LTC3250-1.5/LTC3250-1.2 - High Efficiency, Low Noise
... (see “Ceramic Capacitor Selection Guidelines” section). If only 100mA or less of output current is required for the application the flying capacitor minimum can be reduced to 0.15µF. Ceramic Capacitor Selection Guidelines Capacitors of different materials lose their capacitance with higher temperatu ...
... (see “Ceramic Capacitor Selection Guidelines” section). If only 100mA or less of output current is required for the application the flying capacitor minimum can be reduced to 0.15µF. Ceramic Capacitor Selection Guidelines Capacitors of different materials lose their capacitance with higher temperatu ...
Evaluates: MAX1848 MAX1848 Evaluation Kit General Description Features
... 5) Turn on the VIN power supply and set it to 3.3V. 6) Turn on the VCTRL power supply, vary the VCTRL between 0 and 2V and observe the variation in brightness of the LEDs. 7) Verify that the output, VOUT is approximately 10V when the VCTRL power supply is 2V. 8) Vary the VIN power supply from 2.6V t ...
... 5) Turn on the VIN power supply and set it to 3.3V. 6) Turn on the VCTRL power supply, vary the VCTRL between 0 and 2V and observe the variation in brightness of the LEDs. 7) Verify that the output, VOUT is approximately 10V when the VCTRL power supply is 2V. 8) Vary the VIN power supply from 2.6V t ...
MAX1553/MAX1554 High-Efficiency, 40V Step-Up Converters for 2 to 10 White LEDs General Description
... The MAX1553 has a 480mA inductor current limit and can drive up to six LEDs at 20mA or nine LEDs at 15mA. Inductor values from 4.7µH to 47µH work satisfactorily. Larger values provide the best efficiency while small inductor values allow the smallest inductor size. A good choice for best efficiency ...
... The MAX1553 has a 480mA inductor current limit and can drive up to six LEDs at 20mA or nine LEDs at 15mA. Inductor values from 4.7µH to 47µH work satisfactorily. Larger values provide the best efficiency while small inductor values allow the smallest inductor size. A good choice for best efficiency ...
AM transmitters and receivers
... frequency. Notice how the first mixer has an oscillator which is crystal controlled. This is possible since the conversion from the first IF frequency to the second IF frequency is always the same, requiring no adjustment of the first oscillator. The crystal oscillator also provides high frequency ...
... frequency. Notice how the first mixer has an oscillator which is crystal controlled. This is possible since the conversion from the first IF frequency to the second IF frequency is always the same, requiring no adjustment of the first oscillator. The crystal oscillator also provides high frequency ...
ADS1201 数据资料 dataSheet 下载
... The modulator topology is fundamentally a 2nd-order, chargebalancing A/D converter, as the one conceptualized in Figure 4. The analog input voltage and the output of the 1-bit DAC is differentiated, providing an analog voltage at X2 and X3. The voltage at X2 and X3 are presented to their individual ...
... The modulator topology is fundamentally a 2nd-order, chargebalancing A/D converter, as the one conceptualized in Figure 4. The analog input voltage and the output of the 1-bit DAC is differentiated, providing an analog voltage at X2 and X3. The voltage at X2 and X3 are presented to their individual ...
objectives
... The material that a wire is made of. Some materials are better conductors than others and offer less resistance to the flow of charge. Silver is one of the best conductors but is never used in wires of household circuits due to its cost. Copper and aluminum are among the least expensive materials wi ...
... The material that a wire is made of. Some materials are better conductors than others and offer less resistance to the flow of charge. Silver is one of the best conductors but is never used in wires of household circuits due to its cost. Copper and aluminum are among the least expensive materials wi ...
MAX4003EVKIT.pdf
... The MAX4003 can be replaced with the MAX4000 to allow an input range of -45dBm to 0dBm into 50Ω. The modifications required are as follows: 1) Replace U1 with a MAX4000EUA. Evaluating the MAX4001 or MAX4002 The MAX4003 can be replaced with the MAX4001 to allow an input range of -35dBm to +10dBm in 5 ...
... The MAX4003 can be replaced with the MAX4000 to allow an input range of -45dBm to 0dBm into 50Ω. The modifications required are as follows: 1) Replace U1 with a MAX4000EUA. Evaluating the MAX4001 or MAX4002 The MAX4003 can be replaced with the MAX4001 to allow an input range of -35dBm to +10dBm in 5 ...
22_LectureOutlines_PRS
... 3. A battery makes a circuit with a lightbulb as shown. Two compasses are near the wires before and after the bulb in the circuit. Which compass experiences a larger deflection? A. Compass 1 experiences a larger deflection. B. Compass 2 experiences a larger deflection. C. Both compasses experience t ...
... 3. A battery makes a circuit with a lightbulb as shown. Two compasses are near the wires before and after the bulb in the circuit. Which compass experiences a larger deflection? A. Compass 1 experiences a larger deflection. B. Compass 2 experiences a larger deflection. C. Both compasses experience t ...
45MHz to 650MHz, Integrated IF VCOs with Differential Output General Description Features
... The inductance value required for the desired operating frequency may not necessarily coincide with a standard-value SMT inductor, which typically increases size in ~1.2x steps. In such cases, the inductance must be constructed from two inductors, LF1 and LF2, in order to achieve the desired inducta ...
... The inductance value required for the desired operating frequency may not necessarily coincide with a standard-value SMT inductor, which typically increases size in ~1.2x steps. In such cases, the inductance must be constructed from two inductors, LF1 and LF2, in order to achieve the desired inducta ...
Cascaded H Bridge Multilevel Inverter Booster As A
... lesser number of semiconductor devices for generating the desired level of voltage when compared to the other two topologies[3]. When the number of semiconductor devices decreases the switching losses also decrease in direct proportion and therefore the efficiency of the entire system increases. For ...
... lesser number of semiconductor devices for generating the desired level of voltage when compared to the other two topologies[3]. When the number of semiconductor devices decreases the switching losses also decrease in direct proportion and therefore the efficiency of the entire system increases. For ...
Design of Third-Order Square-Root-Domain Filters Using
... [28]. A third-order low-pass elliptic filter using a square-rootdomain differentiator is presented in [29]. A third-order elliptic low-pass LC filter is proposed in [30]. A realization of thirdorder active switched-capacitor filter is proposed in [31]. In this study, square-root-domain third order l ...
... [28]. A third-order low-pass elliptic filter using a square-rootdomain differentiator is presented in [29]. A third-order elliptic low-pass LC filter is proposed in [30]. A realization of thirdorder active switched-capacitor filter is proposed in [31]. In this study, square-root-domain third order l ...
Using the MP6530 Family of Pre
... power MOSFETs, which results in the fastest possible turn-on and turn-off times. Adding an external series resistance (typically between 10 - 100Ω) limits the current that charges and discharges the gate of the MOSFET, which slows down the turn-on and turn-off times. Sometimes, this is desirable for ...
... power MOSFETs, which results in the fastest possible turn-on and turn-off times. Adding an external series resistance (typically between 10 - 100Ω) limits the current that charges and discharges the gate of the MOSFET, which slows down the turn-on and turn-off times. Sometimes, this is desirable for ...
A Motor Designer Looks at Positive Temperature - Purdue e-Pubs
... torque which is available when the motor is optimized for peak running performance. Therefore, a PTCR would offer little or no opportunity for airconditioning motor redesign for higher efficiency. Its place in air conditioning seems to be as a "hard start" accessory, or to replace a start capacitor ...
... torque which is available when the motor is optimized for peak running performance. Therefore, a PTCR would offer little or no opportunity for airconditioning motor redesign for higher efficiency. Its place in air conditioning seems to be as a "hard start" accessory, or to replace a start capacitor ...
FST3257 Quad 2:1 Multiplexer / Demultiplexer Bus Switch FST3257 — Quad 2:
... VIN=VCC or GND, IOUT=0, ...
... VIN=VCC or GND, IOUT=0, ...
A/D Converter Specifications (Cont.)
... protected from dangerous voltages such as static charges or reversed polarity voltages. Amplification: Rarely does the transducer produce the voltage or current needed by the A/D. The amplifier is designed so that the full-scale signal from the analog results in a full-scale signal to the A/D. Bandw ...
... protected from dangerous voltages such as static charges or reversed polarity voltages. Amplification: Rarely does the transducer produce the voltage or current needed by the A/D. The amplifier is designed so that the full-scale signal from the analog results in a full-scale signal to the A/D. Bandw ...
LHC_IR_quads_Heaters
... voltage to ground -Outer layer heaters are just as effective as interlayer heater. Outer layer heaters chosen for ease of installation -Reducing insulation doesn’t seem to have much effect (or small compared to other variables -Increasing peak power is more important than longitudinal resistance: us ...
... voltage to ground -Outer layer heaters are just as effective as interlayer heater. Outer layer heaters chosen for ease of installation -Reducing insulation doesn’t seem to have much effect (or small compared to other variables -Increasing peak power is more important than longitudinal resistance: us ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.