Function Description - ESAB LAW 510 Service Manual

FUNCTION DESCRIPTION

Sections 1 - - 15 below refer to the diagrams on page 6 to 12.
The circuit board is screened by a screened enclosure that is connected to 0 V on the circuit
board.
The component position drawings on page 15 to 17 also shows components that are not fitted
to the circuit board. These components are not used in the LAW power units.
1
POWER SUPPLY, CIRCUIT BOARD AP1
The power supplies from transformer TC1 to the circuit board are prepared for
fitting PTC resistors, but are now fitted with links BY1 - - BY4.
DC power supplies
The power supply supplies the following DC voltages :
+25 VC, ¦15 V, +15 VB, +5 V and +12 V.
+5V
Internal power supply on the circuit board. Voltage regulator VR2 is
adjustable: the voltage is adjusted to 5.00 ¦0.01 V when the board is
manufactured.
claw0de1
- - 18 - -
claw0e07