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What is the basic difference between a full wave bridge rectifier and a full wave center tapped rectifier?
A full-wave bridge rectifier with 4 diodes gives a dc output voltage equal to the average voltage of the whole transformer secondary. A FW rectifier with 2 diodes and a centre-tapped secondary gives an output voltage equal to the average voltage of half the secondary. If you have a 12-0-12 transformer, the bridge gives a 24 v output, while the 2-diode FW rectifier gives 12 v (approximately).
What are the parts of a full wave rectifier?
There are two basic types of full-wave rectifier. The older type consists of two rectifier diodes,(diodes). The two anodes are strapped together giving the +ve ouyput;the two cathodes are connected to opposite sides of the transformer secondary. This arrangement has the advantage of needing only two diodes, but the disadvantage of needing a centre-tapped secondary on the transformer which provides the -ve output. The newer type is a bridge rectifier. It consists of four diodes in a ring configuration. diode 1 has its anode connected to the +ve out and cathode to side a of transformer. diode 2 has its anode connected to the +ve out and cathode to side b of transformer. diode 3 has anode to side a and cathode to -ve out. diode 4 has anode to side b and cathode to -ve out. This arrangement has the advantage of not needing a centre tap on transformer secondary. The disadvantage of needing four diodes instead of two is moot nowadays because solid-state diodes are very low cost.
What is the need of 3 terminals in transformer?
You're talking about three terminals on the same winding, correct? This is called a "center tapped" transformer. There are three basic reasons to use one. The first is if you want only positive (or negative, depending on how you wire the rectifiers) voltage but only want two rectifier diodes in the power supply. (Why? Say you're designing a DC arc welder. The rectifier diodes for those cost $125 each, and it's cheaper to build a center-tapped transformer than to buy two more diodes.) The second is for a high-frequency switching power supply. The third is if you need both positive and negative voltage. You install a bridge rectifier on a CT transformer. Normally, a bridge rectifier treats the negative output as ground, so if you connect a 14-volt transformer to a bridge rectifier you will get, after accounting for loss in the diodes, about 12 volts off the positive output. Now connect the same bridge rectifier to a CT transformer, referencing both outputs to ground at the center tap, and you'll get positive 6v and negative 6v. There's not too many devices anymore that need negative voltage--the old Intel 8080 needed +5, -5 and +12--but if you need negative voltage for something, that's how you get it.
What is working principle and construction of bridge rectifier?
A full wave bridge rectifier converts AC (Alternating Current) into DC (Direct Current) with an AC component. To achieve DC only, the output of the bridge rectifier must have the AC component removed by bypassing it, usually with capacitors. It consists of 4 diodes in a bridge format. During one half of an AC cycle, two of the diodes conduct and on the other half a cycle the other two conduct. Diodes allow current to flow in one direction only. A diagram can be found at http://www.allaboutcircuits.com/vol_6/chpt_5/5.html
What are the basic components of wind tunnel?
Power sourceDiffuser Rectifier Contract duct
Why dont we get the transister action by connecting two diodes back to back?
Because two diodes is not a transistor. There is an interaction between the junctions in the transistor, because of their proximity, that you don't get in the two diodes. The only use of modeling a transistor as two diodes back to back is to test a transistor with a multimeter as a quick go-nogo test for basic operability.
Which material we need to show a 9 volt power supply?
Well it depends on several things, does it need to be AC or DC? how much amperage must it be able to supply? For a very basic power supply you could us: A Step-down transformer A bridge rectifier (4 diodes of sufficient voltage and amp rating) Two capacitors; one at 1000uF and one at 0.01uF A 9 Volt voltage regulator (LM7809 is good) Depending on transformer and rectifier, this'll deliver 9V at up to 1A
What is the best way to learn basic automotive repair?
At most community colleges, courses in basic automotive repair and maintenance are offered. These courses are very beneficial and will give you the knowledge you need to do upkeep on a vehicle.
What is the difference between an automotive technology class and an automotive class?
the difference is that auto class teaches the basic lessons of every part of an automotive perspective, while auto tech teaches specifics on circuitry, electric standards in an automotive perspective. auto is basic/overall info. Auto tech teaches basically what runs/ keeps automotives going.
Average yearly income automotive technician?
Basic Range from 20k - 100k+, average would have to be around 40-50k. Source - an Automotive Technician.
How do you know when a rectifier is bad?
(1) A basic check of a simple electrical rectifier (diode) requires the application of an ohm meter (an electrical resistance measurement device). A digital ohm meter (digital multimeter or DMM) is easier to use than the conventional dial (analog) type of meter. (2) The rectifier must be disconnected from the circuit to be assured of an effective test. (3) Measure the resistance of the rectifier from one terminal to the next. (4) Switch the meter test leads to measure the rectifier in the opposite direction. Do not to touch the electrical conducting parts of the meter leads or the terminals of the rectifier with your fingers or you may cause a false measurement. (5) Usually an effective rectifier has at least a 10 to 1 ratio of resistance as measured one direction versus the other.
How do you replace the alternator on a 1999 Chevy Blazer S-10 4wd?
the alternator will be located close to the top of the motor, you will need to loosen the tensioner pulley and remove the serpentine belt, disconnect the elictrical connections at the alternator and remove the alternator mounting bolts. then just lift the alternator out... as far as tools you will need a basic set of sockets and a screwdriver.
