Magswitch Technology MAGJIG95 On/Off Magnetic with 95 lb/43 kg of Vertical Holding Force Yellow

Product Information

Magnets can be positioned at different points on the fence for optimal placement on drill press tables. Power to the load can be switched on or off by momentarily placing a magnet near the circuit. This allows the circuit to be completely enclosed within the aircraft fuselage.The current drawn from the batteries while in the off-state mode should be as low as possible. It should take more than one year to discharge the battery.The voltage drop across the switches should be as low as possible to keep power dissipation, heat, and losses to a minimum. Don’t heat up Magswitch ® magnets. Like all neodymium magnets, high temperatures can partially demagnetize them. Avoid anything above 176°F (80°C).

At this point I was pretty bummed out. It was obvious that the BEC was not capable of handling 5A as a continuous load. This result was not unexpected. I was boning up on thermal resistance and power dissipation of PCBs while traveling and had determined that a PCB this size could only handle about 0.5W of power dissipation to keep the junction temperature of the switcher IC less than 150°C.With up to 1,100 pounds of hold force, on thin material, important when used in barge and tank building. Productivity and Cost to Deliver Downtime is eliminated with Magswitch, unlike traditional steel lifting systems. With a 100% duty cycle, no more standing or waiting around. Cost Savings In Automation Magswitch tools fill two categories, pneumatic actuated tools and electric actuated tools. In pneumatic tools does not rely on a constant source of vacuum or air pressure to operate. Our pneumatic cylinders are used for app. 300-400 milliseconds for an on and off cycle, the balance of the part movement time uses no air, when compared to other products Magswitch uses app 90% less air. This is a significant saving and often energy savings repay capital cost in around 12 months. Magswitch E-Tools(electric) can eliminate all air requirements in a body and white production line. The Magswitch e-tool only requires an electric pulse for as little at 100milli-seconds to turn on and to turn off. Both The e-tools and the p-tools(pneumatic) do not require energy to hold position. This means in the event of a power down they fail safe and hold position, no parts dropped. What does Magswitch fail safe mean? I assembled one of the second pass 30A prototypes using different FET switches than the first pass -- substituting a Vishay SiSS28DN for the IRLHM620. The Vishay part claimed slightly lower RDSon (1.6mΩ vs. 1.8mΩ @ VGS = 4.5V) and a higher max VDS of 25V instead of 20V. I thought, erroneously, that the higher voltage rating might improve the survivability of input transients when batteries are plugged into the input. The addition of R1 between the input and the LDO solves the problem by eliminating the capacitor (C2) that caused the ringing so a higher voltage rated FET is not required to support 2S-4S LiPo batteries.

This is what the input transient looks like without any circuit changes made for protection and R2 = 25mΩ for the battery resistance:

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The switch no longer is sensitive to disconnection by high currents. I ran more than 35A through it and it remained closed. Our Vertical Featherboard adds a dimension of dual plane workholding. For use with the Woodworking Starter Kit and the Pro Table Featherboard. In the Magswitch Workholding System, it mounts to the Reversible Featherboard Attachment, Universal Mounting Base and MagJigs, each sold separately. Pro Table Featherboard Most of the extra area is for the larger area required by M1 and M2. I added space between U2, the Hall effect switch, and the high current ground trace -- hoping 3.5mm is adequate distance to prevent the switch from tripping off during high current events. If that doesn't work, then the Hall effect switch will have to be moved off the board. The landing pads for B+, B-, OUT+ and OUT- are not through hole -- I decided that the large 12-14 AWG stranded wire would undergo a severe 90° bend if forced into a hole, so now the wires are simply soldered to a landing pad. The landing pads will accommodate up to 120mil diameter wire (12 AWG). In addition, there are numerous vias to help spread the heat and conductance between the top and bottom layers. The board will use 2 oz. copper for improved heat dissipation. Designed to work on any cast-iron table to hold down your work so you don’t have to. It works on both sides of the blade and even the fence. It features two 20mm Magswitch MagJig 95 magnets. Guides Dual Roller Guide

Is it physically possible to make something like this using a few neodymium magnets from K&J? Sure, it’s possible. In fact, when we started investigating how these things worked, we couldn’t resist building one ourselves! The condition of the surface also matters. If it’s painted, the magnet is a tiny bit farther away from the steel, so you get less force. Have a rusty surface? Less force. Maybe your surface has an irregular shape; this might also affect the force. When you rotate the knob, you’re rotating the top diametrically magnetized disc magnet by 180°. Now the magnetic field flows from one magnet, through the steel wall and into the other magnet. The Magswitch MagPress magnetic press has descended from one of the most disruptive tools, the MagPry. Designed to help welders to level sheets is the only way to level and align steel. Remove high/lows with ease by placing the magnet on low, prying on high and welding with the other hand. This method allows for an individual to align two sheets and weld the separate sheets 100 times faster than using dogs and wedges. The traditional method took app 20 minutes, Mag Pry, with a 1000Lb magnet, completed the process in 12 seconds. Magnetic Press Innovation

Our products are designed to be ‘fail safe’ since there is no need for any power during a lift. With a positive indication of the magnetic circuit, the operator can confidently perform knowing the material is fully attached. Magswitch offers Electric, Pneumatic, or Manual for ‘on-off’ actuation. Performance

The change from the AH180 hall-effect sensor to the S-5716 sensor changes the way that the switch works. Previously, the switch would change state when the magnet was removed. Now... Read more » Our dual roller guide has a dual set of roller bearings to firmly support the smooth gliding of wood through a blade. Requires our Woodworking Starter Kit and mounts to the Universal Mounting Base and MagJigs, sold separately. Resaw Guide If you need more than a design, we’ve got you covered at a fraction of the cost of a machine shop. Magswitch can help you customize a range of components to expand the usability of your tool. The example shown uses two RC4CDIA, diametrically magnetized ring magnets. We chose ring magnets instead of cylinders because they were easier to mount using off-the-shelf hardware. We put them side-by-side to make it easier to build and see.Magswitch is a breakthrough in control and strength of permanent magnets, making the shipbuilding process faster, safer and delivered at a lower cost,” said David Morton, Chief Executive Officer. “Magswitch is being used in over 100 major shipyards around the world. At Magswitch, we strive to ensure every Magswitch tool makes the work place safer, improves productivity, is maintenance free, reduces energy consumption, is easy to use and has an ROI measured in weeks or months. In short, a Magswitch tool is designed to exceed customer expectations! Magswitch products have flexible options to handle your lifting needs & adapt to odd or round shapes. Downtime The twist on this application is that it should remember the state of the switch if the input power is disrupted or disconnected for up to 10 seconds. It would be disastrous if the power glitched during a flight and the switch permanently disconnected all of the electronics controlling the operation of the aircraft. I used a 22Ω 1W resistor for an easy load test. The BEC did not have a problem with this load and the output decreased only about 20mV over the entire input voltage range.