SG-2020 Transceiver
... The SGC factory test procedures as well as the test procedures detailed in the ARRL Handbook chapter 26 can be used to fully measure the performance of the radio. The following are simple tests which do not require laboratory test equipment and can be used to determine if the unit is generally opera ...
... The SGC factory test procedures as well as the test procedures detailed in the ARRL Handbook chapter 26 can be used to fully measure the performance of the radio. The following are simple tests which do not require laboratory test equipment and can be used to determine if the unit is generally opera ...
PART B UNIT I (i). State and prove Demorgan`s law (6) (EI May 2007
... 16. Design a 4 bit up/down ripple counter with a control for up/down counting. (EIMay/June 2013) 17. (i) Draw and explain the working of 4 bit up/down synchronous counter.(12) (ii).Give the excitation table for T flip flop (4) (EI Nov/Dec 2013) 18. (i)Design a synchronous counter with states 0,1,2,3 ...
... 16. Design a 4 bit up/down ripple counter with a control for up/down counting. (EIMay/June 2013) 17. (i) Draw and explain the working of 4 bit up/down synchronous counter.(12) (ii).Give the excitation table for T flip flop (4) (EI Nov/Dec 2013) 18. (i)Design a synchronous counter with states 0,1,2,3 ...
LEVEL MONITOR D A TA SHEET F173 - LEVEL MONITOR
... or mass. • Explosion/flame proof available. • Full Modbus communication RS232/485/TTL. • Loop or battery powered, 8 - 24V AC/DC or 115 - 230V AC power supply. • Sensor supply 3 / 8.2 / 12 / 24V DC. ...
... or mass. • Explosion/flame proof available. • Full Modbus communication RS232/485/TTL. • Loop or battery powered, 8 - 24V AC/DC or 115 - 230V AC power supply. • Sensor supply 3 / 8.2 / 12 / 24V DC. ...
MAX3238E/MAX3248E +3.0V to +5.5V, 10nA, 250kbps RS-232 Transceivers General Description
... with popular software for communicating with personal computers. The MAX3238E and the MAX3248E differ only in their input logic thresholds. The MAX3238E has standard logic thresholds, while the MAX3248E has low-level logic thresholds of 0.6V to 1.2V, which are ideal for 1.8V systems. The transmitter ...
... with popular software for communicating with personal computers. The MAX3238E and the MAX3248E differ only in their input logic thresholds. The MAX3238E has standard logic thresholds, while the MAX3248E has low-level logic thresholds of 0.6V to 1.2V, which are ideal for 1.8V systems. The transmitter ...
pdf manual - Acoustic Dimension
... If the DAC Chip has a so-called “voltage” output you can keep the original solid state analogue stage connected and run it and the Universal Tube Output Stage in parallel. If the DAC Chip has a so-called “current” output you must disconnect the original solid state analogue stage from the DAC. This ...
... If the DAC Chip has a so-called “voltage” output you can keep the original solid state analogue stage connected and run it and the Universal Tube Output Stage in parallel. If the DAC Chip has a so-called “current” output you must disconnect the original solid state analogue stage from the DAC. This ...
Lecture 11: Symmetrical faults
... The AC current flowing in the generator during the subtransient period is called the subtransient current and is denoted by I”. This current is caused by the damper windings of synchronous machines. The time constant of the subtransient current is denoted by T” and it can be determined from the slop ...
... The AC current flowing in the generator during the subtransient period is called the subtransient current and is denoted by I”. This current is caused by the damper windings of synchronous machines. The time constant of the subtransient current is denoted by T” and it can be determined from the slop ...
To Filter or Divert?
... Surge Filters Surge filters are connected in series. They employ three-stage protection consisting of surge diverters at the input and output, and a low-pass LC filter in the middle. The low pass filter not only suppresses surges, but also provides some filtering against harmonic noise. In the event ...
... Surge Filters Surge filters are connected in series. They employ three-stage protection consisting of surge diverters at the input and output, and a low-pass LC filter in the middle. The low pass filter not only suppresses surges, but also provides some filtering against harmonic noise. In the event ...
BRAKE LIGHT FLASHER CIRCUIT circuit uses a Motorola
... mode and oscillates at about 3 pulses per second; this drives a Power MOSFET switch in series with the brake light wiring. The length of the flashing period is set by the second 555 timer (U1) operating in a monostable mode, as a one shot. This chip disables the oscillations of the multi-vibrator ch ...
... mode and oscillates at about 3 pulses per second; this drives a Power MOSFET switch in series with the brake light wiring. The length of the flashing period is set by the second 555 timer (U1) operating in a monostable mode, as a one shot. This chip disables the oscillations of the multi-vibrator ch ...
AD7453 数据手册DataSheet下载
... Chip Select. Active low logic input. This input provides the dual function of initiating a conversion on the AD7453 and framing the serial data transfer. Serial Data. Logic output. The conversion result from the AD7453 is provided on this output as a serial data stream. The bits are clocked out on t ...
... Chip Select. Active low logic input. This input provides the dual function of initiating a conversion on the AD7453 and framing the serial data transfer. Serial Data. Logic output. The conversion result from the AD7453 is provided on this output as a serial data stream. The bits are clocked out on t ...
Single Transistor Crystal Oscillator Circuits
... Negative Resistance at the frequency of oscillation (necessary to over come the crystals Equivalent Series Resistance), an initial gain in excess of one (to allow oscillator startup) which drops to unity once the oscillation starts, and is then subsequently stabilised by either the voltage limiting ...
... Negative Resistance at the frequency of oscillation (necessary to over come the crystals Equivalent Series Resistance), an initial gain in excess of one (to allow oscillator startup) which drops to unity once the oscillation starts, and is then subsequently stabilised by either the voltage limiting ...
user options
... This development board uses option selection jumpers. A jumper is a plastic shunt that connects 2 terminals electrically. Terminology for application of the option jumpers is as follows: Jumper on, in, or installed - jumper is installed such that 2 pins are connected together. Jumper off, out, or id ...
... This development board uses option selection jumpers. A jumper is a plastic shunt that connects 2 terminals electrically. Terminology for application of the option jumpers is as follows: Jumper on, in, or installed - jumper is installed such that 2 pins are connected together. Jumper off, out, or id ...
HEF4046B Phase-locked loop
... (R2). Resistor R1 and capacitor C1 determine the frequency range of the VCO, while resistor R2 enables the VCO to have a frequency off-set if required. The high input impedance of the VCO simplifies the design of low-pass filters; it permits the designer a wide choice of resistor/capacitor ranges. I ...
... (R2). Resistor R1 and capacitor C1 determine the frequency range of the VCO, while resistor R2 enables the VCO to have a frequency off-set if required. The high input impedance of the VCO simplifies the design of low-pass filters; it permits the designer a wide choice of resistor/capacitor ranges. I ...
Design and Simulation of Frequency Divider by Negative Differential
... capacitance Ctot, and the input period. At low input frequency, charges sufficient to switch the MOS-BJT-NDR are supplied to the output capacitance during a cycle of the input. However, when the input frequency increases, the charges supplied to the capacitance during a cycle decrease due to the sho ...
... capacitance Ctot, and the input period. At low input frequency, charges sufficient to switch the MOS-BJT-NDR are supplied to the output capacitance during a cycle of the input. However, when the input frequency increases, the charges supplied to the capacitance during a cycle decrease due to the sho ...
SN75LVCP412CD 数据资料 dataSheet 下载
... Cable detect mode (for this mode to be active PS and EN must be tied H via a 4.7kΩ or both pins left as NC. Device must be placed < 2" (or <5cm) from eSATA connector). To use this feature CH 1 input must be connected to SATA host while CH 2 input to eSATA connector. After power up device sets CD = 0 ...
... Cable detect mode (for this mode to be active PS and EN must be tied H via a 4.7kΩ or both pins left as NC. Device must be placed < 2" (or <5cm) from eSATA connector). To use this feature CH 1 input must be connected to SATA host while CH 2 input to eSATA connector. After power up device sets CD = 0 ...
M48T512Y
... life lithium button cell in a single package. Figure 3 on page 6 illustrates the static memory array and the quartz controlled clock oscillator. The clock locations contain the year, month, date, day, hour, minute, and second in 24 hour BCD format. Corrections for 28, 29 (leap year - compliant until ...
... life lithium button cell in a single package. Figure 3 on page 6 illustrates the static memory array and the quartz controlled clock oscillator. The clock locations contain the year, month, date, day, hour, minute, and second in 24 hour BCD format. Corrections for 28, 29 (leap year - compliant until ...
Switched-mode power supply
A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.