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21.M161-Ultrasonic Power Cannon
22.L100-Conductive Silver
24.M172N-Bicycle Power Charge Controller USB
25.M168-Overvoltage Protection 12 V/DC
26.M169A-Temperature switch-thermostat 12 V/DC
27.M158-Water Switch 9 - 12 V/DC
28.M113A-Time switch 12 - 15 V/DC
29.M091N-Phase Coupler for Power Line Products
30.M012-Power Control 110 / 240 V/AC, 1200 VA
32.M152-Rain Sensor 12 V/DC
33.M202-Lead-Acid Battery Activator / Refresher 12 V
34.A001-Bending device
35.B093-Electronic dice
36.M094N-Marten repeller
37.M128N-HF Detector (Mini Spy Finder)
38.E003-Experimental board - strip grid
39.M114N-Flasher, slow 240 V/AC, 110 V/AC
40.M122-Twilight switch 12 V/DC
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Soldering course - page 15

Picture of a tin-bridge

This picture shows another frequent mistake - a tin-bridge ("short circuit"). (black frame)
When the gap between two lands is pretty narrow the solder may link those two as can be seen here.

SOLUTION:Just apply as much solder as necessary to cover the land and the wire.

NOTE: It is very important to hold the soldering joint in such way to head just one land at a time.

Ursache: Lötzinn wurde zu lange erwärmt, dadurch ist das Flußmittel im Lot verdampft und die Lötstelle geht keine Verbindung mit dem Zinn mehr ein.

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soldering presentation shortform

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