The role and name of the capacitor
It`s short for Daily chemical industrial products, refers to people in their daily life of the chemical products needed in the industry.Based on some chemicals and natural products as raw materials,after processing and manufacturing of chemicals commonly used in the industrial sector. General chemicals have immobilized chemical properties and physical and chemical properties. Natural products from animals and plants or minerals, the composition is more complex, usually can not directly meet the requirements of people's daily lives, and must be combined with other chemicals or natural products, after processing, can become a specific function of daily chemical Product.
Capacitor is an energy storage component with the characteristics of “straight through and low frequencyâ€. In order to recognize and separate different capacitors, people give them many names according to their role in the line. Understand these names and functions, Reading the picture is very helpful. The meaning of some common names is described below. ******
1 filter capacitor
It is connected between the positive and negative poles of the circuit to remove the useless alternating current in the circuit. Generally, large-capacity electrolytic vessels are used, and other fixed capacitors are also used.
2 decoupling capacitor
It is connected between the positive and negative terminals of the circuit to prevent parasitic oscillation caused by the positive feedback path formed by the internal resistance of the power supply.
3 bypass capacitor
Connect a path between the two ends of the resistor or a point directly connected to the AC or pulsation signal in which the common potential is an AC/DC signal to avoid a voltage drop when passing through the resistor.
4 coupling capacitor
It is connected between the signal source and the signal processing or two-stage amplifier to block the DC power and let the AC or pulse signal pass, so that the DC operating points of adjacent amplifiers do not affect each other.
5 neutralization capacitor
It is connected between the base of the triode and the collector to overcome the self-oscillation caused by the inter-electrode capacitance of the triode.
6 tank capacitance (tuning capacitor)
A capacitor connected across the resonant circuit or the coil of the oscillating circuit.
7 padding capacitor
The frequency range of the oscillating signal can be reduced in the capacitor. Moreover, the capacitor which can significantly increase the oscillation frequency of the low frequency end is connected in series with the main capacitor of the tank.
8 compensation capacitor
In the oscillating circuit, a capacitor that can widen the frequency range of the oscillating signal, which is auxiliary in parallel with the main capacitor.
9 reverse capacitance
It is connected between the output collector and the emitter of the row to generate a capacitance for the line scan sawtooth backlash.
10 bootstrap long-voltage capacitor
Use its energy storage to boost the potential of a point in the circuit so that its potential is higher than the supply voltage that supplies the point.
11"S" correction capacitor
It is connected in series with the coil loop to correct the distortion of the two sides.
12 frequency stabilization capacitor
In an oscillating circuit, a capacitor used to stabilize the oscillation frequency.
13 timing capacitor
In the RC timing circuit, the resistor R is connected in series to determine the capacitance of the length of time.
14 step-down current limiting capacitor
It is connected in series with the AC circuit to divide and limit the capacitive reactance of the AC.
15 shortened capacitance
This type of capacitor is a capacitor that is connected in series in the UHF tuner to shorten the length of the oscillating inductor.
16g connection capacitor
In the three-point oscillating circuit of the capacitor, the capacitance of the oscillating inductor coil is connected, and the frequency stability is improved in order to eliminate the influence of the junction capacitance of the transistor.
17 Thira Capacitor
In the three-point oscillating circuit of the capacitor, it is connected to both ends of the oscillating inductor coil. In order to eliminate the influence of the crystal junction capacitance, the higher the oscillation frequency, the easier it is to start.
18 acceleration capacitor
Connected to the oscillator feedback circuit to accelerate the positive feedback process and increase the amplitude of the oscillation.
19 pre-emphasis capacitor
In order to prevent the audio modulation signal from being attenuated or lost during the manufacturing process, the capacitance in the RC network of the high frequency component is appropriately increased.
20 to increase the capacitance
The portion of the high frequency component of the audio signal that is boosted by the pre-emphasis is attenuated along with the noise, restoring the capacitance in the RC network of the original appearance of the audio signal.
21 stable capacitance
In the discriminator, it is used to stabilize the output signal amplitude.
22 light point capacitance
In the picture tube attached circuit, the capacitor used to eliminate the bright spot of the shutdown.
23 phase shift capacitor
The capacitor used to change the phase of the AC signal.
24 feedback capacitor
A capacitor that is used to feed back the signal at the input and output of the amplifier.
25 soft start capacitor
Usually connected to the base of the power switch to prevent the surge current or voltage applied to the base of the switch during startup and damage the switch tube.
26 start capacitor
It is connected in series with the auxiliary winding of the single motor to provide phase-shifting AC for starting the secondary winding of the motor. When the motor is running normally, it is disconnected from the secondary winding.
27 running capacitor
Connected in series with the single-phase motor secondary winding. The phase-shift AC current is supplied to the secondary winding of the motor, and the secondary winding is still in the circuit when the motor is running normally.
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