86
Function over-
view
The diode modules go together to make up the secondary rectifier. The secondary
rectifier transforms the welding transformer’s alternating current into a direct current,
which is fed to the welding sockets
Measuring points There are two diodes in every diode
module. Measurement on the diode
regions must produce a result of approx.
0.2 V.
Fig.63 Diode module
Torques:
- Copper clips and PC board on power semiconductors:
Pre-tighten with 0.5 Nm, tighten with 1.5 Nm
- Power semiconductors on heat sink:
Pre-tighten with 0.5 Nm, tighten 2.1 Nm
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