Views: 6 Author: Site Editor Publish Time: 2021-03-17 Origin: Site
Patch capacitors are classified with other capacitors, and patch capacitors are also known as multi-layer (layer, laminate) chip ceramic capacitors, also known as patch capacitors, sheet capacitors. Patch capacitors are divided into: NPO capacitors, X7R capacitors, Z5U capacitors, Y5V capacitors, patch capacitors using simple packaging due to small size can save a lot of resources, but the package difficulty is higher than other capacitors. Let's take a look at what other capacitors are and what they do.
Capacitor classification:
1. Aluminum electrolytic capacitor, capacitive capacity range of 0.1uF-22000uF, high pulsation current, long life, large capacity of the choice, widely used in power filtering, de-lying and other occasions.
2. Film capacitor, capacitor maximum range of 0.1pF-10uF, with small tolerances, high capacity stability and very low voltage effect, so it is X, Y safety capacitor, EMI/EMC of choice.
3. Tantalum capacitor, capacitor capacity range of 2.2uF-560uF, low equivalent series resistance (ESR), low equivalent series inductor (ESL). Pulsation absorption, transient response and noise suppression are superior to aluminum electrolytic capacitors and are ideal for highly stable power supplies.
4. Teramic capacitor, capacitor capacity range of 0. SpF-100uF, the crystallization of unique materials and film technology, caters to today's "lighter, thinner and more energy efficient" design concept.
5. Super capacitor, capacitor capacity range of 0.022F-70F, very high tolerance, so also known as "gold capacitor" or "Farah capacitor." The main features are: ultra-high capacity, good charge/discharge characteristics, suitable for power storage and power backup. The disadvantage is low pressure resistance and a narrow operating temperature range.
The role of capacitors:
Coupling: A capacitor used in a coupling circuit is called a coupling capacitor, which is used extensively in capacitive coupling amplifiers and other capacitive circuits to act as a straight-flow AC. Filtering: A capacitor used in a filter circuit is called a filter capacitor, which is used in power filtering and various filter circuits to remove signals from a certain frequency band from the total signal.
Regression: Capacitors used in the regression circuit are called decoupling capacitors, which are used in the DC voltage supply circuit of multistation amplifiers, and the regression capacitor surges away the harmful low interconnecation between each stage amplifier.
High-frequency vibrationation: Capacitors used in high-frequency vibration circuits are called high-frequency vibration-eliminating capacitors, and in audio negative feedback amplifiers, this capacitive circuit is used to eliminate the high-frequency whistling that may occur in amplifiers in order to vigrate potentially high-frequency self-exciting.
Resonance: Capacitors used in LC resonant circuits are called resonant capacitors, which are required in both LC-in-line and series resonant circuits.
Bypass: Capacitors used in bypass circuits are called bypass capacitors, and if a signal from a certain frequency band needs to be removed from the signal, a bypass capacitor circuit can be used, depending on the frequency of the removed signal, with a full frequency domain (all AC signals) bypass capacitor circuit and a high frequency bypass capacitor circuit.
To median: Capacitors used in a median circuit are called median capacitors. In radio high-frequency and mid-frequency amplifiers, television high-frequency amplifiers, this medium-range capacitive circuit is used to eliminate self-exciting.
Timed: Capacitors used in a timed circuit are called timed capacitors. The capacitor functions as a control time constant size by using a time-controlled circuit that needs to be charged and discharged by capacitor.
Integral: Capacitors used in the integration circuit are called integral capacitors. In the synchronous separation circuit of potential field scanning, this integral capacitor circuit can be used to remove the field synchronization signal from the field composite synchronous signal.
Split: Capacitors used in a split circuit are called split capacitors. In order to obtain the spire trigger signal in the trigger circuit, this kind of split capacitor circuit is used to obtain the spire pulse trigger signal from various types (mainly rectangular pulses).
Compensation: Capacitors used in compensation circuits are called compensation capacitors, and in the bass compensation circuit of the card base, this low-frequency compensation capacitor circuit is used to enhance the low-frequency signal in the discharge signal, in addition to the high-frequency compensation capacitor circuit.
Self-lifting: Capacitors used in self-lifting circuits are called self-lift capacitors, and the commonly used OTL power amplifier output stage circuit uses this self-lift capacitor circuit to raise the positive half-week amplitude of the signal in a small amount through positive feedback.
Split frequency: Capacitors in the split frequency circuit are called split frequency capacitors, in the speaker split frequency circuit of the speaker, the use of the split frequency capacitor circuit, so that high-frequency speakers work in the high frequency band, medium-frequency speakers work in the medium frequency band, low-frequency speakers work in the low frequency band.
Load capacitor: An effective external capacitor that determines the frequency of load resonance together with a quartz crystal resonator. Standard values commonly used for load capacitors are 16pF, 20pF, 30pF, 50pF and 100pF. The load capacitor can be adjusted according to the specific situation, and the frequency of the resonator can generally be adjusted to the symmetrical value by adjusting.
The patch capacitors shared today are classified with other capacitors, and capacitors, as the name suggests, are 'capacitors', a device that holds charges. Capacitors are one of the most widely used electronic components in electronic devices and are widely used in circuits such as straight-through, coupling, bypass, filtering, tuning circuit, energy conversion, control, etc. The advantage of patch capacitors for other capacitors is that they are small and temperature-resistant, and their capacity is not low, which is why they are used extensively.
