Capacitor is indispensable almost in electronic circuit store can component, it has partition dc, connect the communication, character that prevents low frequency. Wide application is in coupling, in lying between the circuit such as changeover of wave of straight, bypass, filter, harmonious, energy and automata. Familiar capacitor is in the name meaning in different circuit, conduce to us understanding electronic circuit plan.

 

Capacitance of 1. filter wave: It is received in direct current source, between negative pole, exchange part except what do not need in direct current source with filter, make dc flowing. Often use high capacity commonly electroanalysis capacitor, the small size capacitance that also can be in in circuit in the meantime and receives other type divides high frequency alternating current with filter.

 

2. retreats Ou capacitance: Receive the power source at enlarge circuit, between negative pole, prevent the feedbacking and causes parasitism oscillation that forms by power source internal resistance.

 

3. bypass capacitance: Handing in, in the circuit of dc signal, receive capacitance in resistor two end or go up to communal potential by some bit of bond of circuit, install an access to communicate signal or pulse signal, avoid to because through resistor generation is pressed,exchange signal part fall damply.

 

4. coupling capacitance: In communicating signal to handle circuit, use at joining signal source and signal processing circuit perhaps make the connection between the class of two amplifier, in order to cuts off dc, let communicate signal or pulse signal to pass, make around class magnifies the dc job of circuit nods each other to be not affected.

 

5. harmonious capacitance: Join is in the oscillation coil of syntonic circuit two end, rise to choose the action of oscillation frequency.

 

6. gasket capacitance: With syntonic circuit advocate the auxiliary sex capacitance that capacitance establishs ties, adjust it to be able to make decrescent of limits of oscillation signal frequency, can increase the oscillation frequency that low frequency carries significantly. Appropriately the capacity of capacitance of gasket of make choice of, can lead low Duan Pin the curve to promote up, adjacent at ideal frequency curve of pursuit.

 

7. compensates capacitance: It is with syntonic circuit advocate the auxiliary sex capacitance of capacitance paralell connection, adjust this capacitance to be able to make limits of oscillation signal frequency expands.

 

8. counteracts capacitance: Receive the base in dynatron amplifier and blast off extremely between, form negative feedback network, in order to restrain dynatron extremely the self-oscillation that capacitance causes.

 

Capacitance of 9. firm frequency: In oscillating circuit, have the effect of stable oscillation frequency.

 

10. time capacitance: Establish ties with resistor R in circuit of RC time constant, collective decision fills the electric capacity of discharge time length.

 

11. quickens capacitance: Receive in oscillator feedback circuit, make process of make a present of of positive and negative is quickened, increase the scope of oscillation signal.

 

12. shortens capacitance: In circuit of UHF high frequency head, to shorten oscillation inductor length and act received electric capacity.

 

13. carat spills capacitance: In capacitance at 3 o’clock type in oscillating circuit, with the capacitance that inductance oscillation coil establishs ties, rise to remove the effect that transistor knot capacitance affects to frequency stability.

 

14. stannum pulls capacitance: In capacitance at 3 o’clock type in oscillating circuit, with inductance oscillation coil the capacitance with two shunt-wound end, rise to remove the effect of transistor knot capacitance, make the oscillator allows Yi Qizhen in high frequency end.

 

15. is firm a capacitance: In frequency discriminator, with the extent that outputs signal at stability.

 

16. accentuates beforehand capacitance: Bisect frequency quantity is caused to be mixed damply in handling a process to avoid frequency modulation signal missing, and the RC high frequency heft of the setting promotes a network capacitance.

 

17. goes accentuating capacitance: To restore former audio signal, the requirement accentuates beforehand to the classics in frequency signal the high frequency heft of a promotion and noise are dropped damply together, install the capacitance in RC network.

 

18. moves photograph capacitance: Use at the capacitance with change communication phasic signal.

 

19. turns over capacitance of make a present of: Between the bond input at amplifier and output end, make output signal to answer the capacitance that is defeated by input end.

 

Capacitance of 20. step-down current limliting: Series connection is in alternating current loop, use electric capacity characteristic to the capacitive reactance of alternating current, undertake current limliting to alternating current, form cent to press circuit thereby.

 

21. retrace capacitance: Use at line scanning to output circuit, receive be expert at the collector of efferent and blast off extremely between, in order to produce high-pressured line scanning pulse of toothed wave retrace, its compression is in commonly 1500V above.

 

22. school positive electricity allows: String receive in deflexion coil loop, the outspread linear that is used at brim of corrective picture tube is lack fidelity.

 

23. cites step up electric capacity oneself: Use capacitor fill, discharge store the potential that some nods circuit of can characteristic promotion, make potential achieves power supply to carry 2 times what voltage is worth this a little bit.

 

Capacitance of 24. disappear window: The setting is in in looking discharge way, use at involving the electric capacity that window of the remains on picture tube eliminates when machine.

 

25. is soft the capacitance that start: Receive the switch in switch power source to be in charge of base to go up commonly, prevent to be when open power source, too big surge electric current or exorbitant peak value voltage are added to switch canal base, bring about switch to provide damage.

 

26. starts capacitance: String receive the auxiliary winding in single-phase electromotor to go up, offer for electromotor start move alternating voltage. Disconnect with auxiliary winding after electromotor runs normally.

 

27. movement capacitance: With the auxiliary winding series connection of single-phase electromotor, offer for electromotor auxiliary winding move alternating current. When electromotor moves normally, maintain with auxiliary winding string receive.