Electronics Forum: quartz (Page 2 of 3)

Disadvantages of using the ultrasonic cleaners - PCB cleaning

Electronics Forum | Fri Aug 22 13:10:51 EDT 2008 | bschreiber

The folowing articles are available at: http://www.smartsonic.com/article.html "Why Not Ultrasonic Cleaning?" by William Kenyon "Damage-Free Ultrasonically-Assisted Cleaning of Printed Circuit Assemblies" - by B.P. Richards et al "Does Ultrason

Patented Leadless, Fluxless Solder Alloy join different material

Electronics Forum | Thu Jan 20 00:22:07 EST 2011 | yangloh

Dear Industry experts, We have just developed a leadless, fluxless solder that can join various metals ) Al, Cu, brass, Steel, stainless and Titanium) and Ceramics ( Ruby, Quartz, Sapphires, glass, TiO2, etc) We intend to explore electronics and

Advice for a newbie, please: Can an existing PSB be adapted to slow it down? Maybe add a resistor?

Electronics Forum | Mon Aug 10 20:53:32 EDT 2015 | r92024

Thanks for your reply, Rob. I wish I could attach images here, but despite the option for 'attachments,' it won't let me attach. The pendulum mechanisms are the cheap plastic type, from China, not the older style mechanical ones. Not sure if this l

Reflow soldering of Solar panels

Electronics Forum | Wed Apr 21 00:14:10 EDT 2004 | ramanandkini

We wish to use rectangular 4 segment solar panels in our quartz watches & charge the battery. The size of the soalr panel is 18.20mm X 7 mm and the thickness is 1.15mm. The other popular application of this type solar panels is in calculators. These

How actually the process of Electrofoam Stencil?

Electronics Forum | Fri Jan 07 13:17:48 EST 2005 | bschreiber

3) There are several papers on the safety of cleaning PCBs and ICs using ultrasonic technology. The latest is in the October 2004 issue of SMT magazine by William Kenyon, "Why Not Ultrasonics?" Most of the studies have been performed by Dr. B.P. Ri

Wrong Crystal

Electronics Forum | Wed Nov 20 12:10:29 EST 2019 | rossrohrer1

Trying to create my own RFID reader based off the MFRC522 demo board by copying the layout and components, then later i am planning to change the footprint. I am having trouble replicating their crystal. The mfrc522 datasheet calls for a 27.12 mhz

Re: vibration during solder reflow

Electronics Forum | Sun May 23 07:13:56 EDT 1999 | Scott Cook

| Has anyone had any experience or data using vibration during the reflow process. | We introduced a vibration device attached to the fixed rail on a Vitronics reflow oven. The reason was to prevent skewing on large PLCC devices. The process worked v

Teflon PCB's

Electronics Forum | Fri Oct 26 17:01:52 EDT 2001 | davef

We process no Teflon boards. Companies, such as Rogers and Taconic, make laminates of Polytetrafluoroethylene [PTFE] er �Teflon�. Common �Teflon� laminates are: * Woven glass / PTFE * Random microfiber glass / PTFE * Ceramic / PTFE * Woven glass /

Coatings to prevent water ingress

Electronics Forum | Sat May 24 21:49:24 EDT 2003 | ramanandkini

We have an electronic circuit with a miniature stepper motor, quartz crystal, Electrolytic capacitor,chip resistors and few smt LEDs. The PCB material is CEM1 with SMOBC and HALS finish. This circuit is assembled in a plastic casing and goes in to a

estimate solder thickness

Electronics Forum | Tue Jun 07 08:31:57 EDT 2011 | bootstrap

I am building a rugged digital video camera product that essentially is just a sandwitch of 3 parts: #1: front piece is machined aluminum with C-mount thread #2: middle piece is 1/16" printed circuit board #3: back piece is machined aluminum The


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