R
rijo1
Guest
Hi everyone , I am working on a circuit board out of a Mig Welder . I
can't get any factory parts or schematic for this board . The welder is
a Telwin Multi-Mig . The model number is : 90090 . It was manufactured
in Italy .
The problem is a carbon resister burnt on the circuit board in between
2 transistors and I can't determine it's proper ohm's value for the
circuit . One transistor is a MPS A92 which is silicon high voltage,
general purpose amplifier with the resister connecting to the base of it
..
The other end of the resister connects to the base of a BUV46 which is
a silicon NPN power transistor for switching power applications .
Can someone please calculate the proper resistance to replace the
burnt resister for me .
Thanks in advance to all who help , Rick
can't get any factory parts or schematic for this board . The welder is
a Telwin Multi-Mig . The model number is : 90090 . It was manufactured
in Italy .
The problem is a carbon resister burnt on the circuit board in between
2 transistors and I can't determine it's proper ohm's value for the
circuit . One transistor is a MPS A92 which is silicon high voltage,
general purpose amplifier with the resister connecting to the base of it
..
The other end of the resister connects to the base of a BUV46 which is
a silicon NPN power transistor for switching power applications .
Can someone please calculate the proper resistance to replace the
burnt resister for me .
Thanks in advance to all who help , Rick