- tester, allowing the measurement of resistance in the range of 100-1000 ohm.
Tip 2: How to check a diode bridge
By building this circuitry is designed for converting a car from AC to DC.Diode bridge consists generally of six diodes mounted on the housing of the generator.This extension is called a full-wave in electrical engineering.
Depending on the operating conditions of the car diode bridge can fail sooner or later declared by the manufacturer term, but somehow all the details of wear.This most often happens when moisture gets into the generator (washing cars, crossing water obstacles), or in the winter time, when "Booster" from other car owners confuse inexperienced polarity of the wires.If the diode bridge fails, the vehicle battery does not get recharged, or, conversely, recharges, which leads to electrolyte boiling.
Check diode bridge yourself best with a test light (carry), or tester.For completeness, it is desirable to use the verification in two ways.First, connect to the negative terminal of the battery plate diode bridge (also minus), which is pressed against the body of the generator.Then connect one end of the carry to the positive terminal of the battery.Free end carrying touch a terminal with extra output diodes bolt positive terminal and the connection points of the stator winding.In all cases, the lamp shall not light.If it lights up, then punched a diode bridge.
The next step is to be verified independently on a diode bridge open.To do this, change the connection minus the diode bridge plate with the negative terminal of the battery to the plus, carrying one end is fixed to the "minus" battery and carrying free end plugs into the same points as before.In this case, the lamp should burn bright light.If it does not light up - at some of the findings there is a break in the chain of diode.
With the tester diode test is the following: exhibit mode "proring" semiconductors with 1k limit and start "prozvanivat" each diode.If the diode is good, the value is one way to be 400-800 ohms, and in another - infinity.Car owners who know how to handle a soldering iron and tweezers, can easily come into disrepair vypayat diode and replace it with a new one.All replacement surgery takes less than an hour.
- as switching bridges