Construction techniques Flashcards
(10 cards)
What is a PCB?
A Printed Circuit Board that mechanically supports and electrically connects electronic components using conductive tracks.
What are two main methods to produce a PCB?
Computer Numeric Control (CNC) milling and chemical etching.
Name three tools or equipment used in CNC production of PCBs.
CNC milling machine, drill bits, computer software for programming.
What is the basic process of CNC PCB production?
A computer-controlled milling machine removes unwanted copper from the board to create tracks.
Name three tools or equipment used in chemical PCB production.
Copper-clad board, photoresist film, etching chemicals (e.g., ferric chloride).
What is the basic process of chemical PCB production?
Apply photoresist, expose to UV light, develop the pattern, then chemically etch away unwanted copper.
Why are PCBs preferred over traditional wiring methods?
They provide compact, reliable connections, reduce wiring errors, and are easier to mass produce.
What factors should be considered when designing an electronic circuit on a PCB?
Component placement, track routing, electrical safety, and minimising interference.
Give one advantage of using CNC for PCB production.
High precision and repeatability.
Give one advantage of chemical etching for PCB production.
Suitable for small scale or complex designs with fine tracks.
