
Audio Amplifiers
... This self-made 2x100W audio amplifier board is a perfect class-D architecture integrated with Tripath TC2000 and TP2050. This amplifiers blend eye-catching aesthetics, power and sonic integrity in a way that has been capturing the imagination of music lovers and home theater enthusiasts for decades. ...
... This self-made 2x100W audio amplifier board is a perfect class-D architecture integrated with Tripath TC2000 and TP2050. This amplifiers blend eye-catching aesthetics, power and sonic integrity in a way that has been capturing the imagination of music lovers and home theater enthusiasts for decades. ...
tesfaq 27KB Aug 20 2001 09:27:16 AM - hot
... into line with stationary electrodes to form the gap. As the disk rotates each set of electrodes comes into play in sucession. With a large number of spinning electrodes and a high rotational speed the number of gap presentations can become quite high. And quenching is quite good with a rotary as th ...
... into line with stationary electrodes to form the gap. As the disk rotates each set of electrodes comes into play in sucession. With a large number of spinning electrodes and a high rotational speed the number of gap presentations can become quite high. And quenching is quite good with a rotary as th ...
Document
... Video signals without sufficient bandwidth become fuzzy as they fail to abruptly change the contrast of pictures from complete white into complete black. CH 11 Frequency Response ...
... Video signals without sufficient bandwidth become fuzzy as they fail to abruptly change the contrast of pictures from complete white into complete black. CH 11 Frequency Response ...
Untitled
... These RCA outputs are situated next to the tape RCA inputs, and are provided to interface to a pair of line level recording devices. The position of the record selector on the front panel determines from which device a recording is being made. As these tape outputs are always ‘live’, both can be use ...
... These RCA outputs are situated next to the tape RCA inputs, and are provided to interface to a pair of line level recording devices. The position of the record selector on the front panel determines from which device a recording is being made. As these tape outputs are always ‘live’, both can be use ...
XR5486E 数据资料DataSheet下载
... logic-high receiver output when the inputs are open or shorted, or when they are connected to a terminated transmission line with all drivers disabled. The control pins RE and DE feature a hotswap capability allowing live insertion without spurious data transfer. The drivers are not slew rate limite ...
... logic-high receiver output when the inputs are open or shorted, or when they are connected to a terminated transmission line with all drivers disabled. The control pins RE and DE feature a hotswap capability allowing live insertion without spurious data transfer. The drivers are not slew rate limite ...
CVD Driver - Oriental Motor
... yy Assign qualified personnel the task of installing, wiring, operating/controlling, inspecting and troubleshooting the product. Failure to do so my result in fire or injury. yy If this product is used in a vertical application, be sure to provide a measure for the position retention of moving parts ...
... yy Assign qualified personnel the task of installing, wiring, operating/controlling, inspecting and troubleshooting the product. Failure to do so my result in fire or injury. yy If this product is used in a vertical application, be sure to provide a measure for the position retention of moving parts ...
MAX13487E/MAX13488E Half-Duplex RS-485-/RS-422-Compatible Transceiver with AutoDirection Control General Description
... The MAX13487E/MAX13488E feature Maxim’s proprietary AutoDirection control. This architecture makes the devices ideal for applications, such as isolated RS-485 ports, where the driver input is used in conjunction with the driver-enable signal to drive the differential bus. The MAX13487E features redu ...
... The MAX13487E/MAX13488E feature Maxim’s proprietary AutoDirection control. This architecture makes the devices ideal for applications, such as isolated RS-485 ports, where the driver input is used in conjunction with the driver-enable signal to drive the differential bus. The MAX13487E features redu ...
A Monolithic High-Efficiency 2.4-GHz 20-dBm SiGe BiCMOS Envelope-Tracking OFDM Power Amplifier
... the low-efficiency region most of the time [8], [9]. The efficiency can be improved using gate/base modulation approaches [10], but the improvement in efficiency is relatively modest. In all of these cases, the average efficiency is much lower than the peak efficiency for a high PAR signal, demonstr ...
... the low-efficiency region most of the time [8], [9]. The efficiency can be improved using gate/base modulation approaches [10], but the improvement in efficiency is relatively modest. In all of these cases, the average efficiency is much lower than the peak efficiency for a high PAR signal, demonstr ...
SP3490 数据资料DataSheet下载
... EXAR Corporation reserves the right to make changes to any products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no representation that the circuits are free of patent infringement. Charts and schedules contained herein are only for i ...
... EXAR Corporation reserves the right to make changes to any products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no representation that the circuits are free of patent infringement. Charts and schedules contained herein are only for i ...
Eine 100 Watt Endstufe
... to reduce the power-supply voltage to 24 V. RF output power will decrease about 10 W from the maximum levels achieved with a 28 V supply. From a thermal standpoint, the IRF510 power MOSFET is a poor choice for this RF amplifier application. Although I must say I am impressed with the robustness of t ...
... to reduce the power-supply voltage to 24 V. RF output power will decrease about 10 W from the maximum levels achieved with a 28 V supply. From a thermal standpoint, the IRF510 power MOSFET is a poor choice for this RF amplifier application. Although I must say I am impressed with the robustness of t ...
D356B Electroluminescent Lamp Driver IC
... phosphor material in the dielectric. The phosphor glows when a strong AC voltage is applied across the EL lamp electrodes. The required AC voltage is typically not present in most systems and must be generated from a low voltage DC source. Rogers developed its patented three-port (3P) switch-mode in ...
... phosphor material in the dielectric. The phosphor glows when a strong AC voltage is applied across the EL lamp electrodes. The required AC voltage is typically not present in most systems and must be generated from a low voltage DC source. Rogers developed its patented three-port (3P) switch-mode in ...
Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in µMAX Package
... The MAX1481/MAX1484 are functionally equivalent to the industry-standard MAX491 and 75180, and are designed for space-constrained, full-duplex RS-422 applications. All parts contain one driver and one receiver and feature a 1/8-unit-load receiver input impedance, allowing up to 256 transceivers on t ...
... The MAX1481/MAX1484 are functionally equivalent to the industry-standard MAX491 and 75180, and are designed for space-constrained, full-duplex RS-422 applications. All parts contain one driver and one receiver and feature a 1/8-unit-load receiver input impedance, allowing up to 256 transceivers on t ...
Tech Note MSP to PLC Direct by Koyo DL105 Revision: 4.10
... the most on the DL105 and it sets the standard. The ladder logic has been refined and optimized to a very high degree. In someways this may make the driver programs harder to read but it is felt that efficient use of memory and execution time are the most important factors. 13. DV-1000 Data Access U ...
... the most on the DL105 and it sets the standard. The ladder logic has been refined and optimized to a very high degree. In someways this may make the driver programs harder to read but it is felt that efficient use of memory and execution time are the most important factors. 13. DV-1000 Data Access U ...
ELECTROMAGNETIC INDUCTION
... where is the magnetic flux through the circuit. When the B-field is uniform and at right angles to the area A bounded by the circuit, then the flux is simply B*A. (For non-uniform fields, the flux must be calculated by integration.) Often it is useful to distinguish between the case where the B-fi ...
... where is the magnetic flux through the circuit. When the B-field is uniform and at right angles to the area A bounded by the circuit, then the flux is simply B*A. (For non-uniform fields, the flux must be calculated by integration.) Often it is useful to distinguish between the case where the B-fi ...
Impedance Measurements, Computations and their
... giving the same effect in both planes. In the arcs the effect is weaker and different for both planes due to the elliptic chamber. ...
... giving the same effect in both planes. In the arcs the effect is weaker and different for both planes due to the elliptic chamber. ...
beat-frequency audio genera tor
... which will lie between 0 to 20 or 20 to 40 kc, is fed to thelamplifier in· put level control through a low-pass filter, which remo•s frequency components above 40 kc. The output of the amplifier is transformercoupled to the output system. The complete schematic diagram, including power supply, is sh ...
... which will lie between 0 to 20 or 20 to 40 kc, is fed to thelamplifier in· put level control through a low-pass filter, which remo•s frequency components above 40 kc. The output of the amplifier is transformercoupled to the output system. The complete schematic diagram, including power supply, is sh ...
Demonstrations in Ultrasound Imaging and Beam Steering Using
... voltage potential [2]. Conversely, a piezoelectric material also has the ability to produce an electric charge if it is subject to some compression or tension force. The first application of a piezoelectric crystal in any form of sonography – the use of appropriate instruments to construct images fr ...
... voltage potential [2]. Conversely, a piezoelectric material also has the ability to produce an electric charge if it is subject to some compression or tension force. The first application of a piezoelectric crystal in any form of sonography – the use of appropriate instruments to construct images fr ...
MAX3430 ±80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver General Description
... ±80V protection from overvoltage signal faults on communication bus lines. Each device contains one driver and one receiver, and the output pins can withstand faults, with respect to ground, of up to ±80V. Even if the faults occur when the transceiver is active, shut down, or powered off, the device ...
... ±80V protection from overvoltage signal faults on communication bus lines. Each device contains one driver and one receiver, and the output pins can withstand faults, with respect to ground, of up to ±80V. Even if the faults occur when the transceiver is active, shut down, or powered off, the device ...
Electronic Stethoscope - BME Design Projects
... acoustic technology. The stethoscopes that are now commonly used are called “Littman stethoscopes” for this reason. A stethoscope is a very straightforward device. The chest piece consists of a shallow, bell-shaped piece and a clear, stiff diaphragm, which is then connected to the metal earpieces by ...
... acoustic technology. The stethoscopes that are now commonly used are called “Littman stethoscopes” for this reason. A stethoscope is a very straightforward device. The chest piece consists of a shallow, bell-shaped piece and a clear, stiff diaphragm, which is then connected to the metal earpieces by ...
A Guide to the Design of Laminate PCBs at Microwave
... must be selected carefully. An inappropriate choice can result in vaporisation of tracks due to excessive RF power flow. The copper tracks are generally covered so as to stop corrosion and/or oxidation. The covering generally takes the form of ENIG (Electroless Nickel Immersion Gold) for low frequen ...
... must be selected carefully. An inappropriate choice can result in vaporisation of tracks due to excessive RF power flow. The copper tracks are generally covered so as to stop corrosion and/or oxidation. The covering generally takes the form of ENIG (Electroless Nickel Immersion Gold) for low frequen ...
JFET Amplifier
... i. Create and simulate the schematic of Figure 2 in OrCAD – Capture. All the capacitors have the value of 100 uF. The AC input is VSIN with settings: Voffset = 0, Vampl = 50mV and f = 1kHz. The output of the amplifier is loaded with a resistor Rin. Capture the input and output voltages in Pspice and ...
... i. Create and simulate the schematic of Figure 2 in OrCAD – Capture. All the capacitors have the value of 100 uF. The AC input is VSIN with settings: Voffset = 0, Vampl = 50mV and f = 1kHz. The output of the amplifier is loaded with a resistor Rin. Capture the input and output voltages in Pspice and ...
ADM3493 数据手册DataSheet 下载
... Receiver Output. When enabled, if A > B by 200 mV, then RO = high. If A < B by 200 mV, then RO = low. Receiver Output Enable. A low level enables the receiver output, RO. A high level places it in a high impedance state. If RE is high and DE is low, the device enters a low power shutdown mode. Drive ...
... Receiver Output. When enabled, if A > B by 200 mV, then RO = high. If A < B by 200 mV, then RO = low. Receiver Output Enable. A low level enables the receiver output, RO. A high level places it in a high impedance state. If RE is high and DE is low, the device enters a low power shutdown mode. Drive ...
An Extended Doherty Amplifier With High Efficiency , Student Member, IEEE
... range of output power compared to a classical Doherty design. The output power range between the two peaks in power-added efficiency (PAE) (as seen in Fig. 2) of 9 dB is achieved with a careful design of the input and output matching networks. In Section II, the basic principle of operation and a de ...
... range of output power compared to a classical Doherty design. The output power range between the two peaks in power-added efficiency (PAE) (as seen in Fig. 2) of 9 dB is achieved with a careful design of the input and output matching networks. In Section II, the basic principle of operation and a de ...
MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487 Low
... The MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487 are low-power transceivers for RS-485 and RS422 communication. Each part contains one driver and one receiver. The MAX483, MAX487, MAX488, and MAX489 feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly ...
... The MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487 are low-power transceivers for RS-485 and RS422 communication. Each part contains one driver and one receiver. The MAX483, MAX487, MAX488, and MAX489 feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly ...
Tech Note MSP to GE 90 Micro Revision: 4.11 Following are some
... determined its status can be referenced multiple times by continuation contacts for different output branches. Once the status of the continuation coil is determined it is not changed until it is used again. The ladder logic has been refined and optimized to a very high degree. In someways this may ...
... determined its status can be referenced multiple times by continuation contacts for different output branches. Once the status of the continuation coil is determined it is not changed until it is used again. The ladder logic has been refined and optimized to a very high degree. In someways this may ...
Loudspeaker

A loudspeaker (or loud-speaker or speaker) is an electroacoustic transducer; a device which converts an electrical audio signal into a corresponding sound. The first primitive loudspeakers were invented during the development of telephone systems in the late 1800s, but electronic amplification by vacuum tube beginning around 1912 made loudspeakers truly practical. By the 1920s they were used in radios, phonographs, public address systems and theatre sound systems for talking motion pictures.The most widely-used type of speaker today is the dynamic speaker, invented in 1925 by Edward W. Kellogg and Chester W. Rice. The dynamic speaker operates on the same basic principle as a dynamic microphone, but in reverse, to produce sound from an electrical signal. When an alternating current electrical audio signal input is applied through the voice coil, a coil of wire suspended in a circular gap between the poles of a permanent magnet, the coil is forced to move rapidly back and forth due to Faraday's law of induction, which causes a diaphragm (usually conically shaped) attached to the coil to move back and forth, pushing on the air to create sound waves. Besides this most common method, there are several alternative technologies that can be used to convert an electrical signal into sound. The sound source (e.g., a sound recording or a microphone) must be amplified with an amplifier before the signal is sent to the speaker.Speakers are typically housed in an enclosure which is often a rectangular or square box made of wood or sometimes plastic. Where high fidelity reproduction of sound is required, multiple loudspeakers may be mounted in the same enclosure, each reproducing a part of the audible frequency range (picture at right). In this case the individual speakers are referred to as ""drivers"" and the entire unit is called a loudspeaker. Miniature loudspeakers are found in devices such as radio and TV receivers, and many forms of music players. Larger loudspeaker systems are used for music, sound reinforcement in theatres and concerts, and in public address systems.