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21.M152-Rain Sensor 12 V/DC
22.M149N-Solar Charging Controller 12 V/DC, 10 A / 20 A
23.M038N-DC-Converter
24.M229-Marten Defence for Motor Vehicles, battery-operated with positive-negative contact plates
25.M028N-Power control 110 - 240 V/AC, 4000 VA
26.M122-Twilight switch 12 V/DC
27.M161-Ultrasonic Power Cannon
28.M032S-Universal Amplifier 12 W "Plug & Play"
29.FG025-Pasture Fence Device - High-Voltage Device for Electric Fences
30.Z100-Marten Repellent Spray
31.M174-Solar charging regulator Dual 16 A
32.G023N-Case With Fastening Straps approx. 74 x 51 x 28 mm
33.M071N-Ultrasonic vermin repeller
34.M012-Power Control 110 / 240 V/AC, 1200 VA
35.M069N-Underground mole & vole repeller
36.M240-Power Control 230 V/AC, 10 A, Multifunction
37.M197-Twilight Switch 12 - 28 V/DC
38.M091A-Phase Coupler for Power Line Products
39.FG025SET-Marten and Raccoon Repeller Electric Fence
40.L001-Piezo spherical dome tweeter with flare
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Soldering

Soldering course - page 14

Picture of a cold soldering joint and a poor connection

In this picture you may see a "cold soldering joint" (black circle) and a poor connection between wire and land (white circle).

REASON: The solder was heated too long. Therefore the flux filling of the solder vaporized and the solder cannot connect with the land.

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soldering presentation shortform

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