Contact the radio manufacturer and let them know about the faulty installation. Try a competitive installer for their opinion.
Then there's always grounded aluminum foil!
Good luck! I prefer the older radios over the fancy-dancy new crap anyway!

Your biggest problem is how to get to the gold-if it's molded in plastic it's not available for any of your etchants. Exposed gold on connectors, pcb's, etc can be safely etched (disolved into, then reclaimed) by what is called "KI&I". It is a mixture of Potassium Iodide and Iodine. Re...

I used a Curtis Instruments MOSFET controller for a 48V, 175A electric go-kart.
http://www.curtisinst.com/
There's many concerns about throttling 5-10 kilowatts that the amateur might do well to leave to a pro! (Heat, emergency shut-down, runaway, acceleration limiting, to name a few) Just my 2c.

Keep in mind that bulbs that seem to burn out early, or troublesome lamps, can be a fire hazard.
An electrician would know.
At least keep good batteries in your smoke detectors!

Don't forget the capacitor shown in Fig. 17, too!

"We're not here to discuss your jewelry, Clotheyes, where's "YELLOWBEARD?" My favorite movie, Perfectbite!

Check your 'earing @:
http://www.phys.unsw.edu.au/~jw/hearing.html

I agree Perfectbite (retired dentist?)! For common tasks, there's many solutions, but as correct solutions become less and less, the complexity grows rapidly! Then comes the complication of picking the "best" solution. Is best cheapest? Or quickest? Or coolest? When I'm miffed for a soluti...

You'll get some ideas (or copy theirs) on SCA detectors from: http://www.fineware-swl.com/sca.html
Built one years ago for 67 KHz.
Good luck, Mike!