R302 Receiver, made before Oct 2007
... been noted for. It uses triple-tuned circuits in the front end and excellent crystal and ceramic filters in the i-f with steep skirts for close channel spacing or repeater operation. The i-f selectivity, for instance, is down over 100dB at ±12 kHz away from the carrier, which is 4050 dB better than ...
... been noted for. It uses triple-tuned circuits in the front end and excellent crystal and ceramic filters in the i-f with steep skirts for close channel spacing or repeater operation. The i-f selectivity, for instance, is down over 100dB at ±12 kHz away from the carrier, which is 4050 dB better than ...
V-2
... • If there are more R, C, L elements in an AC circuit we can always, in principle, build appropriate differential or integral equations and solve them. The only problem is that these equations would be very complicated even in very simple situations. • There are, fortunately, several ways how to get ...
... • If there are more R, C, L elements in an AC circuit we can always, in principle, build appropriate differential or integral equations and solve them. The only problem is that these equations would be very complicated even in very simple situations. • There are, fortunately, several ways how to get ...
Ch 6
... (Av = 1), infinite input impedance (Zin = ), and zero output impedance (Zout = 0). The power gain would also be infinite (Ap = ) The “job” of a buffer amp is to prevent loading of a signal source. If a high-impedance signal source is connected to a low-impedance point in a circuit, most of the sig ...
... (Av = 1), infinite input impedance (Zin = ), and zero output impedance (Zout = 0). The power gain would also be infinite (Ap = ) The “job” of a buffer amp is to prevent loading of a signal source. If a high-impedance signal source is connected to a low-impedance point in a circuit, most of the sig ...
HT3213861389
... Abstract: The digital phase locked loop is a circuit that used frequently in modern integrated circuit design. A digital phase-locked loop (DPLL) is designed using 0.18 um CMOS process and a 3.3 V power supply. It operates in the frequency range 200 MHz–1 GHz. DPLL perform the fuction of generating ...
... Abstract: The digital phase locked loop is a circuit that used frequently in modern integrated circuit design. A digital phase-locked loop (DPLL) is designed using 0.18 um CMOS process and a 3.3 V power supply. It operates in the frequency range 200 MHz–1 GHz. DPLL perform the fuction of generating ...
A Wide Tuning Range Voltage-Controlled Ring Oscillator dedicated
... I. INTRODUCTION A voltage-controlled oscillator (VCO) is considered as one of the important building blocks in analog and digital circuits. For example, in modern microcircuits, feeding clocks into chips must be avoided due to the effect of stray capacitance at the pins of IC package. High-speed cir ...
... I. INTRODUCTION A voltage-controlled oscillator (VCO) is considered as one of the important building blocks in analog and digital circuits. For example, in modern microcircuits, feeding clocks into chips must be avoided due to the effect of stray capacitance at the pins of IC package. High-speed cir ...
Lecture 17
... voltage across the resistor is in phase with the current The instantaneous voltage across the inductor leads the current by 90° The instantaneous voltage across the capacitor lags the current by 90° ...
... voltage across the resistor is in phase with the current The instantaneous voltage across the inductor leads the current by 90° The instantaneous voltage across the capacitor lags the current by 90° ...
A state-of-the-art 2.3GHz Pre-amplifier
... Agilent call the device an Enhancement-mode Pseudomorphic High Electron Mobility Transistor, or EPHEMT. HEMTs have been around for some time now, and will be familiar to anybody who has built a microwave low noise amplifier (LNA). 'Pseudomorphic' is a development of the basic HEMT, and refers to the ...
... Agilent call the device an Enhancement-mode Pseudomorphic High Electron Mobility Transistor, or EPHEMT. HEMTs have been around for some time now, and will be familiar to anybody who has built a microwave low noise amplifier (LNA). 'Pseudomorphic' is a development of the basic HEMT, and refers to the ...
Exp3-OpAmpFreqRespon.. - MSU Engineering
... Consider a linear process with a sinusoidal input, whose output is observed. If input and output are examined together (Fig. 2), then the command input can be compared with the response output. For any linear system, Sinusoidal Response of a First Order Plant: Operational Amplifier Circuit ...
... Consider a linear process with a sinusoidal input, whose output is observed. If input and output are examined together (Fig. 2), then the command input can be compared with the response output. For any linear system, Sinusoidal Response of a First Order Plant: Operational Amplifier Circuit ...
1.1.5.A Circuit Theory - Hand Calculations
... The same is true for circuit analysis. Throughout this course you will be using Circuit Design Software (CDS) to test the circuits that you design. This software will always give an answer, whether it is right or wrong. The only way that you will be able to rely on these answers is if you have an un ...
... The same is true for circuit analysis. Throughout this course you will be using Circuit Design Software (CDS) to test the circuits that you design. This software will always give an answer, whether it is right or wrong. The only way that you will be able to rely on these answers is if you have an un ...
August - DVHRC
... Another idea for keeping the old weak 6XX tube in place and not tearing into the filament circuit is to use a source of B+ supply for the tube that is higher than what is normally supplied. Look for this higher voltage at the audio output screen grid, or even directly from the cathode of the power s ...
... Another idea for keeping the old weak 6XX tube in place and not tearing into the filament circuit is to use a source of B+ supply for the tube that is higher than what is normally supplied. Look for this higher voltage at the audio output screen grid, or even directly from the cathode of the power s ...
AD6IW HEMT MMIC Wideband LNA article and kit info
... unconditional stable, high reverse isolations, frequency coverage from VHF up to L band. Resistance to large input signals up to 27 dBm without destruction. The LNA was utilized with SPF-5122Z GaAs pHEMT MMIC device, from RFMD. ...
... unconditional stable, high reverse isolations, frequency coverage from VHF up to L band. Resistance to large input signals up to 27 dBm without destruction. The LNA was utilized with SPF-5122Z GaAs pHEMT MMIC device, from RFMD. ...
Part 1 Some Basic Ideas and Components :
... the potential divider (in this experiment, the loads are resistors). Using the circuit shown above, adjust the rheostat so that the voltage across S and B is 2 volts. Connect a 10 kΩ resistor across S and B. Note the reading of the voltmeter when this resistor is connected. (Note that the maximum re ...
... the potential divider (in this experiment, the loads are resistors). Using the circuit shown above, adjust the rheostat so that the voltage across S and B is 2 volts. Connect a 10 kΩ resistor across S and B. Note the reading of the voltmeter when this resistor is connected. (Note that the maximum re ...
Title (Example: design and simulation of a full adder)
... m minimum feature size and 4 m minimum overlap. The amplifier has an open loop voltage gain of 300, a common mode rejection of 10 and an open loop bandwidth of 15 MHz. The maximum output voltage swing is 15 V peak-to-peak for a power supply voltage of –25 V. The circuit was designed for a power su ...
... m minimum feature size and 4 m minimum overlap. The amplifier has an open loop voltage gain of 300, a common mode rejection of 10 and an open loop bandwidth of 15 MHz. The maximum output voltage swing is 15 V peak-to-peak for a power supply voltage of –25 V. The circuit was designed for a power su ...
The Experiences of a (Relatively) Young Ham with Vintage Radios
... in another just in case. I hunted up a proper resistor, a bit larger than 680 ohms, since I planned just to tack it across the existing 4700 in case that was a legitimate mod for VFO operation. The oscillator was still dead but checking around the very crowded terminal strip revealed a 0.01-uFD cera ...
... in another just in case. I hunted up a proper resistor, a bit larger than 680 ohms, since I planned just to tack it across the existing 4700 in case that was a legitimate mod for VFO operation. The oscillator was still dead but checking around the very crowded terminal strip revealed a 0.01-uFD cera ...
lecture10aa
... Apply this approach to the capacitor circuit above, where the voltage source has the value vS(t) = 4 cos(wt) volts. The phasor voltage VS is then purely real: VS = 4. The phasor current is I = VS/ZC = jwCVS = (wC)VSejp/2, where we use the fact that j = (-1)1/2 = ejp/2; thus, the current in a capacit ...
... Apply this approach to the capacitor circuit above, where the voltage source has the value vS(t) = 4 cos(wt) volts. The phasor voltage VS is then purely real: VS = 4. The phasor current is I = VS/ZC = jwCVS = (wC)VSejp/2, where we use the fact that j = (-1)1/2 = ejp/2; thus, the current in a capacit ...
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.