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As an alternative, many circuit board assembly houses coat assemblies with a layer of transparent conformal coating rather than potting. [5] Conformal coating gives most of the benefits of potting, and is lighter and easier to inspect, test, and repair. Conformal coatings can be applied as liquid or condensed from a vapor phase.
Desoldering may be required to replace a defective component, to alter an existing circuit, or to salvage components for re-use. Use of too high a temperature or heating for too long may damage components or destroy the bond between a printed circuit trace and the board substrate. Techniques are different for through-hole and surface-mounted ...
In electronics, turret boards were an early attempt at making circuits that were relatively rugged, producible, and serviceable in the days before printed circuit boards (PCBs). As this method was somewhat more expensive than conventional " point-to-point " wiring techniques, it was generally found in the more expensive components, such as ...
On Wednesday 25 July 2012, passengers of the London cable car were stuck 90 meters in the air when a power failure caused the gondola to stop over the River Thames. The fault happened at 11:45 am and lasted for about 30 minutes. No passengers were injured, but this was the first problem to ever hit the London's new cable car link. [44] [45]
A cable railway is a railway that uses a cable, rope or chain to haul trains. It is a specific type of cable transportation . The most common use for a cable railway is to move vehicles on a steeply graded line that is too steep for conventional locomotives to operate on – this form of cable railway is often called an incline or inclined ...
A San Francisco cable car on the Powell & Hyde line. A cable car (usually known as a cable tram outside North America) is a type of cable railway used for mass transit in which rail cars are hauled by a continuously moving cable running at a constant speed. Individual cars stop and start by releasing and gripping this cable as required.
SMEMA is an acronym for the Surface Mount Equipment Manufacturers Association.. In 1999 they merged with the IPC to form the IPC SMEMA Council. [1]One standard they have is for the wiring of communications between Surface mount technology producing machinery such as a Stencil Printer or a Pick and Place Machine on an Electronics production line.
A stamped circuit board (SCB) is used to mechanically support and electrically connect electronic components using conductive pathways, tracks or traces etched from copper sheets laminated onto a non-conductive substrate. This technology is used for small circuits, for instance in the production of LEDs. [1]