Full-Bridge Power Inverter - Selco Genesis 200 AC-DC Repair Manual

9.2.3) BOARD 15.14.250 "POWER INVERTER SECTION" (fig. 19)

Full-bridge power inverter

WARNING: before taking measurements described, open solder-jumper K2 with the machine unplugged!
Note: solder-jumper K2 causes a break in the inverter's power supply circuit and is normally closed (it may be opened to test
the power source; also see chapter 10 below)
Description of boards
Unless otherwise specified, all measurements sholud be taken with the boards in their slots and connected accordingly
Power source / Mode Component
OFF MF11
OFF MF12
OFF MF15
OFF MF16
Power source / Mode LED
ON / TIG 2T* L13
ON / TIG 2T L14
ON / TIG 2T L15
ON / TIG 2T L16
* Note: TIG 2T = 2 STROKE TIG (see owner's manual)
V S G V S
+0.25 Vdc +0.36 Vdc
+0.25 Vdc +0.36 Vdc
+0.25 Vdc +0.36 Vdc
+0.25 Vdc +0.36 Vdc
Status
ON (with torch trigger pulled)
ON (with torch trigger pulled)
ON (with torch trigger pulled)
ON (with torch trigger pulled)
D
23