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Pre-wired NK8064B & NK8064BL Gas Welder Kits

 

Video files require time to download, so please be patient.

 

Click anywhere on the picture below to start the video of a repair job being done with a gas torch on a Caterpillar road grader.

Watch for the torch ignition and startup sequence, followed by the subtle color changes during welding. This video was shortened for easier downloading (actual length of welding cycle is ~ 35 seconds).

                              

 

 Utilizing the industry’s smallest  microcontroller and associated voltage control circuitry, these modules with LED, consume less than 20 ma. This makes all of the NK8064B Kits well suited for low power applications such as battery operation but can easily be powered by any well-filtered and regulated DC power source with an output of 6-18VDC. The very small overall size of this module will allow it to be easily placed in and around any structure.

Connecting the NK8064B:

Installing the NK8064B is very straightforward. Because the module has circuitry on both sides, care must be taken to be sure that the components or wire solder points will not make contact with any metal object which could cause a short

This kit is pre-wired with input power wires already connected. The red wire is for connection to +DC and the black wire is for connection to –DC (ground). These wires are pre-tinned for easy soldering  to your power source. Figure 1 below shows a close-up of the circuit and wiring connections. Point 3, 4 & 5 are the outputs that connect to the attached LEDs with approximately 6 inches of  very tiny #38 insulated wire. Care must be taken not to kink these wires during installation

Important note: A low-wattage iron with a pointed tip should be used for connection of wires. Too much heat or solder can easily damage the wires.

 

                             Figure 1

 

Connecting theNK8064BL:

The NK8064BL includes the addition of a latching function that starts the lighting effect by  grounding the violet wire connected to  pin 6 and is timed to start  the N8301-092 or N8501-092 Gas Welding sound effect (sold separately). See Fighre 2 below.

If the sound module being used is a N8301-092 (Little Sounds without the external amplifier) the connections wound be the same between the sound board and the welding Simulator.

                                        

                                                                    Figure 2

 This grounding can be easily achieved by simply connecting (thru a push button) to a common –DC power connection. An example of this is shown in Figure 3 below. In this example, the N8501-092 (Little Bigger Sounds) version of the sound effect is shown.

 

                                                                   Figure

 

The LEDs included with this kit will provide sufficient brightness for a realistic effect. The brightest light output will be seen from the front of the LED surfaces, but these LEDs do also have relatively bright “side-shine” allowing good viewing over a horizontal angle of up to 150 degrees. Plan the positioning of the LED in your model to “point” them toward the middle of the viewing angle for best effect.

We recommend mounting the LED from the back by attaching adhesive to the wires near the back of the LEDs so adhesive is not placed directly on the LED. It is also recommended that whatever adhesive is used that it does not contain high aggressive solvents that could attack the insulation on the wires. Walthers Goo is an example of an “aggressive” solvent type adhesive. Elmers white Glue, CA (superglue) and 2-part epoxies are very safe for this type of mounting and will not damage wires or surfaces of your model in most cases.

If the LEDs are to be mounted next to a scale figure such as a person kneeling while welding, place the LEDs at the point where you wish to have the arc flicker appear and route the wires away from that position. The wires are tiny and can be easily hidden. Also, the wires can be painted if required as long as acrylic paint (non-solvent  paint) is used.

We hope the added realism it provides enhances your enjoyment of the hobby.

 

 

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