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2. Point-to-point construction - Wikipedia

   en.wikipedia.org/wiki/Point-to-point_construction

   A terminal strip has stamped tin-plated copper terminals, each with a hole through which wire ends could be pushed, fitted on an insulating strip, usually made of a cheap, heat-resistant material such as synthetic-resin bonded paper , or bakelite reinforced with cotton. The insulator has an integral mounting bracket, sometimes electrically ...

3. Solder alloys - Wikipedia

   en.wikipedia.org/wiki/Solder_alloys

   Soldering copper pipes using a propane torch and a lead-free solder. Solder is a metallic material that is used to connect metal workpieces. The choice of specific solder alloys depends on their melting point, chemical reactivity, mechanical properties, toxicity, and other properties. Hence a wide range of solder alloys exist, and only major ...

4. Thermocouple - Wikipedia

   en.wikipedia.org/wiki/Thermocouple

   A thermocouple (the right most tube) inside the burner assembly of a water heater Thermocouple connection in gas appliances. The end ball (contact) on the left is insulated from the fitting by an insulating washer. The thermocouple line consists of copper wire, insulator and outer metal (usually copper) sheath which is also used as ground. [33]

5. File:Reference tables for the Platinel II thermocouple (IA ...

   en.wikipedia.org/wiki/File:Reference_tables_for...

   The need of reference tables for this thermocouple was made evident by the growing acceptance and increased usage of it. Twenty-seven thermocouples made of 20-, 30-, and 40-mil diameter elements drawn from three separate melts of the positive and negative alloys were calibrated.

6. Solder - Wikipedia

   en.wikipedia.org/wiki/Solder

   Electrical solder with an integrated rosin core, visible as a dark spot in the cut end of the solder wire. Main article: Flux (metallurgy) Flux is a reducing agent designed to help reduce (return oxidized metals to their metallic state) metal oxides at the points of contact to improve the electrical connection and mechanical strength.

7. Wire wrap - Wikipedia

   en.wikipedia.org/wiki/Wire_wrap

   The 30 AWG Kynar wire is cut into standard lengths, then one inch of insulation is removed on each end. There are three ways of placing wires on a board. In professionally built wire-wrap boards, long wires are placed first so that shorter wires mechanically secure the long wires. Also, to make an assembly more repairable, wires are applied in ...