edfa amplifier

the ATI HDMI Output icon and select the Enable option, a green "√" (Figure 3) appears on the LCD TV icon, which indicates that the HDMI audio was successfully used as the default playback device. Figure 3 Setting the HDMI audio as the default device Four, HDMI audio output back to normal Click the "Apply" button, at this time through the HDMI output to the LCD TV, the sound of high-definition movies back to normal, but it is worth noting that if you always can not display the "

Router relay believe that many friends are unfamiliar, its role is mainly to amplify the role of wireless router signal, so as to achieve a wider range of WiFi wireless signal coverage. Today's small series for everyone to bring is a more popular TENGDA A301 signal amplifier repeater without wiring by the use of tutorial, the device can significantly enhance the WiFi signal, can be extended 130 ping more than 2 wall, support with a key to the router m

6-channel power amplifier plus a set of passive speakers; Transferred from www.58116.cn 4, can support Dolbydigital and DTS decoding DVD player software or the use of external dolbydigital, DTS decoder; 5, a group of speaker cable, if the use of external power amplifier or decoder, also need to be equipped with the corresponding audio cable. Six basic designs When designing surround sound, a sound desi

of the distortion caused by it is limited to the refutation of some "burning friends" high-end speech, in fact, jitter The distortion that can be caused is much smaller than other distortions generated by the circuit itself, so that the effects can be ignored. Compared with the jitter can bring the impact of sound quality, amplification circuit has a significantly greater impact. Because of the technical limitation of the amplification circuit components, the output signal of the digital analo

We go to the Android Market or Baidu Search "volume Amplifier" and then install to the Millet mobile phone. After the "volume amplifier" is installed, we put it and set it to the automatic start program inside Then began to set up, in the Millet phone click "Settings" and then we open into the "speaker settings" as shown in the following image In the Open interface we find "audio sett

G9208 's soundalive+ and tube amp functions will reproduce the rich surround effect, as well as simulate the soft timbre of the tube amplifier. The opening method is as follows:1. Under the Standby page, click "Application".2. Click "Set".3. Click "Sound and Notice".4. Click on "Sound quality and sound effects".5. If you need to reproduce the rich surround sound effect, please click "soundalive+" to open it. (note: Sound effects are only available whe

coefficients, decompression, after the reverse MDCT (inverse MDCT) to restore 512 coefficients to the original sound data, Before and after the original sound data is inconsistent, because in the compression process, the removal of redundant and irrelevant data. The FMDCT transformation formula is:K=0,1,...,n/2-1The type of N is the conversion window length, that is, the sample points per block, n=8,16,...,1024,2048.n0= (n/2+1)/2,x (N) is the last domain value, and X (k) is the frequency domain

The PNP tube on the IC has two longitudinal and transverse types:The longitudinal PnP tube is also called the substrate tube, due to the structural relationship of the internal carrier along the longitudinal movement. The characteristic of this tube is that the base-area width of the tube can be accurately controlled and made very thin. Therefore, the β of the longitudinal pnp tube is very large. The β value of the super-β tube is at 200.015 million (α=0.995-0.9998). The disadvantage is that the

, users through the Downlink optical interface Access system. The relay conversion part is mainly fiber relay amplifier, wavelength converter, photoelectric converter. The optical fiber relay amplifier is used to realize the transmission of the optical fiber signal relay, which can transmit the information in a long distance, and the wavelength converter completes the conversion between the different wavel

the different coverage of each business. The use of advanced up and down line link Iteration budget concept, the determination of the radius of the community more scientific and reasonable, to avoid the common network design algorithm is very easy to bring cover empty or base station surplus phenomenon, for operators to save the investment of the distribution station. In the process of network design, fully consider the development of various business, calculate the various stages of business

of auto-iris industrial lenses: One is the transmission of a video signal and a power source from the camera to the lens to control the aperture on the lens, the lens itself contains an amplifier circuit to convert the video amplitude signal from the camera to the control of the optical coil motor, which is called video-driven The other type uses the DC voltage on the camera to directly control the aperture, called the DC (DC) drive, which contains o

wires and the cost is significantly lower than WiMAX, but over time, once the development of WiMAX significantly reduces the cost, DSL technology will be threatened to be eliminated by WiMAX technology. Ii. WiMAX and Cable Cable Modem technology can be divided into two-way symmetric Transmission and non-symmetric Transmission. The symmetric transmission rate is 2 Mbit/s ~ 4 Mbit/s, up to 10 Mbit/s. The downlink rate of asymmetric transmission is 51 Mbit/s, and the uplink rate is 500 Kbit/s ~ 31

. The last is OR. This also requires two transistors. As long as one of the two base poles is 1 (high level), the current will flow to the output end and get 1. VII. Circuit of the all-processors The three logic gate transistor implementation, into the full amplifier design, you can draw a circuit diagram. According to the circuit diagram, an integrated circuit with a transistor and a circuit board is assembled into a full

I adjusted the volume with a xfce4-mixcer under Ubuntuxfce4, but it was restored to 0 after each restart. Solution: After sudoapt-getinstallalsa-util uses xfce-mixcer to adjust the volume, execute alsactlstore to adjust the volume of the audio player, select external-amplifier from hidden-switch in mixcer settings to use sudo I adjusted the volume with a xfce4-mixcer on Ubuntu xfce4, but it was restored to 0 after each restart. Solution: sudo apt-ge

corner or upper and lower floors of the place CC2530 not necessarily able to meet the communication requirements, to solve this problem, you can CC2530 The CC2591 RF front-end is added to the working circuit to increase the output power and receive sensitivity, thus achieving the purpose of increasing the transmission distance. The CC2591 uses a power amplifier to increase output power and improves reception sensitivity through a low noise

phenomenon; According to the figure of the transformer model, capacity and impedance match,third, the insulation resistance determinationThe two terminals of the broadcast line are disconnected, and the insulation resistance between the wires is measured with a 500V meter. The measurement project is: wire and wire and wire and ground insulation resistance, insulation resistance is generally not less than 0.5mω, for each circuit resistance should be carried out in the sub-loop measurement, the m

Equivalent series resistance ESR of capacitance The prevailing view is that an external capacitance of relatively large capacity with a small equivalent series resistance (ESR) can well absorb the peak (ripple) current at fast conversion. However, sometimes such a choice can cause the voltage regulator (especially the linear regulator ldo) instability, so it is necessary to choose a reasonable capacitance of small capacity and large capacity. Always remember that a voltage regulator is an

high level, nor low level. Because of the internal structure of the logic device, when its input pin is dangling, it is equivalent to the high level of the pin .When used in practice, pins are not recommended to be suspended and susceptible to interference. Popular speaking is to let the pin nothing to pick up, floating empty. 4 analog input refers to the traditional way of input . digital input is the input PCM digital signal 0,1 binary digital signal convert by digital-to-analog

connect a microphone to an audio/video device. Its basic features are: Rated signal level:-70db ~ -20 dBInput Impedance: 600 Ω or ≥1kb Ω (corresponding to low-resistance microphone), 20 KB Ω ~ 50 KB (corresponding to low-resistance microphone ).Transmission Mode: Balance (professional interface), non-balance (non-professional interface ). (3) earphone interface:It is used to connect audio and video devices with headset. Its basic features are: Output impedance: the output impedance is not

must be considered. In addition, if you want to obtain the maximum output power, you must also consider the impedance matching problem .) 2. output impedance Either the signal source or the amplifier or the power supply have an output impedance problem. The output impedance is the internal resistance of a signal source. Originally,An ideal voltage source (including power supply) with an internal resistance of 0, OrThe impedance of the ideal curre