borders-tom
New Member
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- 7
- Location
- Hawick, Borders
Thought I'd post on the SIP T136 having had a chance to look it over for an hour or so, it has not been used to weld so far.
The general layout:
The wire-spool side:
The printed circuit board, showing its version number (2015-12-3, MIG-ZKB, Version: 7.2):
The PCB again and the little 24V transformer:
It's as well to report here that it seems the silkscreen printing on this board has an obvious silly error -which portends that there might be more - the PCB 24V ac input (blue and blue wires) connections are shown reversed with the pair that run to the torch switch (blue and red wires). 24V AC input is pins 1 and 3, torch switch is on 2 and 4. It's wired correctly just printed wrongly. This could lead modders astray if not taken into account.
Interestingly, at the other, unpopulated side of the board there's provision for another AC input, bridge rectifier and capacitor, for future exploration.
I've got a much beefier wire drive, for which I'll need to implement an adequate power supply, with euro connector, plus an MB-15 torch, gas solenoids etc. winging their way to me. Can then probably add a large output capacitor to the arc feed. Am tripping over transformers and PWM controllers so they're possibilities. In the medium to longer term the original PCB might be relegated to the spares horde. Still like the idea of stepping up/down the motor voltage with user switched welding voltage changes, but with fine control, motor braking and more, rather than the present arrangement with which the wirespeed must fluctuate.
Must see how it performs, as is, if it's as expected or not, before setting about it, might be pleasantly surprised..
tom
The general layout:
The wire-spool side:
The printed circuit board, showing its version number (2015-12-3, MIG-ZKB, Version: 7.2):
The PCB again and the little 24V transformer:
It's as well to report here that it seems the silkscreen printing on this board has an obvious silly error -which portends that there might be more - the PCB 24V ac input (blue and blue wires) connections are shown reversed with the pair that run to the torch switch (blue and red wires). 24V AC input is pins 1 and 3, torch switch is on 2 and 4. It's wired correctly just printed wrongly. This could lead modders astray if not taken into account.
Interestingly, at the other, unpopulated side of the board there's provision for another AC input, bridge rectifier and capacitor, for future exploration.
I've got a much beefier wire drive, for which I'll need to implement an adequate power supply, with euro connector, plus an MB-15 torch, gas solenoids etc. winging their way to me. Can then probably add a large output capacitor to the arc feed. Am tripping over transformers and PWM controllers so they're possibilities. In the medium to longer term the original PCB might be relegated to the spares horde. Still like the idea of stepping up/down the motor voltage with user switched welding voltage changes, but with fine control, motor braking and more, rather than the present arrangement with which the wirespeed must fluctuate.
Must see how it performs, as is, if it's as expected or not, before setting about it, might be pleasantly surprised..
tom