EXPERIMENT 12 THE PHOTOELECTRIC EFFECT AND PLANCK`S
... emitted from the cathode will not have enough energy to reach the anode and will be repelled back to the cathode. At this voltage called the "stopping potential," Vs, the electron current from the cathode to the anode will cease to flow. At this voltage the maximum kinetic energy of the electrons is ...
... emitted from the cathode will not have enough energy to reach the anode and will be repelled back to the cathode. At this voltage called the "stopping potential," Vs, the electron current from the cathode to the anode will cease to flow. At this voltage the maximum kinetic energy of the electrons is ...
Ch 7: Static Charge and Electron Transfer Ch 8: Ohm`s Law
... 2. What happens to the total resistance in a series circuit when resistors are added? 3. How is voltage and current distributed among the loads in a parallel circuit? ...
... 2. What happens to the total resistance in a series circuit when resistors are added? 3. How is voltage and current distributed among the loads in a parallel circuit? ...
Design of amplifier with rail-to-rail CMR with 1V power supply
... increasing battery- and solar-powered systems demand more and more circuits to work at very low supply voltages. However, while digital circuits can work without too many problems in such conditions, new analog architectures must be developed to keep similar performance with respect to operation at ...
... increasing battery- and solar-powered systems demand more and more circuits to work at very low supply voltages. However, while digital circuits can work without too many problems in such conditions, new analog architectures must be developed to keep similar performance with respect to operation at ...
600 Watt SMB Transient Voltage Suppressor, 100 V, Unidirectional
... condition associated with the inductance of the device and the inductance of the connection method. The capacitive effect is of minor importance in the parallel protection scheme because it only produces a time delay in the transition from the operating voltage to the clamp voltage as shown in Figur ...
... condition associated with the inductance of the device and the inductance of the connection method. The capacitive effect is of minor importance in the parallel protection scheme because it only produces a time delay in the transition from the operating voltage to the clamp voltage as shown in Figur ...
ds26ls31cm
... Note 1: ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices should be operated at these limits. The tables of ‘‘Electrical Characteristics’’ provide conditions for actual device operation. Note 2: Unle ...
... Note 1: ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices should be operated at these limits. The tables of ‘‘Electrical Characteristics’’ provide conditions for actual device operation. Note 2: Unle ...
![L 25 Electricity and Magnetism [3] Electric current (symbol I](http://s1.studyres.com/store/data/007903713_1-7c777a1a37e6fccaeb2ed3a9724ccb92-300x300.png)
L 25 Electricity and Magnetism [3] Electric current (symbol I
... bulb connected to a 120 V power line? • Solution: P = 60 W = I V = I 120 so I = 0.5 Amps (A) • What is the resistance of the bulb? • Solution: V = I R 120 V = ½ A R so R = 240 , or R = V/I ...
... bulb connected to a 120 V power line? • Solution: P = 60 W = I V = I 120 so I = 0.5 Amps (A) • What is the resistance of the bulb? • Solution: V = I R 120 V = ½ A R so R = 240 , or R = V/I ...
TDE1747
... designed for high current and high voltage applications, specifically to drive lamps, relays, stepping motors. This device is essentially blow-out proof. Current limiting is available to limit the peak output current to safe values. Adjustment only requires one external resistor. In addition, therma ...
... designed for high current and high voltage applications, specifically to drive lamps, relays, stepping motors. This device is essentially blow-out proof. Current limiting is available to limit the peak output current to safe values. Adjustment only requires one external resistor. In addition, therma ...
EUP3651 4-Channel, 1X/1.5X Charge Pump White LED Driver
... enter a thermal protection shutdown mode. When the device temperature drops by about 20°C the device will resume normal operation. LED Selection LEDs with forward voltages (VF) ranging from 1.3V to 4V may be used with the EUP3651. Selecting LEDs with lower VF is recommended in order to improve the e ...
... enter a thermal protection shutdown mode. When the device temperature drops by about 20°C the device will resume normal operation. LED Selection LEDs with forward voltages (VF) ranging from 1.3V to 4V may be used with the EUP3651. Selecting LEDs with lower VF is recommended in order to improve the e ...
Save power and space with I S-input Class-D audio amplifier NXP digital I
... Optional control tokens embedded in the audio stream can be used to control, gain, clip behavior, and output slope. Controlling the output slope reduces the radiated emission by a factor of 10 dB. The second-order closed-loop architecture, combined with sophisticated built-in D/A-conversion, provide ...
... Optional control tokens embedded in the audio stream can be used to control, gain, clip behavior, and output slope. Controlling the output slope reduces the radiated emission by a factor of 10 dB. The second-order closed-loop architecture, combined with sophisticated built-in D/A-conversion, provide ...
ht tp: //qpa BASIC ELECTRICAL ENGINEERING
... Write a short note on back emf. c) A 4-pole shunt generator supplies 80A at a terminal voltage of 400 V. If armature resistance is 0·04 ohm and shunt-field resistance is 80 ohms, find generated emf. Take voltage drop per brush as 1 volt. ...
... Write a short note on back emf. c) A 4-pole shunt generator supplies 80A at a terminal voltage of 400 V. If armature resistance is 0·04 ohm and shunt-field resistance is 80 ohms, find generated emf. Take voltage drop per brush as 1 volt. ...
product features
... input line fuses, a compact input filter and a system of 9 bidirectional switches that are arranged in a matrix, to convert a three-phase AC input voltage directly into a three-phase AC ...
... input line fuses, a compact input filter and a system of 9 bidirectional switches that are arranged in a matrix, to convert a three-phase AC input voltage directly into a three-phase AC ...
docx - Seattle Central College
... The output of the 555 can also sink current, it can supply power by allowing current to flow into it. The following circuit is similar to the last one, but with the 555 output acting as a sink instead of a source: ...
... The output of the 555 can also sink current, it can supply power by allowing current to flow into it. The following circuit is similar to the last one, but with the 555 output acting as a sink instead of a source: ...
Chapter 5: Resistors - Mt. San Antonio College
... •Resistance is given by the following equation ...
... •Resistance is given by the following equation ...
Lect19
... Since the current and VL are 90 degrees out of phase, when the current is at a maximum, VL will be at 0. When the capacitor is fully charged, the current through the circuit will be 0, and the magnitude of L will be at a maximum. VL will actually be at a minimum because VC and VL are 180 degrees out ...
... Since the current and VL are 90 degrees out of phase, when the current is at a maximum, VL will be at 0. When the capacitor is fully charged, the current through the circuit will be 0, and the magnitude of L will be at a maximum. VL will actually be at a minimum because VC and VL are 180 degrees out ...
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.