how to control a steeper motor> i want to make circuit by myself so i need a circuit diagram?
150653
http://www.cs.uiowa.edu/~jones/step/circuits.html\n\nyou might consider buying the chips that do most of the hard part unless you are trying to learn how they work in which case that link is just perfect.
163822
If you r searching for electronic robot then try out this\nuse aluminium bar to design your robot\nuse stepper motor for its various moments.\nU need a electronic circuit to control it.\ncomponents :\nTransformer (9-0-9)\nDiode(IN4007)\nvoltage regulator ics(L7812C,L7815C)\nresistors(470E,1K,220ohms)\nNPN transistors(SL100,CL100)\nRelay(BS-114,HRS4H-s-DC12V)\nconsult ur local repairing shop for further guidance
1083129
1. Motor driven Van de Graaff Generator.\n\n2. High voltage multiplier - Jacob's Ladder.\n\n3. High voltage induction coil - Tesla Coil.\n\n4. Flyback Transformer.
807039
I agree with the first answer.  You need a relay.  These are available at any electronics shop and probably most auto shops.  The most accessible place to connect to the brake light circuit is the switch located at the brake pedal.  Relays are sufficiently common, I wonder how they would not be obvious to anyone that knows enough to build the rest of the circuit you describe.
312735
Try a damping circuit.
225971
Actually what you want to build is an electric *motor*, not an electric *engine*.  By definition, an engine has a number of working parts that move sychronously, whereas a motor is a simple moving machine (my English teacher nailed me on this back in the 12th grade and I've never forgotten it).\n\nBut nevermind all that semantics stuff.  See the link below for some excellent how-to examples, depending on how powerful a motor you want to make.\n\nHave fun!
949076
U need M.A. of lever or inclined plane or what? Please be specific.
1074782
You can check some CNC controllers here\nhttp://www.controlafzar.com/products_en/controller_page.htm
275517
- A DC brushless electromotor is mainly a step-motor with a rotor made out of permanent magnet, and a stator made out of coils (mostly 4 coils, but it depends on the type of step-motor). As this is a step-motor, it needs some kind of regulator, which is made on a little electronic board. So... a DC brushless motor is made out of 3 things: \n\n1 Electronic Circuit Board \n2 Coils \n3 Permanent Magnet \n\n- Electronic Circuit Board and Coils: \n\n- This part is doing the trick - rotating the permanent magnet. There are in most every case only 4 coils in a normal fan, grouped as 2+2. The first group (let's call them the North-South group) is connected to one electrical circuit on the electronic board. And the second - East-West - is connected to the other electrical circuit. \n\n- On the electronic circuit board is located one small device that is most responsible for this trick. It is called Hall-probe (or Hall-sonde), and its location is just under the permanent magnet. \n\n- It's used to detect the south pole of the permanent magnet. The Hall-probe regulates two different electric circuits driven by two transistors, and depending on the pole it detects, it drives the proper circuit. With this type of regulation, it is possible to create a rotating magnetic field, and rotate the permanent maget located around the coils. \n\n- A permanent magnet has two-poles - North and South. Let's look what happens when the fan is powered. \n\n- Depending on the location of the south pole, Hall-probe drives one of the circuits. So, let's say that Hall-probe is sensing the south pole. It drives one of the circuits (let's say north-south circuit). \n\n- When the north and south coils are powered, they produce the magnetic field. This field is of the same direction in both coils, but... :) the Magnet hasn't got the same direction of the magnetic field in both poles. It looks like one coil is pushing the north pole away, and on the other hand, the second coil is pulling the south pole to itself. \n\n- Now, when the magnet is moved, the south pole goes away from the Hall-probe, and as it isn't sensing it anymore, it drives the second transistor (second circuit). With that, east-west coils are turning on, doing the same job as north-south coils did before. \n\n- So, basically the trick was to produce the rotating magnetic field. And it was done very cleverly! :) As coils aren't made as a moving part, it is obvious that there are no brushes, so that's the part where the name came from - 'DC brushless'. \n\n- Permanent Magnet: \n\n- This is the mostly known part of the electromotor. I think that I don't need to explain much about it. It has two poles - north and south, and using the external magnetic field it is possible to move the magnet around. In a fan, the magnet is circuit-shaped and it rotatrd around its axis. \n-------------
728562
Here is a good article. To understand them, you need to get a multimeter, and electronics projects book, a breadboard (to mount circuits on), and a selection of electronic parts from Radio Shack. Use batteries initially, and then when you are more confident a power supply and rectifier to do experiments, and measure voltage, current, and resistance values around the circuit.\nhttp://en.wikipedia.org/wiki/Electronics\nHyperphysics. (Google)\nhttp://www.mathworld.wolfram.com\nhttp://www.refdesk.com\n"You can do it electronics," Needham Heights, MA\nEnjoy!
276460
Try Jass machine company:\nwww.jassmachco.com/nustep.htm\n                            Lyndell
823421
light duty is the problem - would be very easy to make one using any push on connector in the circuit ( you need a spring loaded connector with the pin being non conductive - a 'blade' shaped pin would be the easiest to rig )\n\nanother possibility is to use a switch of any type ( a - b ) that shunts the circuit to a open   circuit  ( this can be activated by a pull - and switched back manually )
860564
You didn't say what plc, servo, etc. but generally you get a servo control card for your PLC (sometimes called "axis module"), a servo amplifier, and a servo motor.\n\nYou place a desired position and some other parameters such as acceleration,deceleration in to registers in the PLC. The PLC card will then output a plus or minus 10 volt signal to the amplifier to move the motor. -10 volts is full speed reverse and +10 volts is full speed forward. +1 volt would be slow forward.  An encoder in the motor feeds back its position to the the servo card.\n\nThat's only one way. Several companies make stand-alone servo systems (intelligentactuator.com is one) that you either "teach" it a position or command a position and it does the rest.\n\nDepending on what you are doing, you project could be anywhere form easy to maddening.
1023698
You do not.  Get an AC to DC converter then run the motor.
797208
Not the easiest thing to explain via email but the best way to start is to understand clearly the function of the symbols shown in diagram. Once you understand what each item does find a starting point - usually the power supply and walk through it. ANother way is to get the corresponding termination diagram. I find them much easier to understand.
793994
If it has to be in steps and not a true ramp, I'd suggest you have your timing clock drive a constant-length pulse generator (sometimes called a "one-shot") which gates a constant-current source into a capacitor. (Higher current and shorter pulse length will make the resulting ramp steeper thus closer to a true step function.) The voltage across the cap will be a stepped approximation to a ramp. If you just need a smooth ramp, simply drive the capacitor with a constant current for the duration of the ramp. The constant current makes the ramp linear. The voltage change rate is I/C. If you don't need linearity you can use a voltage source with a series resistor. Whatever ramp quality you choose, if this is to be a repetitive waveform, you need another circuit such as a one-shot to discharge the cap at the waveform repetition rate. One way to do this is to trigger the reset when the ramp voltage reaches a preset value, or you can just time the pulses that trigger the one-shot. I'm not too up-to-date on chips, but the old 555 timer is versatile and easily adaptable to this kind of application.
994724
My freind Kyle knows how to do this. He had his own at one point.  But he isnt online right now. Im really sorry.. but if you keep this question open for a bit I can get back to you on this. \n\nHe just came online.. and im really sorry but he says it's very hard to explain! I really wish I could help though :(