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Purple Audio Inc.
Purple Audio Inc.

... follows. First remove signals from both limiters and disable gain reduction by rotating the Attack controls fully CCW. Set the meter function switches for "GR" mode. Connect one MC76 to the other by plugging a 1/4” “mono” patch cable (like a short guitar cable) from the offset jack on one unit to th ...
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... meter, etc to get maximum power. 3. Move the carriage probe in the slotted section in particular direction until there is a minimum deflection in the indicating meter is obtained note this distance as d1. 4. Once again move the carriage probe from its position d1 in particular direction in order to ...
Triple-Push Operation for Combined Oscillation/Divison
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... and flexibility in choosing the output filter L and C components; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an internally and externally set slow-start circuit to limit in-rush currents; and a power good output useful for processor/logic reset, fault si ...
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... and high output current using a low 5.6mA supply current. At unity-gain, the OPA820 gives > 800MHz bandwidth with < 1dB peaking. The OPA820 complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input offset voltage of ±750µV and an offset current of ±4 ...
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... switched-capacitor filter (SCF) operates from a single +5V supply. The device draws only 2.9mA of supply current and allows corner frequencies from 1Hz to 2kHz, making it ideal for low-power post-DAC filtering and anti-aliasing applications. The MAX7480 features a shutdown mode, which reduces the su ...
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AD834 数据手册DataSheet 下载
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... bipolar process used to fabricate the AD834, the outputs appear as a differential pair of currents at open collectors. To provide a single-ended ground referenced voltage output, some form of external current to voltage conversion is needed. This may take the form of a wideband transformer, balun, o ...
max3221-max3243.pdf
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... the INVALID output is high when the device is on and low when the device is shut down. Because INVALID indicates the receiver inputs’ condition, it can be used in any mode (Figure 3). Table 2 and Figure 3c summarize the MAX3221/ MAX3223/MAX3243 operating modes. FORCEON and FORCEOFF override the auto ...
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... The OP270 is a high performance, monolithic, dual operational amplifier with exceptionally low voltage noise, 5 nV/÷Hz max at 1 kHz. It offers comparable performance to ADI’s industry standard OP27. The OP270 features an input offset voltage below 75 mV and an offset drift under 1 mV/∞C, guaranteed ...
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Analog Applications Journal
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... Introduction to phase-locked loop system modeling . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Phase-locked loops (PLLs) are one of the basic building blocks in modern electronic systems. They have been widely used in communications, multimedia and many other applications. Starting from a ...
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Regenerative circuit



The regenerative circuit (or regen) allows an electronic signal to be amplified many times by the same active device. It consists of an amplifying vacuum tube or transistor with its output connected to its input through a feedback loop, providing positive feedback. This circuit was widely used in radio receivers, called regenerative receivers, between 1915 and World War II. The regenerative receiver was invented in 1912 and patented in 1914 by American electrical engineer Edwin Armstrong when he was an undergraduate at Columbia University. Due partly to its tendency to radiate interference, by the 1930s the regenerative receiver was superseded by other receiver designs, the TRF and superheterodyne receivers and became obsolete, but regeneration (now called positive feedback) is widely used in other areas of electronics, such as in oscillators and active filters. A receiver circuit that used regeneration in a more complicated way to achieve even higher amplification, the superregenerative receiver, was invented by Armstrong in 1922. It was never widely used in general receivers, but due to its small parts count is used in a few specialized low data rate applications, such as garage door openers, wireless networking devices, walkie-talkies and toys.
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