conduction earphones

When analyzing the circuit, the transistor conduction voltage is regarded as zero, when the input voltage is low, the distortion caused by the transistor cutoff is called the cross-over distortion. This distortion usually occurs at a value of 0. The same as the general amplification circuit, the method of eliminating the cross-over distortion is to set the appropriate static operating point, so that the transistor in the static micro-

P Channel MOS transistor as a switch, the gate source of the threshold is -0.4v, when the voltage difference of the gate source is -0.4v will make DS conduction, if S is 2.8v,g to 1.8V, then Gs=-1v,mos tube conduction, D is 2.8V If S is 2.8v,g to 2.8V,VGSW Then the MoS tube is not conduction, D is 0V, So, if 2.8V is connected to S, the MoS Tong is powering the

History: June 29,200 9: Incorrect change.Reminder, modification error. Thank you.Tadiyan. Symptom: The built-in speakers have no sound, and it is useless to adjust the volume at the sound volume. Many Apple laptops have red light at the headphone jack. Restarting and reinstalling the system cannot be solved. Solve the Problem of silent speakers and red lights at the plug-in: What is the principle?There is a mechanical switch in the plug-in. Normally, when the headset is inserted, the switch

1. Wake up your body 1. Close your eyes for dinner. 2. Use your fingers to distinguish coins. 3. Put on your earphones and go up or down the stairs. 4. Hold your nose and drink coffee. 5. Open your throat and read aloud. 6. Smell the pictures of coffee Fish. Ii. Search for brain stimulation 7. Order food that has not been eaten at the restaurant. 8. spend your money. 9. Dedicated remote routes. 10. Use a cup on the left side. 11. Listen to different

After the upgrade to 12.04 today, all aspects are normal, but when I want to listen to the song, I started to use headphones and found that even if the volume is adjusted to the maximum, it is still silent. Later, I pulled out my earphones and found a sound. That may be where the configuration is incorrect. Solution: run alsamixer on the terminal and move the cursor... After upgrading to 12.04 today, all aspects are normal, but when you want to liste

', Price:17, Category: ' laptop charger ', Price: 70, Category: ' electronics '}, {name: ' mouse ', Price: 40, Category: ' electronics '}, {name: ' earphones ', Price: 20, Category: ' monitor ', Price: 120, Category: ' electronics '}]}}); You can now use a custom filter like a filter that comes with Vue.ul> li v-for="product in products"> {{ product.name | capitalize }} - {{ product.price | discount | currency }} li>ul>The above HTML c

have to reverse a diode?Because the coil of the relay is a large inductor, it can store electricity in the form of a magnetic field, so when he is absorbing a large amount of magnetic field when the transistor of the control relay changes from the conduction to the end of the coil power off but there is a magnetic field in the coil will generate a reverse EMF voltage up to 1000V The above is easy to penetrate the drive transistor or other circuit com

the loadthe size of the current is determined. The following circuit diagrams are other forms of capacitive buck Drive circuitry for design-time reference:in the figure II circuit, SCR and R3 form a protective circuit, when the current flowing through the LED is greater than the set value,SCR conduction aThe current of the circuit, so that the led works in a constant current state, so as to avoid the LED due to instantaneous high pressure and damage.

For push-pull output, open-drain output, multiplexed open-drain output, multiplexed push-pull outputAnd the difference between pull-in input, drop-down input, floating-space input, analog inputRecently, when looking at the data sheet, we found that there are 8 types of GPIO configurations in CORTEX-M3:(1) Gpio_mode_ain analog input(2) gpio_mode_in_floating floating Air input(3) GPIO_MODE_IPD drop-down input(4) Gpio_mode_ipu pull-up input(5) Gpio_mode_out_od open-drain output(6) GPIO_MODE_OUT_PP

following examples illustrate: Example: A switch circuit known to be composed of PNP tubes is shown in Figure 3. If the conduction voltage Ube = -0.1v, saturation uces= 0.1V, ask: The UI is 0V, -2V and -5v, the working state of the pipe, the corresponding uo of how many volts. Figure 3 Solution: (1) when u1 = 0V, the transistor is in a cut-off state (the pressure drop on RB is not considered during analysis). (2) When u1 = -2v, transistor

0 "13" 1 1 1 0 0 "14" 1 1 1 1 0 "15" 1 are not plugged in ii. Typical Application examples1. Single-button volume controllerThe single-button volume controller circuit is shown in Figure 6. The VMOs tube VT1 acts as a variable resistor and is connected to the audio device's volume potentiometer output to the ground. The resistance of the

hot and fast connection,This is equivalent to half-wave rectification, which reduces the voltage by half. Therefore, according to P = (U ^ 2)/R, the heat resistance of W is 50 euro.MB ). It can be obtained that the average power has been reduced to 1/4 of the rated power, that is, 250 W, but in fact the instantaneousThe time power is the same as that before modification, but only the first half of the time after modification, average to the entire cycleThe average power is reduced. This method

Today, I upgraded to Ubuntu12.04, which is normal in all aspects. However, when I wanted to listen to the songs, I started to use headphones and found that even if the volume was adjusted to the maximum, I still remained silent. Later, I pulled out my earphones and found a sound. That may be where the configuration is incorrect. Solution: Run alsamixer on the terminal, move the cursor to the Headphone, and move up. However, one more operation was to p

of me !!!" But I finally did not shout out. Maybe the driver is just the same as me. Think about it later. I think I have something wrong. When I am on the road, it is best not to forget me too much and immerse myself in it. Security is the most important thing. This reminds me of what I said when I got off work. "It's dangerous to ride a bicycle and listen to headphones! Do you just listen to one ?" I smiled and said, "It's okay. I have a proper size. My e