MAX8647/MAX8648 Ultra-Efficient Charge Pumps for General Description
... Six White/RGB LEDs in 3mm x 3mm Thin QFN The MAX8647/MAX8648 drive up to six white LEDs or two sets of RGB LEDs with regulated constant current for display backlight and fun light applications. By utilizing an inverting charge pump and extremely lowdropout adaptive current regulators, these ICs achi ...
... Six White/RGB LEDs in 3mm x 3mm Thin QFN The MAX8647/MAX8648 drive up to six white LEDs or two sets of RGB LEDs with regulated constant current for display backlight and fun light applications. By utilizing an inverting charge pump and extremely lowdropout adaptive current regulators, these ICs achi ...
Physics 6B Electric Current - UCSB Campus Learning Assistance
... resistor in this circuit. Resistances are given as follows: R1=6Ω, R2=12Ω, R3=6Ω Before we can calculate the individual currents, we need to know how much current is supplied by the battery. So we need to find the equivalent resistance for the circuit. ...
... resistor in this circuit. Resistances are given as follows: R1=6Ω, R2=12Ω, R3=6Ω Before we can calculate the individual currents, we need to know how much current is supplied by the battery. So we need to find the equivalent resistance for the circuit. ...
Data Sheet General Description
... The AUR9807 selects the power source automatically. In the absence of the input source (AC adapter or USB), the battery is chosen to power the system. Under this circumstance, the AUR9807 consumes less than 5µ Ampere; the power path resistance from the battery to the system is only 40mΩ (3); all the ...
... The AUR9807 selects the power source automatically. In the absence of the input source (AC adapter or USB), the battery is chosen to power the system. Under this circumstance, the AUR9807 consumes less than 5µ Ampere; the power path resistance from the battery to the system is only 40mΩ (3); all the ...
Connecting Outputs in Series to Achieve High Voltage Transients
... Due to the three- phase AC input of AC sources is fed directly to bridge rectifiers, certain voltage level is required at the input terminal. When the voltage rating is 190-250Vac, it simply means that the voltage applied to each Bridge Rectifier must be 190 to 250 Vac . It doesn't matter if it’s fr ...
... Due to the three- phase AC input of AC sources is fed directly to bridge rectifiers, certain voltage level is required at the input terminal. When the voltage rating is 190-250Vac, it simply means that the voltage applied to each Bridge Rectifier must be 190 to 250 Vac . It doesn't matter if it’s fr ...
Opti Information
... The light should illuminate, and if it doesn’t there isn’t any power going to the optical sensor. The remaining test checks the various circuits individually. To see if the proper signals are being sent and received from both the distributor and PCM. If the light illuminated in the last test check f ...
... The light should illuminate, and if it doesn’t there isn’t any power going to the optical sensor. The remaining test checks the various circuits individually. To see if the proper signals are being sent and received from both the distributor and PCM. If the light illuminated in the last test check f ...
Frequently Asked Questions Solid-State Relays Frequently Asked
... Without current limiting circuitry SSR current is only limited by series and load resistances as well as its own on-resistance (Ron). Due to extensive power dissipation and heating, secondary breakdown can occur and an excessive current flows until the fault distinguishes. With current limiting circ ...
... Without current limiting circuitry SSR current is only limited by series and load resistances as well as its own on-resistance (Ron). Due to extensive power dissipation and heating, secondary breakdown can occur and an excessive current flows until the fault distinguishes. With current limiting circ ...
Novel 9-Steps Automatic Voltage Regulator based on Two Step
... designed transformer is used in one time. In other word, the remaining not used taps of multi-taps transformer become useless terminals. A different commercially available for domestic applications types of 1kVA Automatic Voltage Stabilizers brands are demonstrated in [3]. The study in [4] is focuse ...
... designed transformer is used in one time. In other word, the remaining not used taps of multi-taps transformer become useless terminals. A different commercially available for domestic applications types of 1kVA Automatic Voltage Stabilizers brands are demonstrated in [3]. The study in [4] is focuse ...
The creation of a rotating stator field using three-phase power
... and its frequency will drop. When the rotor revolves at the same speed and in the same direction as the rotating stator field, the induced voltage as well as its frequency will drop to zero.(the rotor is now at synchronous speed). Conversely, if the rotor is driven at synchronous speed, but in the o ...
... and its frequency will drop. When the rotor revolves at the same speed and in the same direction as the rotating stator field, the induced voltage as well as its frequency will drop to zero.(the rotor is now at synchronous speed). Conversely, if the rotor is driven at synchronous speed, but in the o ...
IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE)
... In most cases, the voltage of the dc side of the converter is assumed to be constant and the ac network is assumed to be balanced. However, fluctuations at various frequencies often occur on the dc side which usually appears as harmonics of the ac-side operating frequency. The most significant harmo ...
... In most cases, the voltage of the dc side of the converter is assumed to be constant and the ac network is assumed to be balanced. However, fluctuations at various frequencies often occur on the dc side which usually appears as harmonics of the ac-side operating frequency. The most significant harmo ...
Graduate Category: Engineering and Technology Degree Level: Ph.D Abstract ID# 1016
... A jitter increases as the required frequency increases in modern IC design ...
... A jitter increases as the required frequency increases in modern IC design ...
Understanding and Applying Current-Mode Control Theory
... For any mode of operation (peak, valley or emulated), the optimal slope of the ramp presented to the modulating comparator input is equal to the sum of the absolute values of the inductor upslope and down-slope scaled by the current-sense gain. This will cause any tendency toward subharmonic oscilla ...
... For any mode of operation (peak, valley or emulated), the optimal slope of the ramp presented to the modulating comparator input is equal to the sum of the absolute values of the inductor upslope and down-slope scaled by the current-sense gain. This will cause any tendency toward subharmonic oscilla ...
Calculation of Noise Resistance from Simultaneous Electrochemical
... A derivation of the noise resistance appropriate to locally stationary electrochemical noise measurements is presented. The equation for noise resistance, R~ = ~v/~, where the ~v and cr~values are the standard deviations of the voltage and current noise signals, is shown to be derivable from the low ...
... A derivation of the noise resistance appropriate to locally stationary electrochemical noise measurements is presented. The equation for noise resistance, R~ = ~v/~, where the ~v and cr~values are the standard deviations of the voltage and current noise signals, is shown to be derivable from the low ...
Solar PV Standard Plan – Simplified Microinverter and ACM
... of 10-A DC, installed on a roof of a one- or two-family dwelling or accessory structure. The photovoltaic system must interconnect to a single-phase AC service panel of 120/240 Vac with service panel bus bar rating of 225 A or less. This plan is not intended for bipolar systems, hybrid systems or sy ...
... of 10-A DC, installed on a roof of a one- or two-family dwelling or accessory structure. The photovoltaic system must interconnect to a single-phase AC service panel of 120/240 Vac with service panel bus bar rating of 225 A or less. This plan is not intended for bipolar systems, hybrid systems or sy ...
TPS51200 数据资料 dataSheet 下载
... ceramic capacitor to supply this transient charge. Provide more input capacitance as more output capacitance is used at VO. In general, use one-half of the COUT value for input. ...
... ceramic capacitor to supply this transient charge. Provide more input capacitance as more output capacitance is used at VO. In general, use one-half of the COUT value for input. ...
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.