I have designed a machine for my employer which has a radial arm 70mm long which oscillates through 180 degrees taking about 5 seconds to go from left to right and back. The "payload" on the end of the arm can be seen to vibrate (probably at about 15Hz) and too much vibration can cause...
I need to update the electronics in some machines we have sold and one of the things the existing control circuit does is to stop a 240Vac 50Hz 40W Shaded-Pole motor/gearbox at a specific position when signalled to do so (slotted optoswitch detects slot in disc on output shaft). If this was a...
You all know the type of screw - hex head with crosspoint and a serrated flange acting like a shakeproof washer but actually part of the screw. Thread length about 6mm, diameter about 3.5mm used for securing PCI expansion cards in PCs. I need to buy these in batches of about 500 - too many for...
You all know the type of screw - hex head with crosspoint and a serrated flange acting like a shakeproof washer but actually part of the screw. Thread length about 6mm, diameter about 3.5mm used for securing PCI expansion cards in PCs. I need to buy these in batches of about 500 - too many for...
I am currently prototyping a new device which is a software controlled electromechanical unit - the central part of which is a counterbalanced radial arm which rotates about a central shaft alternately clockwise and anti-clockwise through 180 degrees taking about 2.5 seconds to move from 0 to...
