
Modifying the Yaesu FT-847 External 22.625 MHz
... This document describes the modification of an FT-847 to allow an external 22.625 MHz Reference oscillator to be connected to the rig. So, why do this modification? Weak-signal experiments require a rig that is both stable and accurately on-frequency. The FT-847 derives its internal mixing frequenci ...
... This document describes the modification of an FT-847 to allow an external 22.625 MHz Reference oscillator to be connected to the rig. So, why do this modification? Weak-signal experiments require a rig that is both stable and accurately on-frequency. The FT-847 derives its internal mixing frequenci ...
Electronics Aspect - Personal Web Pages
... 2. Navigate using the white-line (sensor to detect white line and software for deciding the path). 3. Have the circuitry to get the code serially with help of an IR receiver. 4. To extract the 3 digits from “ieeexyzieee” received serially. 5. Display the numbers and sound the buzzer once in the Rebo ...
... 2. Navigate using the white-line (sensor to detect white line and software for deciding the path). 3. Have the circuitry to get the code serially with help of an IR receiver. 4. To extract the 3 digits from “ieeexyzieee” received serially. 5. Display the numbers and sound the buzzer once in the Rebo ...
Relative material
... feedback results when the signal being feed back is in phase with the input signal. Negative feedback occurs when the signal being feed back is 180 degrees out of phase with the input signal. In a common emitter or common collector amplifier, feedback is introduced into the base of the first stage t ...
... feedback results when the signal being feed back is in phase with the input signal. Negative feedback occurs when the signal being feed back is 180 degrees out of phase with the input signal. In a common emitter or common collector amplifier, feedback is introduced into the base of the first stage t ...
Systems Repair Worksheet
... 18. In AC circuits, the actual resistance of a load is called its _______________. 19. _________ law is the name given to the formula that calculates electrical power used by a load. 20. Circuits must have consumers or _________, power ____________, & ____________ providing paths along with control ...
... 18. In AC circuits, the actual resistance of a load is called its _______________. 19. _________ law is the name given to the formula that calculates electrical power used by a load. 20. Circuits must have consumers or _________, power ____________, & ____________ providing paths along with control ...
KIRCHOFF`S VOLTAGE LAW: EXAMPLE 2
... (a) First, we identify the loops in the circuit. As shown below, we can choose any two of the three loops. ...
... (a) First, we identify the loops in the circuit. As shown below, we can choose any two of the three loops. ...
幻灯片 1 - 信息科学与技术学院 - Sun Yat
... The analysis and design of AM radios (and communication systems in general) is usually conducted in the frequency domain using Fourier analysis, which allows us to represent signals as combinations of sinusoids (sines and cosines). ...
... The analysis and design of AM radios (and communication systems in general) is usually conducted in the frequency domain using Fourier analysis, which allows us to represent signals as combinations of sinusoids (sines and cosines). ...
ATF-55143 Application Note 1376
... of source inductance can often be used to enhance LNA performance. The amount of inductance required is usually only a few tenths of a nano-henry. This is effectively equivalent to increasing the source leads by only .040 inch or so. The effect can be easily modeled using a RF simulation tool such a ...
... of source inductance can often be used to enhance LNA performance. The amount of inductance required is usually only a few tenths of a nano-henry. This is effectively equivalent to increasing the source leads by only .040 inch or so. The effect can be easily modeled using a RF simulation tool such a ...
PSpice Tutorial - the GMU ECE Department
... – Demo versions of the software can be downloaded free from ...
... – Demo versions of the software can be downloaded free from ...
Aug 1998 4.5ns Dual-Comparator-Based Crystal Oscillator has 50% Duty Cycle and Complementary Outputs.PDF
... noise bringing the total to about 24µV). This compares favorably with the nominal 16-bit LSB increment of 31µV, thus barely impacting the converter dynamic range. The common mode output voltage of the circuit in Figure 2 is fixed at 0.5V DC, though some loads may require a different level if DC-coup ...
... noise bringing the total to about 24µV). This compares favorably with the nominal 16-bit LSB increment of 31µV, thus barely impacting the converter dynamic range. The common mode output voltage of the circuit in Figure 2 is fixed at 0.5V DC, though some loads may require a different level if DC-coup ...
Pure Class A operation delivers quality power: 60 watts
... While reflecting this tradition, the A-70 also implements latest technology such as the ultra low-noise instrumentation amplifier principle realized in a discrete configuration, along with optimized signal input and power amplification stages, resulting in an astonishing 127 dB S/N ratio (at -12 dB ...
... While reflecting this tradition, the A-70 also implements latest technology such as the ultra low-noise instrumentation amplifier principle realized in a discrete configuration, along with optimized signal input and power amplification stages, resulting in an astonishing 127 dB S/N ratio (at -12 dB ...
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.