RT8749 - Richtek
... fan motor's speed to this target speed by adjusting the switching duty ratio of the output drivers. It should be noted that the input PWM frequency is independent of the switching frequency of the output drivers. Hence, the input PWM frequency can be chosen within a wide range, from 100Hz to 100kHz, ...
... fan motor's speed to this target speed by adjusting the switching duty ratio of the output drivers. It should be noted that the input PWM frequency is independent of the switching frequency of the output drivers. Hence, the input PWM frequency can be chosen within a wide range, from 100Hz to 100kHz, ...
View File
... AB: potential increases by E on the source of EMF, then decreases by Ir (because of the internal resistance) Thus, terminal voltage on the battery V is ...
... AB: potential increases by E on the source of EMF, then decreases by Ir (because of the internal resistance) Thus, terminal voltage on the battery V is ...
Light Emitting Diodes and Digital Circuits I
... about ground connections. Measure the current in the circuit by using an oscilloscope to measure the voltage across the 1 kΩ resistor. (With R = 1 kΩ, the current in milliamperes (mA) is directly equal to the voltage in volts). Observe the increasing brightness as a ...
... about ground connections. Measure the current in the circuit by using an oscilloscope to measure the voltage across the 1 kΩ resistor. (With R = 1 kΩ, the current in milliamperes (mA) is directly equal to the voltage in volts). Observe the increasing brightness as a ...
CircuitTheoryLaws
... • The current flowing through each component (IT, IR1, IR2, and IR3) • The voltage across each component (VT, VR1, VR2, and VR3) • Use the results to verify Kirchhoff’s Voltage Law. ...
... • The current flowing through each component (IT, IR1, IR2, and IR3) • The voltage across each component (VT, VR1, VR2, and VR3) • Use the results to verify Kirchhoff’s Voltage Law. ...
Performance Improvement of Phase Displacement Modulated Inverter
... the inverter constant. The output waveforms of an ideal inverter should be sinusoidal. However, the waveforms of practical inverters are non-sinusoidal and contain certain harmonics which can be seen with ease in frequency domain. It is needless to say that harmonics have some detrimental effects on ...
... the inverter constant. The output waveforms of an ideal inverter should be sinusoidal. However, the waveforms of practical inverters are non-sinusoidal and contain certain harmonics which can be seen with ease in frequency domain. It is needless to say that harmonics have some detrimental effects on ...
SSM2143 数据手册DataSheet 下载
... Additional features of the device include a slew rate of 10 V/µs and wide bandwidth. Total harmonic distortion (THD) is less than 0.004% over the full audio band, even while driving low impedance loads. The SSM2143 input stage is designed to handle input signals as large as +28 dBu at G = 1/2. Altho ...
... Additional features of the device include a slew rate of 10 V/µs and wide bandwidth. Total harmonic distortion (THD) is less than 0.004% over the full audio band, even while driving low impedance loads. The SSM2143 input stage is designed to handle input signals as large as +28 dBu at G = 1/2. Altho ...
EUP3410/3411 2A,16V,380KHz Step-Down Converter
... the IC and a larger capacitor placed further away. If using this technique, it is recommended that the larger capacitor type are either tantalum or electrolytic. In Figure 1, all ceramic capacitors should be placed close to the EUP3410/3411. ...
... the IC and a larger capacitor placed further away. If using this technique, it is recommended that the larger capacitor type are either tantalum or electrolytic. In Figure 1, all ceramic capacitors should be placed close to the EUP3410/3411. ...
Ideal Voltage Sources
... 2. Label polarities of all active elements (voltage and current sources). 3. Assign polarities to all passive elements (resistors and other loads); for passive elements, current always flows into the positive terminal. ...
... 2. Label polarities of all active elements (voltage and current sources). 3. Assign polarities to all passive elements (resistors and other loads); for passive elements, current always flows into the positive terminal. ...
FSD210 Fairchild Power Switch (FPS)
... triggered to protect the SMPS. It is possible that a short term load transient can occur under normal operation. If this occurs the system should not shut down. In order to avoid false shut-downs, the over load protection circuit is designed to trigger after a delay. Therefore the device can discrim ...
... triggered to protect the SMPS. It is possible that a short term load transient can occur under normal operation. If this occurs the system should not shut down. In order to avoid false shut-downs, the over load protection circuit is designed to trigger after a delay. Therefore the device can discrim ...
ATT7030A Application Note
... In diagram 4 and diagram 5, IA1 and IA2 is CT’s secondary signal. We should notice some points when design sampling input signal: 1. Whatever input method, the direct current bias voltage of input pin VxP and VxN should be 2.4V. The bias voltage must be provided by pin REFOUT (pin 11), or else the m ...
... In diagram 4 and diagram 5, IA1 and IA2 is CT’s secondary signal. We should notice some points when design sampling input signal: 1. Whatever input method, the direct current bias voltage of input pin VxP and VxN should be 2.4V. The bias voltage must be provided by pin REFOUT (pin 11), or else the m ...
Datasheet proStop - Non Solenoid Switch Body - Standard
... proStop - Standard Ordering Information ...
... proStop - Standard Ordering Information ...
Design and development of high voltage high power operational
... of the designed power opamp are given in table 1. The schematic for the opamp designed is given in figure 2. 3.1 Input opamp OPA445 (U2) is a FET based monolithic operational amplifier with a unity gain bandwidth of 4 MHz and capable of operation from power supplies up to ±45 V and output currents o ...
... of the designed power opamp are given in table 1. The schematic for the opamp designed is given in figure 2. 3.1 Input opamp OPA445 (U2) is a FET based monolithic operational amplifier with a unity gain bandwidth of 4 MHz and capable of operation from power supplies up to ±45 V and output currents o ...
Series and Parallel Circuit Problems
... 1. Three resistors are connected in series to a 10 V battery. The first resistor is a 16 Ω resistor, the second is a 36 Ω resistor and the third is a 28 Ω resistor. a) Draw and label the circuit using the correct schematic symbols. b) Find the total (or equivalent) resistance of the circuit (RT). c) ...
... 1. Three resistors are connected in series to a 10 V battery. The first resistor is a 16 Ω resistor, the second is a 36 Ω resistor and the third is a 28 Ω resistor. a) Draw and label the circuit using the correct schematic symbols. b) Find the total (or equivalent) resistance of the circuit (RT). c) ...
Basic Circuitry and Measurements Lab 3 1
... • Use the multimeter to measure the voltages across the resistances and the current flowing in through the circuit – Voltage Measurement: Connect the multimeter in parallel. Use the Rightmost HI and the rightmost LO terminals. Push the DC V button – Current Measurement: Use Ohm’s Law – It is usually ...
... • Use the multimeter to measure the voltages across the resistances and the current flowing in through the circuit – Voltage Measurement: Connect the multimeter in parallel. Use the Rightmost HI and the rightmost LO terminals. Push the DC V button – Current Measurement: Use Ohm’s Law – It is usually ...
semiconductor circuit templates
... goes up as the variable resistance value goes up. resistance ...
... goes up as the variable resistance value goes up. resistance ...
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.