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The Photoelectric Effect: A Practical Approach
... The photoelectric effect is one of the most famous examples illustrating the particle nature of light and leading to the development of quantum mechanics at the turn of the 20th century. It is for his explanation of this effect that Albert Einstein was awarded the Nobel Prize in 1921. Einstein’s pap ...
... The photoelectric effect is one of the most famous examples illustrating the particle nature of light and leading to the development of quantum mechanics at the turn of the 20th century. It is for his explanation of this effect that Albert Einstein was awarded the Nobel Prize in 1921. Einstein’s pap ...
LAB 4 Series & Parallel Circuits
... a. Predict and measure the voltages v1, v2, and v3 using the VDR with the measured resistor values. How do they compare? b. Predict and measure the source current using the equivalent resistance and Ohm’s law. How do they compare? c. Measure the current before and after the 100Ω resistor. Was any cu ...
... a. Predict and measure the voltages v1, v2, and v3 using the VDR with the measured resistor values. How do they compare? b. Predict and measure the source current using the equivalent resistance and Ohm’s law. How do they compare? c. Measure the current before and after the 100Ω resistor. Was any cu ...
Avoiding Current Spikes with LEDs
... - more than 5,800°F or 3,250°C. The high temperature of the filament generates the light. When first powered, the filament is cold and has a much lower resistance than when it is hot. According to Ohm’s law, V = I R, the current in the filament is higher when the bulb is first turned and the filamen ...
... - more than 5,800°F or 3,250°C. The high temperature of the filament generates the light. When first powered, the filament is cold and has a much lower resistance than when it is hot. According to Ohm’s law, V = I R, the current in the filament is higher when the bulb is first turned and the filamen ...
LMD18200 55V, 3A Motor Driver May 2010
... Introduction The LMD18200 is a 55V, 3A Motor Driver designed for motion control applications. It can handle peak current up to 6A. It also gives out current sensing output. It gives out thermal warning signal at 1450C and shuts down the device at 1700C. Motor controller has LED indicators for Power, ...
... Introduction The LMD18200 is a 55V, 3A Motor Driver designed for motion control applications. It can handle peak current up to 6A. It also gives out current sensing output. It gives out thermal warning signal at 1450C and shuts down the device at 1700C. Motor controller has LED indicators for Power, ...
LV52204MU Application Notes
... VIN:battery voltage, IOUT:load current, L:inductor value, Fosc: OSC frequency, D:duty cycle, n:converter efficiency varies with load current. D = ((Vout + Vf ) - VIN ) / ( Vout + Vf ) Vout:output voltage, Vf:forward voltage of Schottky diode. It is important to ensure that the inductor current ratin ...
... VIN:battery voltage, IOUT:load current, L:inductor value, Fosc: OSC frequency, D:duty cycle, n:converter efficiency varies with load current. D = ((Vout + Vf ) - VIN ) / ( Vout + Vf ) Vout:output voltage, Vf:forward voltage of Schottky diode. It is important to ensure that the inductor current ratin ...
Experiment 6_revised
... – If only d.c. sources are present, then the values are the d.c. currents and voltages. – If only a.c. sinusoidal sources are present, then the values are the average a.c. currents and voltages (i.e., 0A and 0V since the average of sinusoid is zero). ...
... – If only d.c. sources are present, then the values are the d.c. currents and voltages. – If only a.c. sinusoidal sources are present, then the values are the average a.c. currents and voltages (i.e., 0A and 0V since the average of sinusoid is zero). ...
BDTIC
... 350mA. The IC incorporates a wide input voltage range, an internal power switch and the output current level can be adjusted with an external sense resistor. The IC is a step down converter tailored to drive the 1W LEDs. According to the multifunctional control pin the IC can be switched on and off ...
... 350mA. The IC incorporates a wide input voltage range, an internal power switch and the output current level can be adjusted with an external sense resistor. The IC is a step down converter tailored to drive the 1W LEDs. According to the multifunctional control pin the IC can be switched on and off ...
Potentiometer Lab
... reading the I/O pin until it drops to 0 (counting the time through the loop) – Use the PBASIC RCTIME command RCTIME 0, 1, time • Read pin 0, waiting for it to change from a 1, tell us the time (accuracy is dependent on the model of BasicStamp you are using) ...
... reading the I/O pin until it drops to 0 (counting the time through the loop) – Use the PBASIC RCTIME command RCTIME 0, 1, time • Read pin 0, waiting for it to change from a 1, tell us the time (accuracy is dependent on the model of BasicStamp you are using) ...
LS7362 - LSI CSI
... The LS7362 is a MOS integrated circuit designed to generate the signals necessary to control a three phase or four phase brushless DC motor. It is the basic building block of a brushless DC motor controller. The circuits respond to changes at the SENSE inputs, originating at the motor position senso ...
... The LS7362 is a MOS integrated circuit designed to generate the signals necessary to control a three phase or four phase brushless DC motor. It is the basic building block of a brushless DC motor controller. The circuits respond to changes at the SENSE inputs, originating at the motor position senso ...
Name
... 1. What is the symbol for a resistor? 2. What is the symbol for a battery? 3. What is the equation for Ohms Law? 4. Define Electrical Current. 5. What are the units for resistance? ...
... 1. What is the symbol for a resistor? 2. What is the symbol for a battery? 3. What is the equation for Ohms Law? 4. Define Electrical Current. 5. What are the units for resistance? ...
A Simple and Cheap Dark
... metal whose use is increasingly regulated. T here are many other solutions as well. Look here f or some op-amp based photodetector circuits with LED output, and check out some of the tricks used in welldesigned solar garden lights, which include gems like using the solar cell itself as the sensor. ( ...
... metal whose use is increasingly regulated. T here are many other solutions as well. Look here f or some op-amp based photodetector circuits with LED output, and check out some of the tricks used in welldesigned solar garden lights, which include gems like using the solar cell itself as the sensor. ( ...
A3. Revision notes - Practical Electricity
... This means the voltage across the variable resistor goes up (as the two resistors share the supply voltage). When the voltage across the variable resistor rises above 0.7 V, the NPN transistor switches ON and the LED comes on. By adjusting the variable resistor, we can adjust the temperature at whic ...
... This means the voltage across the variable resistor goes up (as the two resistors share the supply voltage). When the voltage across the variable resistor rises above 0.7 V, the NPN transistor switches ON and the LED comes on. By adjusting the variable resistor, we can adjust the temperature at whic ...
Design a Voltmeter
... • The output voltage of an ideal Op Amp is either V+ (VPOS) or V- (VNEG). • The output voltage of a real Op Amp, such as the LM 324, is not quite 9V (supposed to be 1.5V less than V+). – To measure exactly what the maximum voltage is, disconnect the all components on the output of the LM 324, place ...
... • The output voltage of an ideal Op Amp is either V+ (VPOS) or V- (VNEG). • The output voltage of a real Op Amp, such as the LM 324, is not quite 9V (supposed to be 1.5V less than V+). – To measure exactly what the maximum voltage is, disconnect the all components on the output of the LM 324, place ...
Kit Instructions
... Step 4 - Helpful Tips 1. LEDs have a specific direction they go (long side to positive). This is important because if the components are installed backwards, the circuit will not work and pieces may fail. 2. Do not trim leads before board is soldered and tested. 3. Be very careful of what is touchi ...
... Step 4 - Helpful Tips 1. LEDs have a specific direction they go (long side to positive). This is important because if the components are installed backwards, the circuit will not work and pieces may fail. 2. Do not trim leads before board is soldered and tested. 3. Be very careful of what is touchi ...
Fundamentals of Electric Circuits
... • A loop is any closed path in a circuit. • A network with b branches, n nodes, and l independent loops will satisfy the fundamental ...
... • A loop is any closed path in a circuit. • A network with b branches, n nodes, and l independent loops will satisfy the fundamental ...
555 Timer
... Step 2: The output voltage at (pin 3) goes up and the pin 7 is disconnected from R2. (Again, look at the switch in the FF) Step 3: C1 gets charged up through R1+R2. Step 4: The voltage across C1 goes up. Step 5: The voltage at pin 6 exceeds the voltag at pin 5. Step 6: The comparator sends a “high” ...
... Step 2: The output voltage at (pin 3) goes up and the pin 7 is disconnected from R2. (Again, look at the switch in the FF) Step 3: C1 gets charged up through R1+R2. Step 4: The voltage across C1 goes up. Step 5: The voltage at pin 6 exceeds the voltag at pin 5. Step 6: The comparator sends a “high” ...
Example 17 Use current division to determine the current i through
... So we can use a single resistor to replace the two resistors. The two 10 kΩ resistors have the same pair of nodes, hence they are in parallel. To combine the parallel resistors, we can take the reciprocal of the first resistance and take the reciprocal of the second one and add together, and then ta ...
... So we can use a single resistor to replace the two resistors. The two 10 kΩ resistors have the same pair of nodes, hence they are in parallel. To combine the parallel resistors, we can take the reciprocal of the first resistance and take the reciprocal of the second one and add together, and then ta ...
EE 101 Lab 4 Digital Signals
... A diode is a two-terminal semiconductor circuit element that allows electrical current to pass in only one direction. In effect it functions as a “flow valve” – current is allowed to pass in one direction through the diode, but is prevented from passing through in the opposite direction. Diodes are ...
... A diode is a two-terminal semiconductor circuit element that allows electrical current to pass in only one direction. In effect it functions as a “flow valve” – current is allowed to pass in one direction through the diode, but is prevented from passing through in the opposite direction. Diodes are ...
EE2003 Circuit Theory
... • A loop is any closed path in a circuit. • A network with b branches, n nodes, and l independent loops will satisfy the fundamental ...
... • A loop is any closed path in a circuit. • A network with b branches, n nodes, and l independent loops will satisfy the fundamental ...
File
... The system makes use of a LDR and a light source for detecting the token/coin, coin interrupt the beam of light for a second to generate a pulse which is detected by the IC NE556 (dual timer) at the pin number 6 and feed to the microcontroller which displays the number of counts in the form of pulse ...
... The system makes use of a LDR and a light source for detecting the token/coin, coin interrupt the beam of light for a second to generate a pulse which is detected by the IC NE556 (dual timer) at the pin number 6 and feed to the microcontroller which displays the number of counts in the form of pulse ...
2.3.3 DEMUX
... 1. As discussed in the Procedure, the un-multiplexed version of the circuit that displays the word OPEN uses 1.89 watts of power. On average, how much power does the multiplexed version use? For the sake of simplicity, you may assume that the 74LS139 requires no power. Only one display is on at any ...
... 1. As discussed in the Procedure, the un-multiplexed version of the circuit that displays the word OPEN uses 1.89 watts of power. On average, how much power does the multiplexed version use? For the sake of simplicity, you may assume that the 74LS139 requires no power. Only one display is on at any ...
More Resistors
... this lab. Be sure to answer all questions completely, and to get your instructor’s signature verifying your finished circuit. ...
... this lab. Be sure to answer all questions completely, and to get your instructor’s signature verifying your finished circuit. ...
other
... keypad into the microcontroller. • Microcontroller determines the correctness of the keycode. • Microcontroller generates a square wave to the power management circuit for 2s after keycode is entered, and give out control signal to LEDs, speaker, and ...
... keypad into the microcontroller. • Microcontroller determines the correctness of the keycode. • Microcontroller generates a square wave to the power management circuit for 2s after keycode is entered, and give out control signal to LEDs, speaker, and ...
Experiment 4: Op-Amp Circuits Objective: EQUIPMENT AND PARTS
... Operational amplifiers can be basically viewed as voltage amplifiers with very high open loop gain, very high input resistance, and very low output resistance. They are commonly available in an integrated circuit (IC) package. An IC can include many components such as transistors, diodes, resistors, ...
... Operational amplifiers can be basically viewed as voltage amplifiers with very high open loop gain, very high input resistance, and very low output resistance. They are commonly available in an integrated circuit (IC) package. An IC can include many components such as transistors, diodes, resistors, ...
Charlieplexing
![](https://commons.wikimedia.org/wiki/Special:FilePath/Sandorclock.jpg?width=300)
Charlieplexing is a technique for driving a multiplexed display in which relatively few I/O pins on a microcontroller are used to drive an array of LEDs. The method uses the tri-state logic capabilities of microcontrollers in order to gain efficiency over traditional multiplexing. Although it is more efficient in its use of I/O, there are issues that cause it to be more complicated to design and render it impractical for larger displays. These issues include duty cycle, current requirements and the forward voltages of the LEDs.