MAX8570–MAX8575 High-Efficiency LCD Boost with True Shutdown General Description
... tiny surface-mount components. Three current-limit options are available. The MAX8570 and MAX8572 use a 110mA current limit to reduce ripple and component size in low-current applications. For high-power requirements, the MAX8574 and MAX8575 use a 500mA current limit and supply up to 20mA at 20V. Th ...
... tiny surface-mount components. Three current-limit options are available. The MAX8570 and MAX8572 use a 110mA current limit to reduce ripple and component size in low-current applications. For high-power requirements, the MAX8574 and MAX8575 use a 500mA current limit and supply up to 20mA at 20V. Th ...
BA4101300306
... strive towards increased switching frequencies in order to omit the audible noise and reduce the output current harmonic content. For such high switching frequencies, the switching losses dominate, at least if insulated gate bipolar transistor (IGBT) technology is employed. IGBT technology is the mo ...
... strive towards increased switching frequencies in order to omit the audible noise and reduce the output current harmonic content. For such high switching frequencies, the switching losses dominate, at least if insulated gate bipolar transistor (IGBT) technology is employed. IGBT technology is the mo ...
VSWR and Antenna Tuners
... • Play it safe and un-key before turning the inductor switch...un-key first....turn the switch...key up....repeat as needed until lowest SWR and maximum output. Be gentle to your radio; keep the key-down periods as short as possible. Depending on the impedance at the antenna input (and the overall d ...
... • Play it safe and un-key before turning the inductor switch...un-key first....turn the switch...key up....repeat as needed until lowest SWR and maximum output. Be gentle to your radio; keep the key-down periods as short as possible. Depending on the impedance at the antenna input (and the overall d ...
CIRCUITS LABORATORY Experiment 8 DC Power Supplies
... voltage as shown by the dotted line in Figure 8.6(b). It follows that this circuit is called a peak rectifier because its output voltage is equal to the positive peak value of the input voltage. If we assume RL has a finite but large value, then the capacitor can discharge slowly through RL while th ...
... voltage as shown by the dotted line in Figure 8.6(b). It follows that this circuit is called a peak rectifier because its output voltage is equal to the positive peak value of the input voltage. If we assume RL has a finite but large value, then the capacitor can discharge slowly through RL while th ...
TPS56221 - Texas Instruments
... instantly to input voltage change. The TPS56221 is available in a thermally enhanced 22-pin PQFN (DQP) PowerPAD package. The device offers design flexibility with a variety of user programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation. OCP levels ar ...
... instantly to input voltage change. The TPS56221 is available in a thermally enhanced 22-pin PQFN (DQP) PowerPAD package. The device offers design flexibility with a variety of user programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation. OCP levels ar ...
HFBR-2412TCZ - Avago Technologies
... The curves in Figures 3, 4, and 5 are constructed assuming no inline splice or any additional system loss. Should the link consists of any in-line splices, these curves can still be used to calculate link limits provided they are shifted by the additional system loss expressed in dB. For example, Fi ...
... The curves in Figures 3, 4, and 5 are constructed assuming no inline splice or any additional system loss. Should the link consists of any in-line splices, these curves can still be used to calculate link limits provided they are shifted by the additional system loss expressed in dB. For example, Fi ...
ppt_ch16
... A voltage rating higher than the potential difference applied provides a safety factor for long life in service. The breakdown rating is lower for ac voltage because of the internal heat produced by continuous charge and discharge. ...
... A voltage rating higher than the potential difference applied provides a safety factor for long life in service. The breakdown rating is lower for ac voltage because of the internal heat produced by continuous charge and discharge. ...
ConstantVoltage, Constant-Current Controller with Primary
... The UCC28722 is a flyback power supply controller that provides accurate voltage and constant current regulation with primary-side feedback, eliminating the need for opto-coupler feedback circuits. The controller operates in discontinuous conduction mode with valley-switching to minimize switching l ...
... The UCC28722 is a flyback power supply controller that provides accurate voltage and constant current regulation with primary-side feedback, eliminating the need for opto-coupler feedback circuits. The controller operates in discontinuous conduction mode with valley-switching to minimize switching l ...
EEAP 245_Due: February 2, 1998
... The part of the oscilloscope that students typically find the most difficult to understand and adjust is the timing and synchronization. The display on an oscilloscope looks constant because the oscilloscope repetitively sweeps across the screen, drawing new plots of the input waveform, at a rate fa ...
... The part of the oscilloscope that students typically find the most difficult to understand and adjust is the timing and synchronization. The display on an oscilloscope looks constant because the oscilloscope repetitively sweeps across the screen, drawing new plots of the input waveform, at a rate fa ...
Physics – Further Electronics
... Both the Vp and the V p-p values are of limited use because they are not representative of the effective voltage delivered. These values are only maintained for an instant and a lesser amount is supplied at all other times. ...
... Both the Vp and the V p-p values are of limited use because they are not representative of the effective voltage delivered. These values are only maintained for an instant and a lesser amount is supplied at all other times. ...
Capacitor
... Whereas the resistor behaves all the “same” in AC or DC regimes, the capacitor doesn't - a capacitor will in general not conduct DC current, so it's influence becomes obvious only in AC and signal regime. ...
... Whereas the resistor behaves all the “same” in AC or DC regimes, the capacitor doesn't - a capacitor will in general not conduct DC current, so it's influence becomes obvious only in AC and signal regime. ...
2A/3A Dual Channel Synchronous Step-Down
... The output over-current protection (OCP) is implemented using a cycle-by-cycle valley detection control circuit. The switch current is monitored by measuring the low-side FET switch voltage between the SWx and PGNDx pins. This voltage is proportional to the switch current and the on-resistance of th ...
... The output over-current protection (OCP) is implemented using a cycle-by-cycle valley detection control circuit. The switch current is monitored by measuring the low-side FET switch voltage between the SWx and PGNDx pins. This voltage is proportional to the switch current and the on-resistance of th ...
MAX1775 Dual-Output Step-Down DC-DC Converter for PDA/Palmtop Computers General Description
... through the inductor starts at zero, rises above the minimum current limit, then ramps down to zero during each cycle (see Typical Operating Characteristics). The switch waveform may exhibit ringing, which occurs at the resonant frequency of the inductor and stray ...
... through the inductor starts at zero, rises above the minimum current limit, then ramps down to zero during each cycle (see Typical Operating Characteristics). The switch waveform may exhibit ringing, which occurs at the resonant frequency of the inductor and stray ...
Physics 4B Lab Experiments
... If the 2-voltmeter method is used to gather very small current/voltage data for the lamp, the slope of the current-voltage data should be linear as at very low currents, the lamp is purely resistive as it producing only thermal heat. This low-current resistance value will be called the "cold" resist ...
... If the 2-voltmeter method is used to gather very small current/voltage data for the lamp, the slope of the current-voltage data should be linear as at very low currents, the lamp is purely resistive as it producing only thermal heat. This low-current resistance value will be called the "cold" resist ...
Analogue Panel Instruments List 7
... The instrument is equipped with two built-in relays with changeover contacts, which enable supervising of limit values. The switching points of the relays can be adjusted in the range 0…100% of maximum value by potentiometers on the backside. Two additional potentiometers enable a delay function for ...
... The instrument is equipped with two built-in relays with changeover contacts, which enable supervising of limit values. The switching points of the relays can be adjusted in the range 0…100% of maximum value by potentiometers on the backside. Two additional potentiometers enable a delay function for ...
Electronically Scanned Composite Right/Left Handed Microstrip
... ODERN commercial and military communication frequency bands are getting saturated. In this context, despite their unique features of high directivity and broad-range scanning, conventional leaky-wave (LW) antennas [1], [2] are often not suitable because of the excessive frequency band they use for s ...
... ODERN commercial and military communication frequency bands are getting saturated. In this context, despite their unique features of high directivity and broad-range scanning, conventional leaky-wave (LW) antennas [1], [2] are often not suitable because of the excessive frequency band they use for s ...
Comparison of Universal Circuit Breaker Arc Representation
... to insure its universality. Details of implementation of the universal representation are given. A performance comparison with the EMTP built-in Avdonin model is incorporated to validate the proposed representation effectiveness. An SF6 circuit breaker rated at 40kA, 123kV with experimentally define ...
... to insure its universality. Details of implementation of the universal representation are given. A performance comparison with the EMTP built-in Avdonin model is incorporated to validate the proposed representation effectiveness. An SF6 circuit breaker rated at 40kA, 123kV with experimentally define ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""