Collins KWM-380 owner`s manual 2nd edition 1 January 1981
... types of antennas, their characteristics, and installation information cannot be covered in this manual. A number of excellent reference works on antennas are available. The KWM-380 is designed to operate into a nonreactive rf load of 50 ohms. Impedance mismatches producing vswr's lower than 2:1 are ...
... types of antennas, their characteristics, and installation information cannot be covered in this manual. A number of excellent reference works on antennas are available. The KWM-380 is designed to operate into a nonreactive rf load of 50 ohms. Impedance mismatches producing vswr's lower than 2:1 are ...
179 The priority on usage of any amateur radio repeater is
... What is the primary source of noise that can be heard in a VHF/UHF-band receiver with an antenna connected? a) b) c) d) ...
... What is the primary source of noise that can be heard in a VHF/UHF-band receiver with an antenna connected? a) b) c) d) ...
Feasibility study
... To be able to reach specified gm for the minimum drain current (Id), M0 ought to operate in weak inversion or sub-threshold mode. That means VgsMo has to be shifted below the threshold along with scaling the transistor up in such a way that W/L ratio increases. For a CMOS transistor, there is limit ...
... To be able to reach specified gm for the minimum drain current (Id), M0 ought to operate in weak inversion or sub-threshold mode. That means VgsMo has to be shifted below the threshold along with scaling the transistor up in such a way that W/L ratio increases. For a CMOS transistor, there is limit ...
LM1889 TV Video Modulator
... 7, 8 and 9. The signal inputs (pins 12, 13) to both modulators are common, but removing the power supply from an RF oscillator tank circuit will also disable that modulator. As with the chrominance modulators, it is the offset between the two signal input pins that determines the level of RF carrier ...
... 7, 8 and 9. The signal inputs (pins 12, 13) to both modulators are common, but removing the power supply from an RF oscillator tank circuit will also disable that modulator. As with the chrominance modulators, it is the offset between the two signal input pins that determines the level of RF carrier ...
Qucs - A Tutorial
... To make valid comparisons of the circuits, you need a common parameter related to the biasing for the X axis. The ratio of the collector current to the bias current in R1 works. This ratio is common to the circuits and reflects how stiff the biasing is. To show realistic conditions, the data also in ...
... To make valid comparisons of the circuits, you need a common parameter related to the biasing for the X axis. The ratio of the collector current to the bias current in R1 works. This ratio is common to the circuits and reflects how stiff the biasing is. To show realistic conditions, the data also in ...
APX-100 amplifier The BEAG is a successful product with a 1970s
... The bias voltage is adjusted on potentiometer P4 and differences between anode voltage is adjusted on potentiometer P3. The making of a new output transformer can begin. A core of type SM102b is used. The order of windings can be seen in figure 3. ...
... The bias voltage is adjusted on potentiometer P4 and differences between anode voltage is adjusted on potentiometer P3. The making of a new output transformer can begin. A core of type SM102b is used. The order of windings can be seen in figure 3. ...
7-i
... result in unequal IMD3 amplitudes at 20, - 0,and 20, - 0,. This scenario is graphically demonstrated in Figure 4, where the nonlinear current components are represented by vectors to highlight their interactions. In this example, the angle between vectors 0 and [Oes]is less than that between 8 and C ...
... result in unequal IMD3 amplitudes at 20, - 0,and 20, - 0,. This scenario is graphically demonstrated in Figure 4, where the nonlinear current components are represented by vectors to highlight their interactions. In this example, the angle between vectors 0 and [Oes]is less than that between 8 and C ...
Sample-and-Hold Design Eric Sorensen March 16, 2012
... output buffer was initially set at 2.5mA, but the output impedance of the circuit was too low so it was increased to 5mA. The input buffer operates with collector currents of 2.5mA. ...
... output buffer was initially set at 2.5mA, but the output impedance of the circuit was too low so it was increased to 5mA. The input buffer operates with collector currents of 2.5mA. ...
AND8160/D Compandor Cookbook
... CRECT acts as the rectifier’s filter cap and directly affects the response time of the circuit. There is a trade-off, though, between fast attack and decay times and distortion. The time constant is: 10 k × CRECT. The total harmonic distortion (THD) is approximated by: ...
... CRECT acts as the rectifier’s filter cap and directly affects the response time of the circuit. There is a trade-off, though, between fast attack and decay times and distortion. The time constant is: 10 k × CRECT. The total harmonic distortion (THD) is approximated by: ...
Technics_Pro_1980 - Preservation Sound
... the S/N ratio would be decided only by the resistance caused when input is terminated. Assuming that this resistance amounts to 2.5 ohms, equivalent noise voltage at the input would therelore come to -157d8V. The SU9070 pre preamp's -157dBV figure is astonishingly close to this ideal. tnput sensitiv ...
... the S/N ratio would be decided only by the resistance caused when input is terminated. Assuming that this resistance amounts to 2.5 ohms, equivalent noise voltage at the input would therelore come to -157d8V. The SU9070 pre preamp's -157dBV figure is astonishingly close to this ideal. tnput sensitiv ...
Integer N Frequency Synthesizer using Phase Lock Loop
... phase difference between the two signals, it generates an output voltage, which is proportional to the phase error of the two signals. This output voltage passes through the loop filter and then as an input to the voltage Controlled oscillator (VCO) controls the output frequency. Due to this self co ...
... phase difference between the two signals, it generates an output voltage, which is proportional to the phase error of the two signals. This output voltage passes through the loop filter and then as an input to the voltage Controlled oscillator (VCO) controls the output frequency. Due to this self co ...
80m Receiver Version 4
... And, as described below, it is also used as ab attenuator. The next stage is an SA612 double-balanced mixer. It also contains the first oscillator needed to convert the 3.5 MHz signal to 455 kHz. The oscillator coil is a fixed inductance choke. Two cascaded ceramic filters provide the required selec ...
... And, as described below, it is also used as ab attenuator. The next stage is an SA612 double-balanced mixer. It also contains the first oscillator needed to convert the 3.5 MHz signal to 455 kHz. The oscillator coil is a fixed inductance choke. Two cascaded ceramic filters provide the required selec ...
Electrical, Electronic and Communications Engineering Technology
... Demonstrate an understanding of State and School safety regulations. Practice safety techniques for electronics work. Demonstrate an understanding of proper fire drill procedures. Research hazardous chemical safety information in the home. ...
... Demonstrate an understanding of State and School safety regulations. Practice safety techniques for electronics work. Demonstrate an understanding of proper fire drill procedures. Research hazardous chemical safety information in the home. ...
Wireless Media
... Microwave frequency range highly directional beams are possible Point-to-point transmission Used also in satellite communications ...
... Microwave frequency range highly directional beams are possible Point-to-point transmission Used also in satellite communications ...
Bootstrapping a Phase Locked Loop for Better Performance
... Another application for the bootstrapped PLL is the combining of three oscillators to slow the occasional frequency steps exhibited by many precision crystals. Sudden steps of a few parts pre billion can destabilize certain timing receivers. Previous schemes have combined three free-running oscillat ...
... Another application for the bootstrapped PLL is the combining of three oscillators to slow the occasional frequency steps exhibited by many precision crystals. Sudden steps of a few parts pre billion can destabilize certain timing receivers. Previous schemes have combined three free-running oscillat ...
Modeion - OEZ sro
... ► All circuit breakers already contain connecting sets BC160 – direct connection of Cu/Al cables of cross-section 2.5 to 95 mm2 ...
... ► All circuit breakers already contain connecting sets BC160 – direct connection of Cu/Al cables of cross-section 2.5 to 95 mm2 ...
AN781 - Silicon Labs
... HCSL output clock from a Silicon Labs PCIe clock generator or buffer device into a LVPECL, LVDS, or CML formatted clock. These optional terminations are particularly useful in applications that require both 100 MHz PCIe output clocks, as well as 100 MHz LVDS, LVPECL, or CML output clocks for FPGAs, ...
... HCSL output clock from a Silicon Labs PCIe clock generator or buffer device into a LVPECL, LVDS, or CML formatted clock. These optional terminations are particularly useful in applications that require both 100 MHz PCIe output clocks, as well as 100 MHz LVDS, LVPECL, or CML output clocks for FPGAs, ...
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.