![]() I won't use a 3 wire ('Grounded') outlet to prevent use of devices that rely on a 'Ground' to be safe.ĭO NOT plug anything with a transformer or sensitive electronics into these outlets! This is STRICTLY a 'Hot/Neutral' wiring system, there is no 'Ground', and metal case tools that need a 'Ground' (3 wire plug) should not be used in this application. (The less expensive ones with plastic cases) are almost all brush type motors and will run off AC from the average alternator Stator. Top in this image is the standard vehicle alternator in electrical schematic, along with the Rectifier Diodes that convert to DC current, you CAN connect to the AC directly from the Stator, and use that AC for certain things, like brush type motors (Most Hand Tools). Just parking some diagrams here for use in a while when I get time and find things Several alternator types have cases drilled straight through for rectifier mount screws, longer screws or bolts/nuts make for easy mounting of that second Rectifier. The screw just above the 'Test Tab' has an insulator collar around it, remove that collar and you can weld off this little guy! (Full Field - Full Time)īy adding as second Rectifier (outside the case back), and jumping AC taps to that second Rectifier, the little unit will last MUCH longer at full power output. 'Grounding Out' the 'Test Tab' to the case will force the alternator to go 'Full Field' and output at maximum. There are versions of this little, cheap, basic alternator will crank out 1,620 Watts from about any drive source. This is another version of the GM SI alternator back case.Įven though this is the ugliest, most dirty example I could find, it still produced 850 Watts like a champ! The mounting screw is the negative contact for the Capacitor, GM SI alternator are case Negative Polarity commonly, so keep that in mind when experimenting. This is the back case of another version of GM SI alternator, notice the diode trio and capacitor are not attached.īoth are there, but this version uses the canister type capacitor. With this version the Capacitor is attached to the right side. Some alternators won't have an internal regulator, some have external regulators, either in the wiring harness someplace, or on much newer models, the vehicle computer takes over the voltage regulator duties. The Diode Trio is a direct sample of Stator Output supplied to the Voltage Regulator, it's removed when you want to take control of production, taking the voltage regulator out of the system. This shows how the Diode Trio is attached, what it looks like in one version of these little alternators. The Rectifier is designed to handle the full current production from the Stator. This is a Rectifier Bridge & Heat Sink in a GM SI alternator.Īn actual picture, an explanation of what you are seeing, and a diagram of AC (Red & Black Connections) going into the Rectifier, and the Positive/Negative DC connections after AC goes through Diodes. ![]() What the Stator Windings actually look like, see below, the back half of an alternator case, look for copper wires in a metal frame just inside the case housing. In Electrical Schematic, this is what the Stator windings (left) and the Diode Rectifier (right) look like. While the magnetic field spins (North/South), and alternator has 3 sets of windings, spaced 120° apart, so you get 3 power output from one flip of the moving magnetic field.Ī Capacitor is used to smooth out the 'Ripple Effect', and the alternator puts out a fairly steady, useable form of DC. The magnetic field 'Induces' (Induction) an electrical current.Ī SPINNING in a coil of wire would produce first positive, then negative electrical current, as first the 'North Pole' of the magnet passed tough the winding, then the 'South Pole' passed through the winding, over and over again.Ī Diode is a one way 'Gate Valve' that's polarity sensitive.ĭiodes in pairs will separate the 'Positive' pulses, and the 'Negative' pulses into a useable form of Direct Current (DC). When a magnetic field (Magnetic 'Arc' Lines) pass through and electrical conductor (wires), I encourage EVERYONE that wants to understand how to generate a USABLE electric current, ![]() This shows connections from Stator (AC production) to Rectifier Diodes.ĭiodes 'Rectify' the AC into DC (Direct Current). The round circle with the 'Y' in the middle is the schematic for the STATOR, the loops of stationary wire inside a the alternator case. Schematics And Real World So You Can Identify Parts & What They Do. The GM Small 'SI' Series Alternators Are Everywhere & Cheap. Some Alternator Basics And Starting With The Most Common & Cheapest Alternator Out There,īut The Basics Apply To Every Alternator On The Market.
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