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emc test are of various types. if you are looking at what is leaking out of a vehicle, then you need a metal shield room to make sure anything you measure on your spectrum analyze is indeed coming from the car. RF susceptibility testing, you often use the same metal chamber to protect the operator from the high electric fields leaking out at them
An application field where you often find liquid cooling is motor inverters for electric cars. I see it also in multiple 100 kW power inverters, but it's not necessarily.
Hello, I am trying to understand what this company ?Integral powertrain? does. I take it that they don?t actually make electric motors and electric drives for cars, but, they make ?add-on? systems, which involve additional electric motors and electric drives, which mean that the main (...)
Why would anybody want an electric car today? Even though gasoline price is mostly taxes it is cheap and there is enough available for the rest of my life and maybe for the life of my kids. My grandkids might be driving electric cars maybe 30 or 50 years from now. Diesel fuel is a stinking smoking joke on this side of the (...)
Let's take as example toyota prius. Very old and relible hybrid car. electric engines working as usual bldc motors during acceleration and in case of breaking voltages first goes to rectifier, than to boost converter and only than to battery. Main engine MG2 has 32kW power and secondary MG1 has 16kW. Based on sun gear they can work in parallel and
We can't find the regulations for level of PFC required above 1kw? Is an electric car battery charger considered as professional equipment? Otherwise EN 61000-3-2 (IEC 1000-3-2) class A harmonic current limits apply.
Hello, The company I work for want to have on-board, mains powered, 3.8kw electric chargers in their electric cars. The spec is 230VAC input, and 300-410VDC output. They only need 6 chargers for 6 cars. The number may rise to 100, but not likely any more than that. electric cars, as you (...)
You need to define your environment. If the car battery is inside a car then the automotive specs are quite stringent such as -24V to +48? and a high Joule load dump rating to simulate the large inductive load from the electric clutch in an ACU, which can be easily protected with an MOV disc. If the input voltage drops to 0V with low (...)
In an automobile car, one of the terminals of battery (usually negative terminal) is electrically connected to the chassis. I think electric golf cart is not an exception. If one of the battery pack terminals of the golf cart is properly connected to the chassis then no such noise should appear. Perhaps (...)
I am interesting to know about the automation systems (production line) and the machines that manufactures these products: solar cells, thin-film solar modules, display screens like: Liquid Crystal Display (LCD), touch panel and plasma, thin film rechargeable lithium ion batteries, lithium ion batteries for electric car, fuel cells and printe
hi, i am interested on hydraulic hybrid may replace battery.Initially i want to do a small R&D on hydraulic battery.i want to store 2.5KWH i need some help for calculation(tank size ,accumulator size,flow rate,hydra motor size,electric motor size etc). If possible one can help me? thx.
hello, we are designing an electric car, besides the chassis and motors, we are specifically working on the ECU(input of all the sensors) and the graphical display using a micro controller. thereby i reach out to you to give suggestions and guidelines to meet our objective.
The heart of the RC system is its servos. These are electric motors with a gear box and a crank or such like to provide mechanical movement, which is also linked to a pot to provide electrical feedback of the movement. So if you have some one capable of building one, get him to build at least three (steering, speed, gears)!! If it is beyond your ca
This is a construction of car ?electric windows?. Windows opening and closing electric system was applied and the window winders replaced with a new, original ones with motors. Due to the tightness, all drivers remained in place,
A car horn will usually be designed to operate best at around 14V or a bit more - that's what the alternator gives the electrical system when the engine is running. LiIon cells, although rated at 3.7V, actually give up to about 4.2V when freshly charged. That's why some LED flashlights will be instantly killed if they are only designed to run on
Most cars are equipped with overload protection in electric window elevators, causing switching off the motor when raising window encounters an obstacle, but it can be too late and our hand can hurt. Optical barrier
There are quite a few sites devoted to model aircraft and car engines. Here are two of my favorites: RC Universe features rc cars, rc airplanes, rc helicopters, rc electric planes, rc boats, radio control jets, rc discussion forums, rc classifieds and auctions. RCGr
In an electric car built by a friend of mine, he used a shunt resistance. It was a plain copper bar, about 10 cm long by 5 cm wide and 1cm high. So we used a 24bit ADC, with two ports: one on one end and the other at the other end of the bar. Then you just calculate the voltage drop. Easy and cheap.
i want a circuit for herein when i turn on the SW ,the relay activated after seconds but because of low impedance of relay(160 ohms), this circuit did not work my question is: how i can solve this problem?
Hi guys I am building an electric go kart and need some advice on its mechanical design. Just check my maths please, if I have a 85kg kart + 85 kg driver (170kg), and I want to accelerate to 6.94m/s in 2seconds this is the power I need... Kinetic energy= 0.5*170kg*(6.94m/s)^2= 4kJ Then the power is 4kJ/2sec = 2KW (mechanical) Now how m
Hi Guyz... I was recently trying to built a Remote Control High Speed Toy car... I have completed with Software Coding for the Joystick Control & PWM... Now Im Stuck with the motor part...Which motor should i use to get a good speed for the car near about 50-100kmph... I have seen videos on youtube about electric toy (...)
Try to specify your user requirement for example : Demonstrate how to generate a force of 0.25 N for 10 seconds using an electric arc. Now design a system using the appropriate technology
hello I like know about hybrid car control systems and about electronic blocks that I must design. in this control you should have a complete control on electric DC engine and mechanic engine and LI-PO buttery in car, now I want to know that what is control blocks and what should I do? best regards.
Hi. Can anyone recommend a good introductory book to this topic. I'm trying to enter the field of electric car mechanics and I've been advise to get with this topic. Thanks a lot.
Hi, I am looking to build a small electric car for the kids and am interested in finding out what components I would require, I am looking for a list of the type of items I should be researching further. I am thinking of building a 24v system, using something like old mobility scooter motors (one motor on each of the rear wheels). I was also th
I want to calculate the induced electric field (and current) in a human body subjected to extremely low frequency (50~60Hz) magnetic fields form high voltage (500 or 220 KV) transmission towers. I've managed to determine the values of magnetic flux density throughout the human body height and depth in different positions in the proximity of the
Alternator power rating of modern cars is about 500 up to 2000 W. Also "old cars" usually had electric headlights, involving already 100 W power.
We have to refer to your original post to guess, what you are meaning with "connect an electric socket to a car battery". It's apparently about using an inverter to supply 110V AC devices. The problem isn't the particularly the socket. Just look around at edaboard, you possibly find a n
Hello, Is it true that electric cars with wheel-motors (ie motor in each wheel) are destined to failure because they will break when the car goes over bumps?
induction heating car battery a resistor made from an old electric fire spring wire flap over a few times i use the same method to make a dummy load for audio p.a work {fold till its 8R or 4R but i think you can use a crock clip to adjust it and put it somewhere safe like back in its glass tube } and two contacts made from the shape needed for
Need a NiCd/NiMH/Lithium Polymer battery charger and equalizer for three Lipo cell used in a electric Fly. May be with or without a microprocessor or ASIC. Charger current 5A. BTW This charger will be used in the field powered by a 13,8V x 160W car's power plug (old cigar lighter)! Regards, Fernando
I need help with a problem im trying to fix. I have an fuel injector signal from the ecu on my car 0-12volts i think or its 0-5. The voltage changes from 0-??? but its always a negitve signal. I need to basically make an electronic relay. it will need to be capable of switching up to about 150 times a second and i believe be able to carry up to
Well you can do something about solar power, as an installation o the circuit to transform the DC solar electricity into AC normal electricity, here in Spain is so popular, becouse there is a law that impulse it use. Maybe in other places there are similar laws.
Well, I really dont get the first one... but I had an idea in my mind along time ago, how about an electric motor load controller... The Idea is to control motors (eg. 8 motors in parallel) then you can programme it to you desired loading conditions and some motors will automatically shut if overload occurs got it?
A fuel cell is basically an electrochemical energy conversion device... It converts the chemicals i.e. hydrogen and oxygen into water by chemically combining them...and in the process it produces electricity This electricity is used to drive electric motors which in turn drive the car... More details on this link...