Power-Efficient Impedance-Modulation Wireless Data Links for Biomedical Implants
... great advantage of dissipating almost no power on the transmitting (load) side of the link. This advantage allows an implanted system to transmit data while keeping its power consumption to a minimum; most of the power is dissipated by the external unit. C. An Alternative Topology A practical proble ...
... great advantage of dissipating almost no power on the transmitting (load) side of the link. This advantage allows an implanted system to transmit data while keeping its power consumption to a minimum; most of the power is dissipated by the external unit. C. An Alternative Topology A practical proble ...
The Pyramidal Electric Transducer
... output (Figure 8). For this, a new coilform was made that covered over two-thirds of coil 2 in length, with a 1.3 mm thick, dielectric-filled space left between the coilform and coil 1. Repeating the swept signal analysis of Figure 8, we see that coil 2 draws power from coil 1 at a frequency of abo ...
... output (Figure 8). For this, a new coilform was made that covered over two-thirds of coil 2 in length, with a 1.3 mm thick, dielectric-filled space left between the coilform and coil 1. Repeating the swept signal analysis of Figure 8, we see that coil 2 draws power from coil 1 at a frequency of abo ...
Ask the experts Natural Disasters
... series or parallel and leads are brought out to the standard conduit box. A sec- ...
... series or parallel and leads are brought out to the standard conduit box. A sec- ...
Unijunction Transistor Symbol and Construction
... 3. A small reverse saturation current, called dark current, flows through the phototransistor even in the absence of light whose value increases with an increase in the value of temperature, a property identical to that exhibited by the ordinary transistors. 4. Phototransistors are prone to permanen ...
... 3. A small reverse saturation current, called dark current, flows through the phototransistor even in the absence of light whose value increases with an increase in the value of temperature, a property identical to that exhibited by the ordinary transistors. 4. Phototransistors are prone to permanen ...
spatial light modulators
... 1 x 640 – This linear SLM offers higher resolution, high 1 x 640 This linear SLM offers higher resolution, ...
... 1 x 640 – This linear SLM offers higher resolution, high 1 x 640 This linear SLM offers higher resolution, ...
Training Manual on Inverter Technology
... Since 1940 inverter has appeared and the first uses were in the Second World War. This time together with a development of electronic lamps, the need of high DC voltage had been requested. During the time of world war’s II when Navy Ships ran on DC power only then DC source was urgently needed. That ...
... Since 1940 inverter has appeared and the first uses were in the Second World War. This time together with a development of electronic lamps, the need of high DC voltage had been requested. During the time of world war’s II when Navy Ships ran on DC power only then DC source was urgently needed. That ...
Sensorless control of induction motor drives equipped with inverter
... inverter consists of sharp-edged voltage pulses, which cause unwanted effects in the motor drive. Sudden alterations of the voltage produce high voltage stresses in motor insulations and may cause bearing currents [1], [2]. Harmonics at the switching frequency and its multiples give rise to addition ...
... inverter consists of sharp-edged voltage pulses, which cause unwanted effects in the motor drive. Sudden alterations of the voltage produce high voltage stresses in motor insulations and may cause bearing currents [1], [2]. Harmonics at the switching frequency and its multiples give rise to addition ...
AN00055 STARplug efficient low power supply
... The internal regulation voltage (Vreg_intern) is equal to the difference between the external regulation voltage and the internal voltage source (2.5 V) multiplied by 10. This internal regulation voltage is compared with the voltage of the oscillator. As soon as the oscillator voltage is lower than ...
... The internal regulation voltage (Vreg_intern) is equal to the difference between the external regulation voltage and the internal voltage source (2.5 V) multiplied by 10. This internal regulation voltage is compared with the voltage of the oscillator. As soon as the oscillator voltage is lower than ...
pptx
... C_comp, unless C_comp is optionally split into component attached to the other reference voltages. The DUT die shows all of the available power and ground pin reference voltage terminals. For [Model]s that do not specify [Pulldown Reference] or [GND Clamp Reference] then the reference for the V_fixt ...
... C_comp, unless C_comp is optionally split into component attached to the other reference voltages. The DUT die shows all of the available power and ground pin reference voltage terminals. For [Model]s that do not specify [Pulldown Reference] or [GND Clamp Reference] then the reference for the V_fixt ...
MAX115/MAX116 2x4-Channel, Simultaneous-Sampling 12-Bit ADCs ________________General Description
... 2µs, successive-approximation analog-to-digital converter (ADC), a +2.5V reference, a buffered reference input, and a bank of four simultaneous-sampling T/H amplifiers that preserve the relative phase information of the sampled inputs. The MAX115/MAX116 have two multiplexed inputs for each T/H, allo ...
... 2µs, successive-approximation analog-to-digital converter (ADC), a +2.5V reference, a buffered reference input, and a bank of four simultaneous-sampling T/H amplifiers that preserve the relative phase information of the sampled inputs. The MAX115/MAX116 have two multiplexed inputs for each T/H, allo ...
Sensorless Rotor Temperature Estimation of Permanent Magnet
... high intrinsic coercivity (Hci) and big maximum energy product (BHmax). Thus, PMSMs manufactured with NdFeBmagnets reveal comparatively high power density. The motor size is significantly reduced by maintaining an excellent torque capability. A drawback of the magnet is its relatively low resistivit ...
... high intrinsic coercivity (Hci) and big maximum energy product (BHmax). Thus, PMSMs manufactured with NdFeBmagnets reveal comparatively high power density. The motor size is significantly reduced by maintaining an excellent torque capability. A drawback of the magnet is its relatively low resistivit ...
Sep 1992 Design Techniques for Electrostatic Discharge Protection
... also well represented in this issue with articles on the new LT1112/1114 dual and quad surface-mountable op amps. Also new in the world of op amps is a surface-mount version of the industry’s lowest noise op amp, the LT1028. In addition, the new LT1128 is a unitygain-stable version of the LT1028, wh ...
... also well represented in this issue with articles on the new LT1112/1114 dual and quad surface-mountable op amps. Also new in the world of op amps is a surface-mount version of the industry’s lowest noise op amp, the LT1028. In addition, the new LT1128 is a unitygain-stable version of the LT1028, wh ...
Modular Cascaded H-Bridge Multilevel PV Inverter by
... To solve the PV mismatch issue, a control scheme with individual MPPT control and modulation compensation is proposed. The details of the control scheme will be discussed in the next section. A. Distributed MPPT Control Keeping in mind the end goal to dispense with the antagonistic impact of the con ...
... To solve the PV mismatch issue, a control scheme with individual MPPT control and modulation compensation is proposed. The details of the control scheme will be discussed in the next section. A. Distributed MPPT Control Keeping in mind the end goal to dispense with the antagonistic impact of the con ...
Designing an RF Remote Control
... cost, which is influenced by many factors besides component costs, including labor, inventory, test, and manufacturing yield. By far, the dominant low-cost RF remote control solution on the market today uses an MCU and a surface acoustic wave (SAW)-based RF transmitter as shown in figure 4. The wide ...
... cost, which is influenced by many factors besides component costs, including labor, inventory, test, and manufacturing yield. By far, the dominant low-cost RF remote control solution on the market today uses an MCU and a surface acoustic wave (SAW)-based RF transmitter as shown in figure 4. The wide ...
CMOS Device Model
... • Intrinsic noise: Unpredictable microscopic events inherent in the device/circuit; can be reduced, but never eliminated. •Noise is especially important to consider when designing low-power systems because the signal levels (typically voltages or currents) are small. ...
... • Intrinsic noise: Unpredictable microscopic events inherent in the device/circuit; can be reduced, but never eliminated. •Noise is especially important to consider when designing low-power systems because the signal levels (typically voltages or currents) are small. ...
ISSCC 2011 slides - Massachusetts Institute of Technology
... Leverage voltage scaling with resolution for CV2 savings ...
... Leverage voltage scaling with resolution for CV2 savings ...
passive techniques for reducing input current
... The IEEE 519-1992 relies strongly on the definition of the point of common coupling or PCC. The PCC from the power utility point of view will usually be the point where power comes into the establishment (i.e., point of metering). However, the IEEE 5191992 document also suggests that, “within an ind ...
... The IEEE 519-1992 relies strongly on the definition of the point of common coupling or PCC. The PCC from the power utility point of view will usually be the point where power comes into the establishment (i.e., point of metering). However, the IEEE 5191992 document also suggests that, “within an ind ...
T.TSS Meridian Gyros-6pp - Oceanology International
... The Meridian gyrocompass product range is suitable for the ever-changing needs of a modern integrated navigation bridge system. This includes highly accurate performance with low cost of ownership and system flexibility. Due to the Meridian’s small size and fast settle time of less than 45 minutes, ...
... The Meridian gyrocompass product range is suitable for the ever-changing needs of a modern integrated navigation bridge system. This includes highly accurate performance with low cost of ownership and system flexibility. Due to the Meridian’s small size and fast settle time of less than 45 minutes, ...
Low-distortion low-voltage operational transconductance amplifier
... Proposed OTA: Fig. 1 shows the new OTA configuration. The presented configuration uses a differential pair in the input stage with source degeneration. The output stages consist of four current mirrors. The tail current source is taken over by a pair of dynamic current mirrors based on the FVF structu ...
... Proposed OTA: Fig. 1 shows the new OTA configuration. The presented configuration uses a differential pair in the input stage with source degeneration. The output stages consist of four current mirrors. The tail current source is taken over by a pair of dynamic current mirrors based on the FVF structu ...
MAX1812 Dual USB Switch with Fault Blanking General Description Features
... (Table 1). When ON_ is high, the switch is off, and the residual output current is dominated by leakage. When ON_ is low, the switch can supply a continuous output current of at least 500mA. When the output current exceeds the 0.9A (typ) threshold, the MAX1812 will limit the current, depending upon ...
... (Table 1). When ON_ is high, the switch is off, and the residual output current is dominated by leakage. When ON_ is low, the switch can supply a continuous output current of at least 500mA. When the output current exceeds the 0.9A (typ) threshold, the MAX1812 will limit the current, depending upon ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.