KA3842/3843
... This is the inverting input of the Error Amplifier. It is normally connected to the switching power supply output through a resistor divider. ...
... This is the inverting input of the Error Amplifier. It is normally connected to the switching power supply output through a resistor divider. ...
Ohms Law Ohmic Resistors versus Lightbulbs
... resistance of a conductor increases as its temperature increases. • Light bulbs do not obey Ohm’s Law – Tungsten is such a good conductor that their resistance depends on their temperature – As their temperature increases, the power dissipated by the bulb increases • i.e. They are brighter when they ...
... resistance of a conductor increases as its temperature increases. • Light bulbs do not obey Ohm’s Law – Tungsten is such a good conductor that their resistance depends on their temperature – As their temperature increases, the power dissipated by the bulb increases • i.e. They are brighter when they ...
Constant Current Technology explained
... Most LED systems sold today are powered by a constant voltage power supply, in our case 12 Volt DC. With this type of system there are two common ways of controlling the current that drives the LED’s. The first way is by use of a simple fixed resistor connected in series with one or more of the LED’ ...
... Most LED systems sold today are powered by a constant voltage power supply, in our case 12 Volt DC. With this type of system there are two common ways of controlling the current that drives the LED’s. The first way is by use of a simple fixed resistor connected in series with one or more of the LED’ ...
NPN Bipolar Transistor for High-Current Switching Applications
... semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety meas ...
... semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety meas ...
ST13007
... All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and service ...
... All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and service ...
HW8
... 8. You are given a galvanometer that will deflect a full scale if a current of 50.0 A runs through it. At that current, there is a voltage drop of 0.250V across the meter. (a) What is the internal resistance of the galvanometer? (b) You wish to use the galvanometer to construct an ammeter that can ...
... 8. You are given a galvanometer that will deflect a full scale if a current of 50.0 A runs through it. At that current, there is a voltage drop of 0.250V across the meter. (a) What is the internal resistance of the galvanometer? (b) You wish to use the galvanometer to construct an ammeter that can ...
ADM6819 数据手册DataSheet 下载
... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to ...
... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to ...
Voltage-Divider Bias
... With a good Q-point established, let’s look at the effect a superimposed ac voltage has on the circuit. Note the collector current swings do not exceed the limits of operation(saturation and cutoff). However, as you might already know, applying too much ac voltage to the base would result in driving ...
... With a good Q-point established, let’s look at the effect a superimposed ac voltage has on the circuit. Note the collector current swings do not exceed the limits of operation(saturation and cutoff). However, as you might already know, applying too much ac voltage to the base would result in driving ...
Electron Flow
... a Pull-Down resistor since it is pulling the input down to ground or Vss when the button is not active (not pressed). ...
... a Pull-Down resistor since it is pulling the input down to ground or Vss when the button is not active (not pressed). ...
UNIT-VII Static Series Compensators
... maximum and the successive, opposite polarity half-cycle of the line current will discharge it from this maximum to zero. • As can be seen, the capacitor insertion at line current zero, necessitated by the switching limitation of the thyristor valve, results in a dc offset voltage which is equal to ...
... maximum and the successive, opposite polarity half-cycle of the line current will discharge it from this maximum to zero. • As can be seen, the capacitor insertion at line current zero, necessitated by the switching limitation of the thyristor valve, results in a dc offset voltage which is equal to ...
High School certification test
... 22. With three 2.5k resistors A. 668.81k Ohms. B. 66.29 Ohms. C. 669.29 Ohms D. 670.50k Ohms. ...
... 22. With three 2.5k resistors A. 668.81k Ohms. B. 66.29 Ohms. C. 669.29 Ohms D. 670.50k Ohms. ...
Programmable shunt voltage reference
... pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of connected pin combinations while the other pins are floating. ...
... pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of connected pin combinations while the other pins are floating. ...
TRIAC
TRIAC, from triode for alternating current, is a genericized tradename for an electronic component that can conduct current in either direction when it is triggered (turned on), and is formally called a bidirectional triode thyristor or bilateral triode thyristor.TRIACs are a subset of thyristors and are closely related to silicon controlled rectifiers (SCR). However, unlike SCRs, which are unidirectional devices (that is, they can conduct current only in one direction), TRIACs are bidirectional and so allow current in either direction. Another difference from SCRs is that TRIAC current can be enabled by either a positive or negative current applied to its gate electrode, whereas SCRs can be triggered only by positive current into the gate. To create a triggering current, a positive or negative voltage has to be applied to the gate with respect to the MT1 terminal (otherwise known as A1).Once triggered, the device continues to conduct until the current drops below a certain threshold called the holding current.The bidirectionality makes TRIACs very convenient switches for alternating-current (AC) circuits, also allowing them to control very large power flows with milliampere-scale gate currents. In addition, applying a trigger pulse at a controlled phase angle in an AC cycle allows control of the percentage of current that flows through the TRIAC to the load (phase control), which is commonly used, for example, in controlling the speed of low-power induction motors, in dimming lamps, and in controlling AC heating resistors.