2013 MOTORCYCE ELECTRICAL COMPONENT: CAPACITOR/CONDENSER

MOTORCYCE ELECTRICAL COMPONENT: CAPACITOR/CONDENSER

In the last post for the article, the writer describes a component unit of the motorcycle electrical capacitor, which serves as a temporary storage and flow of ordinary capacitors are placed on the ignition system on the vehicle, now for more details please refer to the following article.

The capacitor is an electrical component that can store electrical energy in a given period of time . It is said in a certain period as though the capacitor filled a number of electric charge , the charge will run out after a while , depending on the amount of capacity capacitors . The amount of capacity is measured in units of Farad capacitor . In practice this size is too large , so that use smaller units such as microfarad ( μF ) or picofarads nanofarad .Capacitors have two types:a. polar capacitorIn polar capacitor , the determination of the existence of poles of the capacitor if you want to be associated with a series , and only work on DC voltage . Polar capacitor has a relatively large capacityb . Non-polar capacitorIn non - polar capacitors have no polarity so it can be mounted in an inverted position on the circuit, and can be connected to the AC voltage . Kebanyak non-polar capacitor size is relatively small , with unit nanofarad and picofarad.

Figure 1. Capacitor

Figure 2. Capacitor Simbols

The capacitor has a maximum working voltage indicated on the label in housingnya . Voltage electrical circuit connected to the capacitor must not exceed the maximum working voltage of the capacitor is concerned , as it will cause permanent damage ( even in some cases , an explosion ). Maximum working voltage range : 10V , 25V , 35V , 50V , 100V and 250V for polar capacitor to 750V for non - polar capacitor . There are two practical provision of capacitors , namely : 1 ) an empty load capacitor acts as if the conductor ( Conductor ) , and 2 ) the full capacitor charge bertndak as if the insulator ( insulator ) .
Examples of Applications Capacitors on MotorcyclesApplication / use of capacitors on motorcycle electrical systems can be found in a series of conventional ignition system ( using platinum ) , and ignition CDI ( Capacitor Discharge Ignition ) with CDI either DC current ( unidirectional ) or CDI with AC current ( alternating ) . Figure 3.21 below shows the application of capacitors on AC current CDI ignition system :

Figure 3. Aplication Condenser on Motorcycle

Based on the picture above, the capacitor in the CDI unit works as the current store (100 to 400 V) of the magnet that has been in the first searahkan by the diode when the SCR (Silicone Control Rectifier) is not active. After the SCR gate G given signal flow for the ignition process, the SCR will be active and the conductance of the anode (A) to the cathode (K). With the functioning of the SCR, causing the capacitor current release (discharge) quickly. Then current flows to the primary coil (primary coil) ignition coil for generates a voltage of 100 to 400 volts as the voltage induction itself.
Due to self-induction of the primary coil, then an induction in the secondary coil with a voltage of 15 KV to 20 KV. The high voltage is then flowed into the spark plug spark in the form that will be used to burn the fuel and air mixture in the combustion chamber.