AP1533
... transient characteristics. The PWM control circuit is able to vary the duty ratio linearly from 0 up to 99%. This converter also contains an error amplifier circuit as well as a soft-start circuit that prevents overshoot at startup. An enable function, an over current protect function and a short ci ...
... transient characteristics. The PWM control circuit is able to vary the duty ratio linearly from 0 up to 99%. This converter also contains an error amplifier circuit as well as a soft-start circuit that prevents overshoot at startup. An enable function, an over current protect function and a short ci ...
lecture3 - WordPress.com
... to a 120 V, 60 Hz source. The coupling between the primary and the secondary is perfect but the magnetizing current is 4 A. calculate: a. The effective voltage across the secondary terminals b. The peak voltage across the secondary terminals. c. The instantaneous voltage across the secondary when th ...
... to a 120 V, 60 Hz source. The coupling between the primary and the secondary is perfect but the magnetizing current is 4 A. calculate: a. The effective voltage across the secondary terminals b. The peak voltage across the secondary terminals. c. The instantaneous voltage across the secondary when th ...
บทที่ 6 Special Transformers
... High frequency transformers (ต่ อ) • We are interested, of course, in maintaining the original voltage ratio of 120 V to 24 V. This is readily achieved by rewinding the transformer. Thus, the number of turns on the primary will be reduced from 600 to 600 t (120 V/1600 V) = 45 turns, while the sec ...
... High frequency transformers (ต่ อ) • We are interested, of course, in maintaining the original voltage ratio of 120 V to 24 V. This is readily achieved by rewinding the transformer. Thus, the number of turns on the primary will be reduced from 600 to 600 t (120 V/1600 V) = 45 turns, while the sec ...
What is an oscillator
... states rapidly and produce a square wave. The RC time constant determines the frequency. ...
... states rapidly and produce a square wave. The RC time constant determines the frequency. ...
LV8860V - ON Semiconductor
... *The current limiter is activated when the current detection resistor voltage exceeds 225mV between RF (No.15pin) and GND (No.14pin). When the current limiter is active, LV8860V turns to current regeneration mode and consumes the redundant current; hence, coil current does not flow any higher than t ...
... *The current limiter is activated when the current detection resistor voltage exceeds 225mV between RF (No.15pin) and GND (No.14pin). When the current limiter is active, LV8860V turns to current regeneration mode and consumes the redundant current; hence, coil current does not flow any higher than t ...
An alternator is an electrical generator that converts mechanical
... generator[13] that could produce a stated output voltage, regardless of the value of the actual load.[14] The introduction of transformers in the mid-1880s led to the widespread use of alternating current and the use of alternators needed to produce it.[15] After 1891, polyphase alternators were int ...
... generator[13] that could produce a stated output voltage, regardless of the value of the actual load.[14] The introduction of transformers in the mid-1880s led to the widespread use of alternating current and the use of alternators needed to produce it.[15] After 1891, polyphase alternators were int ...
MAX16936,38 - Maxim Part Number Search
... The MAX16936/MAX16938 are 2.5A current-mode stepdown converters with integrated high-side and low-side MOSFETs designed to operate with an external Schottky diode for better efficiency. The low-side MOSFET enables fixed-frequency forced-PWM (FPWM) operation under light-load applications. The devices ...
... The MAX16936/MAX16938 are 2.5A current-mode stepdown converters with integrated high-side and low-side MOSFETs designed to operate with an external Schottky diode for better efficiency. The low-side MOSFET enables fixed-frequency forced-PWM (FPWM) operation under light-load applications. The devices ...
USER MANUAL FOR VOLTAGE DIVIDER
... Voltage division is a method used to change the voltage across a particular circuit through the use of resistors as the only circuit component. The voltage divider uses two resistors in series to decrease the voltage through a parallel circuit, according to the second resistor. Figure 1a shows the c ...
... Voltage division is a method used to change the voltage across a particular circuit through the use of resistors as the only circuit component. The voltage divider uses two resistors in series to decrease the voltage through a parallel circuit, according to the second resistor. Figure 1a shows the c ...
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... remains OFF until VEB = VP , where VP is known as the peak-point voltage. As soon as VEB tends to go above VP , the UJT will turn ON if and only if the emitter current I E ≥ I P , where I P is the peak-point emitter current. Consider this as the condition for the device to turn on. As soon as the em ...
... remains OFF until VEB = VP , where VP is known as the peak-point voltage. As soon as VEB tends to go above VP , the UJT will turn ON if and only if the emitter current I E ≥ I P , where I P is the peak-point emitter current. Consider this as the condition for the device to turn on. As soon as the em ...
Capacitors
... Here you have a battery, a light bulb and a capacitor. If the capacitor is pretty big, what you would notice is that, when you connected the battery, the light bulb would light up as current flows from the battery to the capacitor to charge it up. The bulb would get progressively dimmer and finally ...
... Here you have a battery, a light bulb and a capacitor. If the capacitor is pretty big, what you would notice is that, when you connected the battery, the light bulb would light up as current flows from the battery to the capacitor to charge it up. The bulb would get progressively dimmer and finally ...
UC3844B, UC3845B, UC2844B, UC2845B High Performance
... The oscillator frequency is programmed by the values selected for the timing components RT and CT. Capacitor CT is charged from the 5.0 V reference through resistor RT to approximately 2.8 V and discharged to 1.2 V by an internal current sink. During the discharge of CT, the oscillator generates an ...
... The oscillator frequency is programmed by the values selected for the timing components RT and CT. Capacitor CT is charged from the 5.0 V reference through resistor RT to approximately 2.8 V and discharged to 1.2 V by an internal current sink. During the discharge of CT, the oscillator generates an ...
HMC860LP3E - Hittite Microwave Corporation
... ceramic capacitors typically have much lower Resr (as low as 0.02 Ohm at resonance) hence they will need a series resistor to insure stability. In the case when several capacitors are connected at the output (which is often the case with noise and spurious sensitive circuits), an alternate approach ...
... ceramic capacitors typically have much lower Resr (as low as 0.02 Ohm at resonance) hence they will need a series resistor to insure stability. In the case when several capacitors are connected at the output (which is often the case with noise and spurious sensitive circuits), an alternate approach ...
TPS54325 数据资料 dataSheet 下载
... both low ESR and ceramic output capacitors. It is stable even with virtually no ripple at the output. At the beginning of each cycle, the high-side MOSFET is turned on. This MOSFET is turned off after internal one shot timer expires. This one shot timer is set by the converter input voltage ,VIN, an ...
... both low ESR and ceramic output capacitors. It is stable even with virtually no ripple at the output. At the beginning of each cycle, the high-side MOSFET is turned on. This MOSFET is turned off after internal one shot timer expires. This one shot timer is set by the converter input voltage ,VIN, an ...
1.5 A 280 kHz/560 kHz Boost Regulators
... accuracy. The output of the oscillator turns on the power switch at a frequency of 280 kHz (CS5171/2) or 560 kHz (CS5173/4), as shown in Figure 27. The power switch is turned off by the output of the PWM Comparator. A TTL−compatible sync input at the SS pin is capable of syncing up to 1.8 times the ...
... accuracy. The output of the oscillator turns on the power switch at a frequency of 280 kHz (CS5171/2) or 560 kHz (CS5173/4), as shown in Figure 27. The power switch is turned off by the output of the PWM Comparator. A TTL−compatible sync input at the SS pin is capable of syncing up to 1.8 times the ...
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... Multi-level inverters are became popular for usage in medium voltage, low voltage power applications due to flexibility in control and better performance characteristics in terms of harmonic regulation. Neutral point clamped are popular as they require less number of sources as their input when comp ...
... Multi-level inverters are became popular for usage in medium voltage, low voltage power applications due to flexibility in control and better performance characteristics in terms of harmonic regulation. Neutral point clamped are popular as they require less number of sources as their input when comp ...
ELECTRONIC INSTRUMENTATION Reference Books
... harmonic 2f1. An oscilloscope used to display the signal in the time-amplitude domain would display only one waveform-the composite of f1 + 2f1 as shown in Fig. 8b. A spectrum analyzer used to display the components of the composite signal in the frequency-amplitude domain would clearly display ...
... harmonic 2f1. An oscilloscope used to display the signal in the time-amplitude domain would display only one waveform-the composite of f1 + 2f1 as shown in Fig. 8b. A spectrum analyzer used to display the components of the composite signal in the frequency-amplitude domain would clearly display ...
International Electrical Engineering Journal (IEEJ) Vol. 6 (2015) No.3, pp. 1822-1827
... shifted full bridge is formed by the switches Q1 ̴ Q4 with their output parasitic capacitors C1 ̴ C4, anti- parallel diodes D1 ̴ D4. Resonant circuit is formed by resonant inductor Lr, resonant capacitor Cr, parallel inductor La in series with an active switch Qa. Dr1 & Dr2 are the output rectifier ...
... shifted full bridge is formed by the switches Q1 ̴ Q4 with their output parasitic capacitors C1 ̴ C4, anti- parallel diodes D1 ̴ D4. Resonant circuit is formed by resonant inductor Lr, resonant capacitor Cr, parallel inductor La in series with an active switch Qa. Dr1 & Dr2 are the output rectifier ...
comparison of parallel resonant inverter and series resonant inverter
... supply for induction heating and melting installations. They are applied in all branches of the military and machine-building industries, as well as for jewellery, smithy heating, domestic heating and cooking devices and other purposes. The ordinary circuit of an AC-AC converter for induction heatin ...
... supply for induction heating and melting installations. They are applied in all branches of the military and machine-building industries, as well as for jewellery, smithy heating, domestic heating and cooking devices and other purposes. The ordinary circuit of an AC-AC converter for induction heatin ...
Capacitor Self
... 1) You will need two DC power supplies for this portion of the experiment. Get a second DC power supply from the cabinet in the back of the lab if needed. 2) Assemble the circuit in Figure 9 using the voltage divider op-amp power supply you used in the previous sections. 3) Set voltage supply P1 to ...
... 1) You will need two DC power supplies for this portion of the experiment. Get a second DC power supply from the cabinet in the back of the lab if needed. 2) Assemble the circuit in Figure 9 using the voltage divider op-amp power supply you used in the previous sections. 3) Set voltage supply P1 to ...
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.""