How to get a high power factor with the HVLED815PF device
... With the first method, the additional circuitry in Figure 1 applies a DC offset and a modulation, both proportional to the VRECT, to the CS pin and permits to obtain an HPF. This solution is described in detail in 1. of Section 3. The second one, shown in Figure 2, applies a modulation of the ILED p ...
... With the first method, the additional circuitry in Figure 1 applies a DC offset and a modulation, both proportional to the VRECT, to the CS pin and permits to obtain an HPF. This solution is described in detail in 1. of Section 3. The second one, shown in Figure 2, applies a modulation of the ILED p ...
Higher EE pupil notes (8.3MB Word)
... b) As the light level decreases the resistance of the LDR increases. Calculate the reading on the voltmeter when the resistance of the LDR is 1600Ω. ...
... b) As the light level decreases the resistance of the LDR increases. Calculate the reading on the voltmeter when the resistance of the LDR is 1600Ω. ...
LT1969 - Dual 700MHz, 200mA, Adjustable Current Operational Amplifier
... Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The inputs are protected by back-to-back diodes. If the differential input voltage exceeds 0.7V, the input current should be limited to less than 10mA. Note 3: A heat sink may be required to ...
... Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The inputs are protected by back-to-back diodes. If the differential input voltage exceeds 0.7V, the input current should be limited to less than 10mA. Note 3: A heat sink may be required to ...
DTC144TT1 Bias Resistor Transistor
... used to generate this profile. The type of solder used was 62/36/2 Tin Lead Silver with a melting point between 177–189°C. When this type of furnace is used for solder reflow work, the circuit boards and solder joints tend to heat first. The components on the board are then heated by conduction. The ...
... used to generate this profile. The type of solder used was 62/36/2 Tin Lead Silver with a melting point between 177–189°C. When this type of furnace is used for solder reflow work, the circuit boards and solder joints tend to heat first. The components on the board are then heated by conduction. The ...
ROMANSO ELECTRONICS CO., LTD NAME: DMX Controller
... supply voltage: DC5V, 12V ,18V, 24V optional(specify the required voltage on orders) output: 3 channels connection mode: common anode ...
... supply voltage: DC5V, 12V ,18V, 24V optional(specify the required voltage on orders) output: 3 channels connection mode: common anode ...
Giambattista, Ch. 18 Problems: 1, 12, 22, 23, 40, 42, 44, 52
... 1.Strategy Use the definition of electric current. (Current is defined as “charge per time”.) Solution Compute the total charge. ...
... 1.Strategy Use the definition of electric current. (Current is defined as “charge per time”.) Solution Compute the total charge. ...
ISL6730A, ISL6730B, ISL6730C, ISL6730D Datasheet
... When the VFB pin is below 0.2V, the controller is disabled and the PWM output driver is tri-stated. When disabled, the IC power will be reduced. During shutdown, the COMP pin is discharged to GND and the controller is disabled. The Over-Temperature Protection (OTP) is still alive to prevent the cont ...
... When the VFB pin is below 0.2V, the controller is disabled and the PWM output driver is tri-stated. When disabled, the IC power will be reduced. During shutdown, the COMP pin is discharged to GND and the controller is disabled. The Over-Temperature Protection (OTP) is still alive to prevent the cont ...
RT9302 - Richtek
... to 5.5V. An input capacitor at the VIN pin could reduce ripple voltage. It is recommended to use a ceramic 1μF or larger capacitance as the input capacitor. This IC provides an under voltage lockout (UVLO) function to prevent it from unstable issue when startup. The UVLO threshold of input falling v ...
... to 5.5V. An input capacitor at the VIN pin could reduce ripple voltage. It is recommended to use a ceramic 1μF or larger capacitance as the input capacitor. This IC provides an under voltage lockout (UVLO) function to prevent it from unstable issue when startup. The UVLO threshold of input falling v ...
Evaluates: MAX4374/MAX4375 MAX4374 Evaluation Kit General Description Features
... is also available in 14-pin SO, but that package is not compatible with this EV kit. The MAX4374 EV kit PCB comes with a MAX4374FEUB+ installed, which is the 50V/V gain version. The MAX4374 EV kit can also be used to evaluate the MAX4374T (20V/V gain version), MAX4374H (100V/V gain version), MAX4375 ...
... is also available in 14-pin SO, but that package is not compatible with this EV kit. The MAX4374 EV kit PCB comes with a MAX4374FEUB+ installed, which is the 50V/V gain version. The MAX4374 EV kit can also be used to evaluate the MAX4374T (20V/V gain version), MAX4374H (100V/V gain version), MAX4375 ...
electromagnetism_8
... reverses but polarity of split ring remains the z Commercial dc gen. same use out of phase coils ...
... reverses but polarity of split ring remains the z Commercial dc gen. same use out of phase coils ...
Mini Assembly Manual
... capacitance and quick response time. High quality film caps can be applied as well as super low noise resistors. Higher voltage rails can be incorporated allowing for greater voltage swings and beefier output devices can be selected to operate in full class-A mode providing both excellent linearity ...
... capacitance and quick response time. High quality film caps can be applied as well as super low noise resistors. Higher voltage rails can be incorporated allowing for greater voltage swings and beefier output devices can be selected to operate in full class-A mode providing both excellent linearity ...
Grade 9 Push switches
... 3.2 Demonstrates knowledge and understanding of how simple electronic circuits and devices are used to make an output respond to an input signal (e.g. resistors, light-emitting diodes, transistors, push or magnetic switches, thermistors, light-dependent resistors). Learning Space: Assessment Hyperli ...
... 3.2 Demonstrates knowledge and understanding of how simple electronic circuits and devices are used to make an output respond to an input signal (e.g. resistors, light-emitting diodes, transistors, push or magnetic switches, thermistors, light-dependent resistors). Learning Space: Assessment Hyperli ...
Solutions for Today`s Low-Power LED Lighting Trends
... the lamp case without the need for the ballast transformer. It is possible to achieve over 80% total power efficiency in this configuration. In general, it is not easy to build an AC-DC LED driver board into the small bulb case while also meeting PF and THD requirements in the application. It is als ...
... the lamp case without the need for the ballast transformer. It is possible to achieve over 80% total power efficiency in this configuration. In general, it is not easy to build an AC-DC LED driver board into the small bulb case while also meeting PF and THD requirements in the application. It is als ...
PDF
... to avoid leakage ground current and to save power components while still sustaining comparatively high efficiency to those in [9]–[11]. Note that a full-bridge inverter operated with bipolar modulation can achieve only low frequency common-mode voltage (vCM = (vdc− vs)/2), resulting in low leakage g ...
... to avoid leakage ground current and to save power components while still sustaining comparatively high efficiency to those in [9]–[11]. Note that a full-bridge inverter operated with bipolar modulation can achieve only low frequency common-mode voltage (vCM = (vdc− vs)/2), resulting in low leakage g ...
Electrical ballast
An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the tube's negative resistance characteristic.Ballasts vary in design complexity. They can be as simple as a series resistor or inductor, capacitors, or a combination thereof or as complex as electronic ballasts used with fluorescent lamps and high-intensity discharge lamps.