unit d – electricity
... • The two most common resistors are the wirewound and carbon-composition types. The colored strips on a resistor usually indicate the level of resistance and quality. ...
... • The two most common resistors are the wirewound and carbon-composition types. The colored strips on a resistor usually indicate the level of resistance and quality. ...
ppt - EECS
... Click any node to display voltage waveform (cursor is a red voltage probe) Click and hold any node (red probe appears) then drag to another node and release when black probe appears. Displays voltage difference between the selected nodes. Hover over any symbol lead until current probe appears and Cl ...
... Click any node to display voltage waveform (cursor is a red voltage probe) Click and hold any node (red probe appears) then drag to another node and release when black probe appears. Displays voltage difference between the selected nodes. Hover over any symbol lead until current probe appears and Cl ...
2SD2670
... otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design. ...
... otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design. ...
Passive-Optical Person Detector
... loop. The further the output voltage rises (above about 0.6 V) the more transistor T2 conducts. T2 thus forms a variable load for phototransistor T1. As the illumination increases, more current flows through the phototransistor. T2 then also turns more fully on, keeping the voltage at the output of ...
... loop. The further the output voltage rises (above about 0.6 V) the more transistor T2 conducts. T2 thus forms a variable load for phototransistor T1. As the illumination increases, more current flows through the phototransistor. T2 then also turns more fully on, keeping the voltage at the output of ...
Physics 202 Chapter 33 Nov 1, 2007 AC circuits On whiteboard
... same frequency regardless of the value of R As R decreases, the curve becomes narrower and taller Theoretically, if R = 0 the current would be infinite at resonance ...
... same frequency regardless of the value of R As R decreases, the curve becomes narrower and taller Theoretically, if R = 0 the current would be infinite at resonance ...
Slide 1
... to get brighter lights. Light bulbs sold in the USA are intended for a 120 V parallel circuit, and in these circuits higher wattage means brighter bulbs. However, if you wire the same bulbs in series, or use then in European 240 V circuits, you will not draw the wattage stamped on the bulb. ...
... to get brighter lights. Light bulbs sold in the USA are intended for a 120 V parallel circuit, and in these circuits higher wattage means brighter bulbs. However, if you wire the same bulbs in series, or use then in European 240 V circuits, you will not draw the wattage stamped on the bulb. ...
34.1 Flow of Charge
... • Dry skin - 24V barely a tingle/ .001A • Moist – 24V painful/ .005A • 120V – cause death – especially if bare feet in a wet bathtub, reducing resistance • To receive shock there has to be a difference in potential ...
... • Dry skin - 24V barely a tingle/ .001A • Moist – 24V painful/ .005A • 120V – cause death – especially if bare feet in a wet bathtub, reducing resistance • To receive shock there has to be a difference in potential ...
7781 AMPLIFIER AE Techron
... f Lowest cost 7700 Series amplifier with Bi-LevelTM Smart Power supply. High Voltage & High Current with less heat. f Over 4,000 watts peak output; 2858 watts rms into a 2 ohm load f 40 mSec pulses of up to 150 amperes peak into a 1 ohm load f Can be connected in series with other 7781 amplifiers f ...
... f Lowest cost 7700 Series amplifier with Bi-LevelTM Smart Power supply. High Voltage & High Current with less heat. f Over 4,000 watts peak output; 2858 watts rms into a 2 ohm load f 40 mSec pulses of up to 150 amperes peak into a 1 ohm load f Can be connected in series with other 7781 amplifiers f ...
Chapter 9: Magnetism & Inductance
... • To influence the flow of electrons (current), you can increase or decrease the ease at which they flow • Hallway analogy – Long, narrow hallway limits the number of people which can walk by a point in any given unit of time – Resistors work much the same way ...
... • To influence the flow of electrons (current), you can increase or decrease the ease at which they flow • Hallway analogy – Long, narrow hallway limits the number of people which can walk by a point in any given unit of time – Resistors work much the same way ...
POWER ELECTRONICS NOTES 10ES45
... For first quadrant operation, CH1 is ON or D2 conducts. For second quadrant operation, CH2 is ON or D1 conducts. When CH1 is ON, the load current is positive. The output voltage is equal to ‘V’ & the load receives power from the source. When CH1 is turned OFF, energy stored in inductance L forces cu ...
... For first quadrant operation, CH1 is ON or D2 conducts. For second quadrant operation, CH2 is ON or D1 conducts. When CH1 is ON, the load current is positive. The output voltage is equal to ‘V’ & the load receives power from the source. When CH1 is turned OFF, energy stored in inductance L forces cu ...
Passive Bandpass and Notch Filters
... Hz) where the power is ½ of the maximum output power (the -3 dB point) is the bandwidth of the filter – Maximum power to output occurs at fo =QB, where Q is the quality factor of the filter. • A high Q filter has a small bandwidth, almost no other signals except for the one at the center frequency w ...
... Hz) where the power is ½ of the maximum output power (the -3 dB point) is the bandwidth of the filter – Maximum power to output occurs at fo =QB, where Q is the quality factor of the filter. • A high Q filter has a small bandwidth, almost no other signals except for the one at the center frequency w ...
Series and Parallel Circuits - Mrs. Anthony
... Draw a series circuit with two 1.5 V batteries, 3 resistors, and a current of 0.5 A. What is the total voltage of the circuit? What is the resistance of each resistor? What is the voltage drop across each resistor? Label on your ...
... Draw a series circuit with two 1.5 V batteries, 3 resistors, and a current of 0.5 A. What is the total voltage of the circuit? What is the resistance of each resistor? What is the voltage drop across each resistor? Label on your ...
electronic interface control
... can be mounted on a standard DIN rail or Series rail. Brand can also package these controls for harsh environment use on mobile equipment. This control will take the industry standard 4-20 mA or 0-10 VDC signal and convert it to a linear Pulse Width Modulated (PWM) output. This signal may be found i ...
... can be mounted on a standard DIN rail or Series rail. Brand can also package these controls for harsh environment use on mobile equipment. This control will take the industry standard 4-20 mA or 0-10 VDC signal and convert it to a linear Pulse Width Modulated (PWM) output. This signal may be found i ...
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.