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Soldering Course
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31.M071N-Ultrasonic vermin repeller
32.M229-Marten Defence for Motor Vehicles, battery-operated with positive-negative contact plates
33.M113A-Time switch 12 - 15 V/DC
34.M174-Solar charging regulator Dual 16 A
35.M031N-Amplifier 3,5 W, universal
36.M033N-Amplifier 18 W, universal
37.FG025-Pasture Fence Device - High-Voltage Device for Electric Fences
38.M091A-Phase Coupler for Power Line Products
39.B093-Electronic dice
40.M168-Overvoltage Protection 12 V/DC
41.M122-Twilight switch 12 V/DC
42.M197-Twilight Switch 12 - 28 V/DC
43.Z100-Marten Repellent Spray
44.M204-Power Control 230 V, max. 16 A for heaters
45.FG025SET-Marten and Raccoon Repeller Electric Fence
46.M240-Power Control 230 V/AC, 10 A, Multifunction
47.M029-DC/DC Converter
48.M048N-Ultrasonic Generator
49.B156N-FM receiver
50.Z101-Scent marks remover
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Soldering course - page 13

Picture of a cold soldering joint

The soldering joint on the far right is clearly a so called "cold soldering joint". (arrow) . The solder applied only to the wire not the land. The difference to the surrounding soldering joints is obvious.

REASON: Only the wire was heated; not the land.

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soldering presentation shortform

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