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MP6902 Synchronous Rectification Controller Application Note
MP6902 Synchronous Rectification Controller Application Note

LLC resonant half-bridge converter design guideline
LLC resonant half-bridge converter design guideline

... tank (in the continuous conduction mode), while it is less accurate, but still valid, at frequencies below the resonance (in the discontinuous conduction mode). It is worth pointing out also that many details of circuit operation on a cycle-to-cycle time base will be lost. In particular, FHA provide ...
power - NMEA
power - NMEA

Equalization and desulphation of lead acid based batteries
Equalization and desulphation of lead acid based batteries

...  sulphation on a small scale is a normal part of the discharge process  The sulphation is removed by a three stage charge algorithm  It is important to note that permanent and damaging sulphation is not normal and occurs when the lead sulphate is in a form that is not retroactive and is not remov ...
MAX619 Regulated 5V Charge-Pump DC
MAX619 Regulated 5V Charge-Pump DC

LTM8022 - 1A, 36V DC/DC uModule
LTM8022 - 1A, 36V DC/DC uModule

... voltage higher than 2.4V, bias power will be drawn from the external source (typically the regulated output voltage). This improves efficiency. The RUN/SS pin is used to place the LTM8022 in shutdown, disconnecting the output and reducing the input current to less than 1μA. To further optimize efficie ...
MAX3355E ±15kV ESD-Protected USB On-the-Go Charge Pump and Comparators in UCSP General Description
MAX3355E ±15kV ESD-Protected USB On-the-Go Charge Pump and Comparators in UCSP General Description

... The MAX3355E integrates a charge pump and comparators to enable a system with an integrated USB onthe-go (OTG) dual-role transceiver to function as a USB OTG dual-role device. USB OTG facilitates the direct connection of peripherals and mobile devices such as PDAs, cellular phones, MP3 players, and ...
ELECRICAL CIRCUITS
ELECRICAL CIRCUITS

... put your finger over the portion of the symbol you are trying to figure out and you have your formula. ...
LF147 数据资料 dataSheet 下载
LF147 数据资料 dataSheet 下载

... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
UC2524 数据资料 dataSheet 下载
UC2524 数据资料 dataSheet 下载

... timing resistor (RT), and one timing capacitor (CT), RT establishes a constant charging current for CT. This results in a linear voltage ramp at CT, which is fed to the comparator providing linear control of the output pulse width by the error amplifier. The UC1524 contains an on-board 5 V regulator ...
BD2202G-LB
BD2202G-LB

Motor Control
Motor Control

... AC SQUIRREL CAGE MOTOR In squirrel cage motors, the conductors in the rotor slots are shorted at the ends. Therefore, the resistance of the conductors is fixed and cannot be changed. However, resistors can be connected in-line with the motor to reduce the starting voltage. During the acceleration pe ...
IRPLLNR1
IRPLLNR1

A Multiple Output Dc-Dc Converter Using Two Switch
A Multiple Output Dc-Dc Converter Using Two Switch

thyristors and triacs control gate trigger circuits
thyristors and triacs control gate trigger circuits

... characteristics, shown in Fig.3.3(b). Also, the forward conduction characteristic can be approximate with an idealized characteristic because the on-voltage is reduced to a thyristor, in range of (1÷3)V. The higher values belong to the high power thyristors. 4. Thyristors and triacs control techniqu ...
BD1482EFJ
BD1482EFJ

... Please set to stand within 100us when you control ON/OFF by the EN signal. This necessity doesn't exist when EN pin is connected with VIN and EN is not controlled. The control by open drain MOSFET shown in a left chart is recommended. (Attention 2) In case the output voltage is used in a setting of ...
LED panel to select- Advertising light boxes LED backlight -...
LED panel to select- Advertising light boxes LED backlight -...

Understand How to Tune Your 30S-1
Understand How to Tune Your 30S-1

MAX8600/MAX8601 Single-/Dual-Input 1-Cell Li+ Chargers with OVP Protection and Programmable Charge Timer
MAX8600/MAX8601 Single-/Dual-Input 1-Cell Li+ Chargers with OVP Protection and Programmable Charge Timer

... The MAX8600/MAX8601 contain an open-drain POK output that goes low when a valid input source is detected at DC or USB (MAX8601 only). A valid input source is one whose voltage is between 4.15V and 7V and exceeds the battery voltage by 320mV. After a valid input has been established, charging is sust ...
CHAPTER 11
CHAPTER 11

... In the series-connected generator the field flux is obtained by passing the armature current through the series-field winding. Because the excitation is provided by the armature current, it varies widely with load, especially for a generator and therefore suffers from very poor voltage regulation. W ...
EET307: TRIAC+ lamp dimmer application msw
EET307: TRIAC+ lamp dimmer application msw

... During the conduction time a certain quantity of charges is injected into the structure. During turn-off of one zone an excess charge remains, particularly in the region of the gate, and this can in certain cases result in the firing of the other conduction zone at the moment when the supply voltage ...
BD1484EFJ
BD1484EFJ

... Please set to stand within 100us when you control ON/OFF by the EN signal. This necessity doesn't exist when EN pin is connected with VIN and EN is not controlled. The control by open drain MOSFET shown in a left chart is recommended. (Attention 2) In case the output voltage is used in a setting of ...
R-100 OEM Pockels Cell Driver For BBO Pockels Cell Laser Pulse
R-100 OEM Pockels Cell Driver For BBO Pockels Cell Laser Pulse

... Set the pulse generator to produce a 5 volt pulse 2uS wide at a repetition rate of 1 kHz. Set the high voltage power supply to output ±500 volts. Apply 18V power to the R-100 driver while observing the scope display. You should see one channel go from 0V to +1000V and the other channel go from 0V to ...
PDF (1.45 MB)
PDF (1.45 MB)

... 2. Overview of LED Headlamp Driver 2.1 Constant current control The forward voltage of one LED chip is about 2 to 4 V depending on the temperature. LEDs are generally serially connected for low-beam operation (20 to 40 V for 10 chips), and thus the supply voltage needs to be boosted by a DC/DC conve ...
FAN5354 3 MHz, 3 A Synchronous Buck Regulator  
FAN5354 3 MHz, 3 A Synchronous Buck Regulator 

... The FAN5354 is a step-down switching voltage regulator that delivers an adjustable output from an input voltage supply of 2.7 V to 5.5 V. Using a proprietary architecture with synchronous rectification, the FAN5354 is capable of delivering 3 A at over 85% efficiency, while maintaining a very high ef ...
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Current source



A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it.A current source is the dual of a voltage source. The term constant-current 'sink' is sometimes used for sources fed from a negative voltage supply. Figure 1 shows the schematic symbol for an ideal current source, driving a resistor load. There are two types - an independent current source (or sink) delivers a constant current. A dependent current source delivers a current which is proportional to some other voltage or current in the circuit.
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