11:30. EEVblog #85 - High Voltage Oscilloscope Probe Design, EEVblog #84 - High Energy Multimeter Destruction. Slide the part into place and remove the iron. Like moving a mouse while you hold down the left button. If you want to create solder mask for the track, you can click the "Expose Copper" button at the right-hand property panel. EEVblog #1332 - Facit Mechanical Calculator! When properly configured, the top of the wave is perfectly motionless – until the assembly enters the wave. 'Blown to Bits' is about how the digital explosion is changing everything. The text explains the technology, why it creates so many surprises and why things often don't work the way we expect them to. In drag soldering, we drag a blob of solder across the IC pins, depositing some on each as it goes by. EEVblog #27 - More Engineering Job Interview Tips! The general belief is that nitrogen’s role is dross reduction. EEVblog #1314 - Ultrasound Machine Teardown! Yes, it's the presence of the liquid flux that helps to draw the solder to the correct places. (The second wave also provided additional heat to help complete solder fill of plated holes.) EEVblog #1256 - GORGEOUS Mystery Test Gear Teardown! Test. Using robots for soldering can be a solution as a robot works very precisely and efficiently. EEVblog 1383 - Human Battery Energy Harvesting BUSTED, EEVblog 1382 - Keysight EDU34450A 5.5 digit Bench Multimeter TEARDOWN, EEVblog 1381 - Argon Ion Laser 10kW PSU Teardown. The through-hole lead plows into the solder wave like the prow of a boat. Schematics in Diptrace is a module for creating and editing electrical designs. The Art Of Electronics 3rd Edition is Almost Here! With plated through-holes, the objective should be complete vertical fill of plated holes. Hold the chip in place while touching the corner pad with the tip of the soldering iron so that the solder melts the pin and the pad together. Soldering differs from welding in that soldering does not involve melting the work pieces. Entrapped flux globs often showed up in connections which should have been filled with solder. The usual practice today is solder paste reflow (generally through ovens) for both sides of the PCB. For chips with many pins and dense pins, in addition to spot welding, drag soldering can be used, that is, putting in on one side of the pin and then using a soldering iron to melt the solder to the remaining pins on that side, the melted solder can flow, so sometimes the PCBA board can be properly tilted to get rid of the excess solder. EEVblog #631 - How To: Soniq LCD TV Repair - Part 2, EEVblog #630 - Soniq LCD TV Troubleshooting Repair, EEVblog #629 - How To Design a Microphone Preamplifier, EEVblog #628 - Tektronix 213 Vintage Portable Oscilloscope Teardown, EEVblog #626 - Ceramic Capacitor Voltage Dependency, EEVblog #625 - Retro Teardown: Sony's First Digital Camera, EEVblog #623 - See Through Thermal Camera Followup, EEVblog #622 - How To See Through Objects With A Thermal Camera, EEVblog #621- Stanford Research SR650 Repair - Part 2, EEVblog #620 - Repair: Stanford Research SR650 Programmable Filter, EEVblog #619 - Dumpster Dive PABX Teardown, EEVblog #617 - Tektronix Oscilloscope Anomaly, EEVblog #616 - How Microphone Phantom Powering Works, EEVblog #614 Part 2 - Cebit Australia 2014 Walkaround, EEVblog #615 - Prema 6047 Multimeter Followup, EEVblog #613 - Prema 6047 Multimeter Teardown, EEVblog #611 - Electret Microphone Design, EEVblog #610 - Why Digital Scopes Appear Noisy - Part 2, EEVblog #609 - Condenser Microphone Design Tutorial, EEVblog #608 - Condenser & Electret Microphone Construction, EEVblog #607 - Agilent B2912A Source Measure Unit SMU Teardown, EEVblog #605 - Fig.8 & Cardioid Microphone Patterns, EEVblog #604 - Sinclair C5 Restoration - Part 1, EEVblog #603 - Gas Sensor Teardown - Dräger Multiwarn II, EEVblog #602 - Introduction to Microphones, EEVblog #601 - Why Digital Oscilloscopes Appear Noisy, EEVblog #598 - Sony DME7000 Video Multi Effects Processor Teardown, EEVblog #597 - Fluke 114 Kit Multimeter + Sparkfun/Fluke Rant, EEVblog #596 - World's Cheapest Soldering Station - Yihua 936, EEVblog #595 - World's Shittiest Camcorder: Teardown, EEVblog #594 - How To Measure Power Supply Ripple & Noise, EEVblog #593 - HP53670A DSA Repair Part 4 - Thermal Testing, EEVblog #591 - Agilent 54622D Retro Mixed Signal Osciloscope Review & Teardown, EEVblog #590 - DIYINHK USB Soldering Microscope Review + Tagarno FHD ZIP, EEVblog #589 - Voltech PM300 Power Analyser Teardown, EEVblog #588 - How To Do PCB Production Testing, EEVblog #587 - Tektronix MDO3000 Mixed Domain Oscilloscope Teardown, EEVblog #586 - Open Source Hardware uARM 4-Axis Desktop Robotic Arm Kickstarter, EEVblog #585 - Lab Bench ESD Matting Upgrade + Tagarno HD Microscope. Longer time over the heating elements could scorch the PCB while excessive solder temperature generated more dross, degraded machine components faster and caused sagging or delamination of the PCB. The process was quickly abandoned except for a few primarily mechanical assemblies. Interatomic attraction prevents a second defect: lifted parts. 5. for the addition of extra components to a machine soldered assembly. EEVblog #1088 - Uber Autonomous Car Accident Report. EEVblog #1222 - Apple's MacBook Design FAIL - Who's To Blame? ANENG Q1 Review (4K! Using the hot air rework to replace the STM32 will be quick and easy. Before going to the creation of the schematics, you should know about the schematics basics. This is the first in a series of articles intended to take the mystery out of all aspects of soldering, beginning with the first successful method of large-scale production soldering. EEVblog #1066 - Uber Autonomous Car Accident - LIDAR Failed? EEVblog #1060 - $35,000 DataIO Unisite Universal Programmer Teardown! EEVblog #744 - SMD Thermal Case Design - µSupply Part 15. The rapid solder flow with the chip wave also means rapid separation of parts from solder that causes bridges. Part 3 of the hand soldering tutorial. EEVblog #1001 - uBeam Ultrasonic Wireless Charging DEBUNKED, EEVblog #1000 - Fundamental Mailbag Retro Teardown Shootouts are Bullshit. The basic principle of wave soldering is fairly simple. 7. Automated robot soldering with drag&bot ¶. Heaters were introduced to drive off solvents, activate the flux and gradually increase PCB temperature so the circuitry would not experience thermal shock (abrupt changes in dimensions of the PCB when subjected to the high solder temperature). Where the pure metal had reactive energy, the compound is stable (often referred to as “passive”). EEVblog #675 - How To Reverse Engineer A Rigol DS1054Z, EEVblog #672 - GoPro Hero 4 Silver Teardown, EEVblog #671 - White Van Speaker Scam Teardown, EEVblog #670 - FLIR TG165 Lepton Sensor Followup, EEVblog #669 - FLIR TG165 Thermal Imager Teardown, EEVblog #667 - Agilent 6643A Power Supply Binding Post Hack, EEVblog #665 - Polar Wearlink Heart Rate Transmitter Teardown, EEVblog #664 - Peltier TEG Energy Harvesting Experiments, EEVblog #663 - Compucorp 322G Calculator Teardown, EEVblog #662- How & Why to use Integration on an Oscilloscope, EEVblog #660 - Electrocardiogram (ECG) Experiments, EEVblog #657 - Maker Faire 2014 Interviews, EEVblog #656 - Pacemaker Monitor Teardown, EEVblog #654 - Sydney Maker Faire 2014 Behind The Scenes, EEVblog #653 - Sydney Maker Faire 2014 Highlights, EEVblog #652 - Oscilloscope & Function Generator Measurement Trap, EEVblog #650 - Canon HF G30 / XA20 / XA25 Camcorder Review, EEVblog #649 - Power Designs 2005 PSU Teardown, EEVblog #647 - Agilent 53131A Frequency Counter Oven Upgrade. EEVblog #1257 - MORE! Drag soldering: Drag soldering is another hand soldering technique used for surface mounted components. The author, with nearly four decades of experience in R&D, technology development, and education and training, provides a practical and hand-on approach to the subject, by covering the latest technological developments and covering all the ... Finally, for assemblies with plated through-holes, the temperature on the top side of the PCB must be greater than the melting temperature of solder to prevent solder from freezing before achieving complete vertical fill of the hole. EEVblog #1002 - Trump's Solar Freakin' Wall DEBUNKED! An abridgement of a 17-volume set of instructional materials, this guide offers brief descriptions of some 130 manufacturing processes, tools, and materials in such areas a mechanical, thermal, and chemical reducing; consolidation; ... Through-hole hand soldering is one of the primary techniques to master. a “symmetrical wave”), in essence a dam except with flow to the back as well as the front. Says the author" "This book... is not written for the members of fringe political groups, such as the Weatherman, or The Minutemen. Those radical groups don't need this book. They already know everything that's in here. A comprehensive reference book for those with interest in, or need to know, how operations in the world's factories work, and how common products, components, and materials are made. A good SMD solder tip is a well tip that holds solder via surface tension in a hole like well at the tip as you drag solder the tip over all the pins. Much of the soldering for fuses had to be carried out by hand. By John Gammel, MIT (Master IPC Trainer. In fact, surface tension causes the solder to be repelled by the oxidized surface. So, bridging once again became a serious problem. EEVblog #1128 - Studio Monitor Speaker Noise - Part 2. EEVblog. She has extensively explored the educational potential of LEGO robotics. She is the author of Android Tablets Made Simple. This book is not authorized or endorsed by the LEGO® Group. The lessons and steps used in this guide can be used appiled to any prop. It comes out beautiful with minimal solder and no bridges. 3.6. In other words, they used a primitive wave soldering process. Solder paste makes the PCB dirty. The glue cost money and needed curing, which meant adding even more equipment (typically heaters or UV, depending on the type of glue) and increased processing time. Build. We picked up the receiver and asked a human to make the call. Most “icicles” result from oxides encasing the liquid solder and killing the surface tension that causes solder to pull back. Check Out RIGOL’s Latest Promotion Now! EEVblog 1407 - Right to Repair with iFixit Founder Kyle Wiens, EEVblog 1406 - DC Circuit Transients Fundamentals, EEVblog 1405 - Focusrite Scarlett Solo vs Rode AI-1 TEARDOWN, EEVblog 1404 - The Amazing HP 9845B Computer, EEVblog 1402 - Rohde & Schwarz NGA100 PSU Teardown + GIVEAWAY, EEVblog 1401 - DC Power, Efficiency, & Maximum Power Transfer Theory. Soldering video Tutorial Part 2. EEVblog #1125 - Amazing $500 Soldering/Inspection Microscope! EEVblog 1400 - Hard Drive Micro Actuators are AMAZING! Instead of a muscular human to do the heavy work, a conveyor moved the assembly onto, across and out of a solder pool. Please keep in mind that you should at least have a good soldering iron and some very basic knowledge on how to do a proper solder connection. EEVblog 1377 - The Amazing UNPREDICTABILITY of Fuses! Patch Welding Tutorial. EEVblog 1428 - Sony RX100 IV Camera Repair and then WTF! EEVblog #1175 - How To Become A Professional Engineer, EEVblog #1174 - Rohde & Schwarz PSU Teardowns, EEVblog #1173 - Rohde & Schwarz Power Supply Bonanza, EEVblog #1172 - TRIAC Testing (WEP Meltdown Part 2). EEVblog #944 - Has the Future Arrived Yet? (In other words, minimize the area covering SMDs.) It is used for drag soldering and pre-tinning of lead wires. 3. space applications. EEVblog 1409 - The DANGERS of Inductor Back EMF. The lead is then soldered on the opposite side of the board. During passage through the wave, the exposed leads are soldered while the SMDs previously soldered to the bottom of the PCB are protected. However, that solder sees as a mass of metal may not be recognized by the human brain. The majority of solder comes in the form of a coiled length of wire, or less commonly as pellets, with a range of diameters or gauges available to suit various applications and joints.
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