Question about 2008 Beta RR 400

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General electronics Can someone explain silicon rectifiers and pointless regulators to me? I'm having some electrical problems and these are the two things that I don't understand in my harness. What do they do

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And what wouldn't work if one or the other went bad? Right now when I turn the key from OFF to ACCESSORIES the headlight will come on and the starter will run when pressed (the bike won't start though) but when I switch the key to IGNITION everything goes dead. The switch is new so it's probably not that. I'm not an electrical system expert but this guy's page has helped me many times. He discusses rectifiers about a third of the way down... but you'll probably learn a lot by reading the whole page and eventually the whole site. He has really good info about most aspects of MC repair.,,

Posted on Nov 10, 2008


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Explain the difference between static electricity and current electricity

Static electricity...

Generally considered a nuisance... can cause serious damage to electronic equipment... (it is STORED power)

Thunder & lightening are STATIC electricity...

Wiki definition included (below)

For commercially available ELECTRICITY...
(usa) "currents" ... All electricity functions because of a DIFFERENCE in potential. When you start adding wires then you are harnessing that potential DIFFERENCE into usable energy.

Direct current & Alternating current... Generally referred to as "AC" & "DC"

Most all of the power grid you are looking at on power poles around your community... have "AC" flowing on the power wires
good for powering residential housing and commercial power applications

Immediately below those wires ... The phone wires
have to run about 10 feet below the "AC" wires...
Phone systems run on "DC" because it is quiet
(communications systems).

Alternating CURRENT can be rectified into Direct...
and Direct CURRENT can be inverted into Alternating.

solar panels & BATTERIES output DC
Which can be accumulated and stored.

output AC... and because AC is less susceptible to magnetic interference... it can travel great distances with very little loss.

Very interesting topic for further research ... and the principals of both... as argued by no less than Nicola Tesla & Thomas Edison.

Hope this helps

Static electricity

Carnac the Magnificent

Apr 10, 2017 | Televison & Video


Silicon (Part 1)

Silicon is the base material in a great deal of computing equipment. It has been used extensively for decades and is a material that Engineers and Scientists understand well and can easily manipulate. Advances in this manipulation has led to both increased speed and reduced size of complex computing equipment. In this article, I'll explain how silicon is used in computers and in the next couple of articles I'll talk about some potential replacements for silicon and the benefits and drawbacks of each of them.
In computer chips and transistors silicon is known as a semi-conductor. But silicon by itself is not a semi-conductor; in fact it's an insulator. This is due to the chemical structure of the element Silicon. Silicon has 4 valence electrons (outer electrons that can participate in the forming of bonds with other atoms), this allows silicon atoms to form strong covalent bonds with other silicon atoms with no free electrons as a result of the bond. This means that when electricity is applied to silicon there is no way for it to travel through the material, because there are no free electrons.
A covalent bond is a special chemical bond between atoms formed when the atoms share one or more outer electrons.
So how can silicon be used as a conductor? Silicon can become a semi-conductor through a process known as doping. There are two kinds of doping used. The first kind is referred to as N-type. In this type of doping either phosphorous or arsenic is added in very small quantities to the silicon. Both phosphorous and arsenic have 5 outer electrons so when they form covalent bonds with silicon atoms there becomes a free electron. Even a small amount of phosphorous or arsenic can produce enough free electrons for silicon to become a semi-conductor. These free electrons will give the doped silicon a negative charge; that's why this type of doping is called N-type.
Another type of doping is called P-Type. In this type of doping either boron or gallium is used to bond with silicon. The difference with this type of doping is that boron and gallium each have three outer electrons. So, when the covalent bonds are formed with silicon atoms there is a 'hole' that is formed. This absence of an electron gives the effect of a positive charge (hence the 'P-type' name) which is really the opposite of the N-type doped silicon.
By themselves these doped silicon semiconductors are not that special. However, when we put them together interesting things can happen. In figure 1, there is a P-type silicon block next to an N-type silicon block. At first glance this might look a little weird. We have what looks very much like positive and negative charges next to each other - wouldn't the electrons travel to the positive side to balance out the charges?

Figure 1: P-type and N-type silicon forming a diode
No. The electrons of the N-type silicon will not travel to the P-type silicon to balance out the charges. This is because of the band gap. By itself the amount of charge is not high enough to encourage mobility of the electrons. This band gap allows us to do some amazing things with the doped silicon.
If we put N-type silicon next to P-type silicone and combine them with a power source we can make a diode. A diode is a basic electronic device that allows electricity to flow in only one direction - the direction that supplies energy greater than the band gap of the doped silicon. Figure 2 shows the P-type and N-type silicon together in a circuit with a power source. When the power source is in the right direction electricity will flow through the diode, when it is in the wrong direction electricity will not flow.

Figure 2: a diode connected to a power source
It's worth noting here that if the power source is large enough, then the diode will fail and electricity will flow in either direction. This is because there is also a band gap in the opposite direction, while it requires a much greater amount of energy to surpass the band gap, it is not infinite.
Diodes are a very simple, yet highly valuable and often used electronic component. However, one of the most important electronic components made with silicon is the transistor. To make a transistor with doped silicon we can combine the doped silicon into a sandwich of sorts. These types of transistors are called "Junction Transistors", and there are two kinds of these junction transistors. There is an NPN kind which has P-type silicon sandwiched between two N-type silicon pieces. There is also the PNP type of junction transistor which has N-type silicon sandwiched between two P-type silicon pieces. These two types of junction transistors are basically the same except that they operate with the reverse polarity of the other.
So to consider how this works, let's just examine the NPN type junction transistor. If you remember when I was explaining the diodes you might think that this looks like two diodes back to back which would stop electricity from flowing in either direction - you'd be right. However, if we apply a small electrical current to the middle P-type silicon (often referred to as the 'base') we can allow current to flow from one N-type silicon (often referred to as the 'collector') to the other N-type silicon (often referred to as the 'emitter'). Likewise if we remove the electrical current from the base the current from collector to emitter will stop. This type of action allows us to use this junction transistor as a simple switch. It is simple switches like this that we can combine together to form more complex logical gates.
Figure 3: a diagram of an NPN junction transistor
Another type of transistor we can make with doped silicon is called a Field Effect Transistor or a FET. There are a couple of subtypes of FET transistors, but they each work basically the same way. In a FET transistor only two types of doped silicon are used, and N-type and a P-type. This type of transistor takes advantage of the magnetic field created along with any current. Basically a FET transistor will allow electricity to flow through one type of silicon which is used as the channel. When electricity is applied to the other type of silicon a magnetic field is produced which interferes with the current flowing through the channel thus significantly reducing it. By utilizing this magnetic field effect we can use the FET as a switch in much the same way as I explained we could use the junction transistor as a switch.
So that's a simplified explanation of how silicone is used in electronic components, including computer chips and processors of all sorts. You can see how improving the electrical performance characteristics and decreasing the size of these components can have dramatic effects on the performance and size of the finished computer parts. However, as you reduce the size of silicone enough the physical properties start to change, making it more difficult to achieve the desired results. In my next article I'll discuss this along with some alternatives to silicon that are currently being explored.

on Jun 09, 2011 | Computers & Internet

1 Answer

What is the rectifier for the scag zero turn riding mower

You did not post what model this is on. However this is most likely the voltage regulator on the engine. The Scag brand has numerous issues with this item and electrical problems in general. I would contact SCAG about it.

Oct 21, 2016 | Garden

2 Answers

I need a rectifier or avr for generac 3500 xl genarator

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  • Jun 28, 2016 | Generac Electrical Supplies

    1 Answer

    1993 Vmax. Why is regulator/rectifier overheating?

    You are not going to like this answer but here goes. All Motorcycles, mopeds, scooters, quads, etc, that have have a stator to regulator/rectifier to battery generating system all have the same design flaw. They all have lousey electrical connectors. Heres what happens: the stator produces 204-220 volt ac current. The same thing that will run an electric dryer in your home. It's a lot of power. That power gets changed to dc current by the recifier and converted into about 15 volts by the regulator in the same unit. That's a lot of heat energy. If at any time the electrical connections become compromised by vibration, oxidation, dampness, salt, or will see the wires fry. It's an over load...not a short. Power sports shops are well aware of this and are happy to charge you list price to replace the entire system for several hundred dollars. Usually between $800-$1000. You can get after market sets of the component parts and do it yourself and that's the only way I know of to avoid the cost & it still ain't cheap. Many moto-X riders replace the connectors with automotive plugs that seal out water, dust, etc with a recessed plug with a silicon gasket and seal it with dielectric grease to prevent oxidation. Like the plugs on a car's O2 sensors. Hope this has been helpful, Sorry to be the bearer of bad news.

    Jul 31, 2015 | Yamaha Motorcycles

    1 Answer

    1999 Kawasaki KLX 300 lights not working

    Hi, Xim1645 a regulator-rectifier on a motorcycle converts alternating current to direct current. The reason you need one on a bike is that the bike is equipped with an alternator, which is just a device that takes power (in the form of rotation) from the engine and converts it into alternating current (AC). Think of the alternator as a type of generator. Now AC is a fine source of power for lights, but you can't feed AC into a battery or into a fuel injection computer and expect it to work.
    The rectifier's job is to convert this AC power into Direct Current power so it can be used to charge the bike's battery and otherwise power all the 12 volts (DC) devices on your bike (electronics, tachometer, etc.) It's worth mentioning that generally a rectifier is combined with a voltage regulator, which makes sure the alternator doesn't generate too much (or too little) power/voltage. If your alternator were to generate too much voltage you'd risk overcharging the battery, burning out your bike's electronics, etc. And if it generated too little your battery would slowly drain (this is the most common failure in a voltage regulator) I bring this up because on most bikes they tend to combine these two functions into a single rectifier/regulator. It is also worth mentioning that all rectifier/voltage regulator must be physically or electronically (by wire) grounded in order to function properly.
    For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
    Kawasaki KLX300R service manual repair 1997 2005 KLX300 Download Manuals... $15
    OEM Parts for Kawasaki
    1999 Kawasaki KLX300R Owner Manual
    Kawasaki KLX 300R

    Jan 03, 2018 | 1998 kawasaki KLX 300

    1 Answer

    What is the function of rectifier? And how will I know if it is broken already

    The rectifier convers AC current to DC current by blocking the wrong polarity of charge from the altenator allowing the correct polarity charge to enter the battery and run the electrical stuff on your bike. If the rectifier or Diode Pack fails, you will not be able to charge your battery and if it is short circuit will flatten the battery very quickly. There should be some form of regulator after the rectifier that stops the battery from being over charged.
    Hope this explains it for you.

    Dec 31, 2010 | Sym Husky 125 Motorcycles

    1 Answer

    The battery will not stay charged and the regulator rectifier get hot after running the bike for a short period of time. bike runs but not well when you disconnect the negative battery cable

    sounds like the regulator/rectifier has failed. you need to check that you are getting 13.5 14.8 volts at the battery when bike is running, higher means failed unit and under means same. you need a diode tester to measure reg/rectifier and will also need to check stator output with multi meter on AC, should get 60-100 volts when bike revved with stator wire unplugged from regulator.
    best solution is to take to your local shop and get them to perform these and other tests to confirm as electrical parts are generally not returnable once purchased as very easy to damage if put into a bike with other charging system faults

    Aug 31, 2010 | kawasaki ZX-6R Motorcycles

    1 Answer

    Replace regulator/rectifier with a different brand?

    Not always necessary to change the regulator/rectifier. Check all connections to make sure they are clean, use a good contact cleaner and finish off with dielectric grease on your electrical connections.
    When some bikes get a few years on them the connections get dirty. Check to see if there are any burned or discolored wires anywhere around the regulator. The FIX on some bikes is to cut the connector completely out and solder the wires together and either seal them with heat shrink of a good electrical tape. Loose or bad connections get hot. As long as the regulator and rectifier are working there is no need to replace them if the connections are good.
    Ride Safely, Ed

    Apr 08, 2010 | 2005 Kymco Zing 125

    1 Answer

    General electric


    Initially the only easy user action possible is to check/clean the battery contacts/terminals.

    If still a no go, you need to check for any loose or open wiring from the battery compartment to the PCB. That would mean opening the unit and having a look & see inside. You need to be familiar with electronic components and circuitry, DVM and possibly a soldering iron. You need to look/check the power switch, voltage regulator, reverse protection diode, zener diode, fuse/fusiblelink-resistor, open foil/trace and any other components associated with the power supply/regulation.

    If this does not solve the problem, your best bet would then be to seek the assistance of a qualified communications technician.

    Hope this be of help/idea. Pls post back how things worked out or should you need additional information.

    Good luck and kind regards.

    Dec 23, 2007 | Radio Communications

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