Is ***.DWG the most common file extension when dealing with vendors?
If ***.DWG is not the most common file extension, what is the most common file extension?
Have AutoSketch 9 and it isn't saved correctly to ***.DWG.
Have TurboCAD Designer 17.2 and find it difficult to use.
Which 2D program...
How is the heat getting out of the coil?
Radiating out the sides of the coil?
Conducted through the core the coil is wound on?
Conducting through whatever the coil is mounted on?
The easiest way to design a coil like this is to measure the temperature rise of a coil that you have made.
Merely...
The real question is does your colleague believe that you provide inadequate documentatin or is your colleagure playing office politics.
If your colleagure believes that you are providing inadequate documentation, then discuss what should be documented with your colleague and with your boss...
Test the same as you would test the ratio of a transformer. (Which it is when the additional turns are added)
Wind the 10 turns on.
Assemble the core. The solenoid should be closed for all tests.
Apply 1/4 rated coil voltage to the molded coil.
Measure the voltage of the molded coil and the...
If the solenoid was originally designed for 60 hertz,
Wind say 10 turns over the coil. Use small wire say #30 film insulated.
Put the original steel back in the solenoid with the solenoid closed.
Excite the coil at some low voltage. Use 60 hertz line and the original coil.
Measure the voltage of...
DC solenoids usually require a high voltage to pull in and a lower hold voltage to prevent the solenoid overheating.
A transistor is frequently used to apply full voltage for say 300 millisecond and then turn the voltage on and off at a high frequency to obtain a lower average voltage.
Ross...
3 amp continous from a 2 amp transformer. Not advisable.
8 amp for short periods. Some small transformers will handle this, and some transformers output voltage will drop drastically.
Buy a DC welding machine. A new machine will cost less and work better than trying to rework an AC welder.
The DC welding machine's AC characteristics are critical in how well the welding machine welds.
When Glenn Pacific was building welders, the procedure was to design the welder and then...
Medical equipment have their own standards.
Get copies of all medical standards that apply to the product that you intend to manufacture.
Read all the appliciable standards before designing anything.
Back when I was designing transformers, the maximum dryout temperature was something under 100degC. The thinking was that if temperature got over 100degC, any moisture would turn to steam, and the pressure of the steam would damage the insulation.
Use square or rectangular wire. (or maybe copper strip)
This will give the largest % copper fill.
Square or rectangular wire is difficult to wind in the smaller sizes, so a fairly large size wire is prefered for winding.
Size the wire to obtain the correct resistance for the power supply that is...
Water capacitors were researched many years ago and there were papers written on using water capacitors.
The secret to using water capacitors was to charge the capacitors up fast and immediately discharge them.
If the capacitors were charged too long an explosion would result as mentioned by...
Have made many partial discharge tests of oil cooled and dry type transformers to 60 kV RMS. (test equipment limitation)
When testing dry type transformers, the partial discharge start voltage is very repeatable.
When testing oil cooled transformers, if the test voltage is held for any length of...
Have worked at 3 companies that made oil cooled/insulated transformers. The policy at all three companies was to have 10% air space at 25 deg C. Transformers were 65 deg C rise. 10 PSI pressure relief valves were used. Mineral oil was used. There were never any problems.
If the inside height of...
