Capacitors are almost indispensable energy storage components in electronic circuits. They have the characteristics of isolating DC, Connecting AC, and blocking low frequency. It is widely used in coupling, isolation, bypass, filtering, tuning, energy conversion, automatic control, and other circuits. Familiarity with the name and meaning of capacitors in different circuits helps us understand the electronic circuit diagram.
1. The filter capacitor is connected between the positive and negative ends of the DC power supply to filter out unnecessary AC components in the DC power supply, so that the DC power is smooth. Large-capacity electrolytic capacitors are usually used, and other types of small-capacity capacitors can be connected in the circuit at the same time to filter out high-frequency AC.
2. the decoupling capacitor is connected between the positive and negative power supply of the amplifier circuit to prevent parasitic Oscillation Caused by positive feedback formed by the internal resistance of the power supply.
3. in the AC and DC signal circuits, the bypass capacitor connects the capacitor to either end of the resistor or from a point of the circuit to the public potential, and sets a channel for the AC signal or pulse signal, avoid voltage drop Attenuation Caused by the resistance of the AC signal.
4. in the AC signal processing circuit, the coupling station capacitor is used to connect the signal source and the signal processing circuit or to connect the two amplifiers in a stage to cut off the DC and let the AC signal or pulse signal pass through, so that the front and back-level amplifier circuit's DC work point does not affect each other.
5. The tuned capacitor is connected to both ends of the resonant circuit's oscillating coil to select the oscillating frequency.
6. The auxiliary capacitance of the pad capacitor and the main capacitor of the resonant circuit are connected in series. Adjusting this can reduce the frequency range of the oscillating signal and significantly increase the oscillation frequency of the low-frequency end. Appropriately select the capacity of the pad capacitor to increase the low-end frequency curve up, close to the ideal frequency tracking curve.
7. The compensated capacitor is an auxiliary capacitor in parallel with the main capacitor of the resonant circuit. Adjusting this capacitor can increase the frequency range of the oscillating signal.
8. The neutralization capacitor is connected to the base pole of the transistor amplifier and the transmitting pole to form a negative feedback network to suppress the self-oscillation caused by the capacitance between the transistor poles.
9. The steady-Frequency Capacitor acts as a stable oscillating frequency in the oscillating circuit.
10. The timing capacitor is connected in series with the resistor R in the RC time constant circuit to jointly determine the charge-discharge duration.
11. The acceleration capacitor is connected to the oscillator feedback circuit to accelerate the positive feedback process and increase the amplitude of the oscillating signal.
12. The capacitor that is connected in series to shorten the length of the oscillating Inductor in the ultra-high frequency head circuit.
13. In a three-point capacitive oscillator circuit, the capacitor in series with the inductor oscillator coil can eliminate the effect of transistor junction capacitance on frequency stability.
14. In a three-point capacitive oscillator circuit, the tin-drawn capacitor is connected in parallel with the two ends of the inductor oscillator coil to eliminate the effect of the transistor junction capacitance, so that the oscillator is easy to vibrate at the high-frequency end.
15. The steady-amplitude capacitor is used in the authenticator to stabilize the output signal amplitude.
16. Pre-increased capacitance in order to avoid the attenuation and loss of audio modulated signals during processing, the RC high-frequency component is set to improve the network capacitance.
17. In order to restore the original sound signal, the de-weighting capacitor must be used to reduce the high-frequency components and noise of the audio signal, and set the capacitor in the RC network.
18. The phase-shifting capacitor is used to change the phase of the AC signal.
19. The feedback capacitor is interconnected between the input and output ends of the amplifier, so that the output signal is fed back to the capacitor at the input end.
20. The step-down throttling capacitor is connected in a series in the AC circuit, and the AC is throttled by the capacitor's capacity and resistance to the AC.
21. The back-end capacitor is used for the line scanning output circuit, and is connected between the collector and the emission pole of the line output tube to generate a high-voltage line scanning sawtooth wave back-end pulse, the pressure is generally above v.
22. The calibration capacitor is connected in the deflection coil loop to correct the Extended Linear distortion of the image tube edge.
23. The self-lifting boost capacitor uses the charging and discharging energy storage characteristics of the capacitor to increase the voltage at a certain point of the circuit, so that the voltage at this point is twice the voltage value at the power supply end.
Capacitors are almost indispensable energy storage components in electronic circuits. They have the characteristics of isolating DC, Connecting AC, and blocking low frequency. It is widely used in coupling, isolation, bypass, filtering, tuning, energy conversion, automatic control, and other circuits. Familiarity with the name and meaning of capacitors in different circuits helps us understand the electronic circuit diagram.
1. The filter capacitor is connected between the positive and negative ends of the DC power supply to filter out unnecessary AC components in the DC power supply, so that the DC power is smooth. Large-capacity electrolytic capacitors are usually used, and other types of small-capacity capacitors can be connected in the circuit at the same time to filter out high-frequency AC.
2. the decoupling capacitor is connected between the positive and negative power supply of the amplifier circuit to prevent parasitic Oscillation Caused by positive feedback formed by the internal resistance of the power supply.
3. in the AC and DC signal circuits, the bypass capacitor connects the capacitor to either end of the resistor or from a point of the circuit to the public potential, and sets a channel for the AC signal or pulse signal, avoid voltage drop Attenuation Caused by the resistance of the AC signal.
4. in the AC signal processing circuit, the coupling station capacitor is used to connect the signal source and the signal processing circuit or to connect the two amplifiers in a stage to cut off the DC and let the AC signal or pulse signal pass through, so that the front and back-level amplifier circuit's DC work point does not affect each other.
5. The tuned capacitor is connected to both ends of the resonant circuit's oscillating coil to select the oscillating frequency.
6. The auxiliary capacitance of the pad capacitor and the main capacitor of the resonant circuit are connected in series. Adjusting this can reduce the frequency range of the oscillating signal and significantly increase the oscillation frequency of the low-frequency end. Appropriately select the capacity of the pad capacitor to increase the low-end frequency curve up, close to the ideal frequency tracking curve.
7. The compensated capacitor is an auxiliary capacitor in parallel with the main capacitor of the resonant circuit. Adjusting this capacitor can increase the frequency range of the oscillating signal.
8. The neutralization capacitor is connected to the base pole of the transistor amplifier and the transmitting pole to form a negative feedback network to suppress the self-oscillation caused by the capacitance between the transistor poles.
9. The steady-Frequency Capacitor acts as a stable oscillating frequency in the oscillating circuit.
10. The timing capacitor is connected in series with the resistor R in the RC time constant circuit to jointly determine the charge-discharge duration.
11. The acceleration capacitor is connected to the oscillator feedback circuit to accelerate the positive feedback process and increase the amplitude of the oscillating signal.
12. The capacitor that is connected in series to shorten the length of the oscillating Inductor in the ultra-high frequency head circuit.
13. In a three-point capacitive oscillator circuit, the capacitor in series with the inductor oscillator coil can eliminate the effect of transistor junction capacitance on frequency stability.
14. In a three-point capacitive oscillator circuit, the tin-drawn capacitor is connected in parallel with the two ends of the inductor oscillator coil to eliminate the effect of the transistor junction capacitance, so that the oscillator is easy to vibrate at the high-frequency end.
15. The steady-amplitude capacitor is used in the authenticator to stabilize the output signal amplitude.
16. Pre-increased capacitance in order to avoid the attenuation and loss of audio modulated signals during processing, the RC high-frequency component is set to improve the network capacitance.
17. In order to restore the original sound signal, the de-weighting capacitor must be used to reduce the high-frequency components and noise of the audio signal, and set the capacitor in the RC network.
18. The phase-shifting capacitor is used to change the phase of the AC signal.
19. The feedback capacitor is interconnected between the input and output ends of the amplifier, so that the output signal is fed back to the capacitor at the input end.
20. The step-down throttling capacitor is connected in a series in the AC circuit, and the AC is throttled by the capacitor's capacity and resistance to the AC.
21. The back-end capacitor is used for the line scanning output circuit, and is connected between the collector and the emission pole of the line output tube to generate a high-voltage line scanning sawtooth wave back-end pulse, the pressure is generally above v.
22. The calibration capacitor is connected in the deflection coil loop to correct the Extended Linear distortion of the image tube edge.
23. The self-lifting boost capacitor uses the charging and discharging energy storage characteristics of the capacitor to increase the voltage at a certain point of the circuit, so that the voltage at this point is twice the voltage value at the power supply end.
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