why did no one answer this qusetion
We can guess that the resistor is used for discharging the capacitor's plates. Generally we short the two terminals on a capacitor to discharge it fully. A resistor will take more time to do this than shorting-out the terminals: the higher the resistance, the longer the time that will be taken to discharge a capacitor fully.
To test an AC capacitor, you can use a multimeter set to the capacitance setting. Disconnect the capacitor from the circuit, discharge it, and then connect the multimeter leads to the capacitor terminals. The reading should be close to the labeled capacitance value. If the reading is significantly lower or higher, the capacitor may be faulty.
1. bec the capacitor not allow the current to pass through it after it has charged & it charged in no time ex:(10^-4 second). 2. because it is necessary to avoid wrong polarity by shorting the terminals of the capacitor and tripping the fuse.
To test an AC capacitor with a digital multimeter, set the multimeter to the capacitance setting. Disconnect the capacitor from the circuit and discharge it. Connect the multimeter leads to the capacitor terminals and read the capacitance value displayed on the multimeter screen. Compare this value to the rated capacitance of the capacitor to determine if it is functioning properly.
To test a start capacitor using a digital multimeter, set the multimeter to the capacitance measurement mode. Disconnect the capacitor from the circuit and discharge it. Connect the multimeter leads to the capacitor terminals and read the capacitance value displayed on the multimeter. Compare this value to the rated capacitance of the capacitor to determine if it is functioning properly.
A physical capacitor is made of two conducting plates arranged face-to-face, with vacuum or an insulating material between them. So the capacitor is actually an 'open' circuit ... there's no continuous conducting path through it, and if you connect it to the terminals of a battery, no current flows through it. It performs its job completely by means of the electrostatic forces of attraction or repulsion between charges on the two plates, but there's never actually any flow of electrons across the space between the plates. (If there is, then the 'dielectric' is punctured, and you need a new capacitor.)
Trimmer capacitors are used to calibrate (trim) the capacitance in a circuit. They are connected in parallel with some other capacitor, and the circuit is calibrated by observation of response to known stimuli. Since trimmer capacitors are often used in RF circuits, it is generally not possible to make measurement of the capacitors out of circuit because parasitic capacitance at RF is not negligible. Additional question received on April 6th: "I have a 3 terminal trim cap; 2 terminals read continuity, the other not. My question is how do I connect this in a circuit?" In all probability, the two terminals that read continuity are the same terminal, and are simply provided to give three point mechanical stability when soldered into a circuit. You would connect the two terminals that do not have continuity, using either of the terminals that do have continuity, across the capacitor that needed to be "trimmed".
how to connect power capacitor with 3 phase motor
The capacitor is used to create a second phase from the single phase power source and it is the interaction between these two phases that causes the motor to turn.
If the capacitor is charged then the battery will explode.
The terminals on a solid state relay are typically called input terminals and output terminals. The input terminals are used to connect the control signal that activates the relay, while the output terminals are used to connect the load that is being switched on or off by the relay.
To connect it to the circuit.