410KB - NZQA
... τ = RC = 4.5 × 400 = 1800 s The capacitor will take about 9000 s to discharge (5 time constants is 9000 s or reference to fact that its 63% discharged). This is too long. OR • E = ½CV 2 = ½ × 400 × 52 = 5000 J. This is less than the energy required. AND τ = RC = 4.5 × 400 = 1800 s The capacitor will ...
... τ = RC = 4.5 × 400 = 1800 s The capacitor will take about 9000 s to discharge (5 time constants is 9000 s or reference to fact that its 63% discharged). This is too long. OR • E = ½CV 2 = ½ × 400 × 52 = 5000 J. This is less than the energy required. AND τ = RC = 4.5 × 400 = 1800 s The capacitor will ...
Chapter 24: Capacitance and Dielectrics and Ch. 26
... Maxwell thought of the capacitor as a flow device, like a resistor so a “displacement current” would flow between the plates of the capacitor like this ...
... Maxwell thought of the capacitor as a flow device, like a resistor so a “displacement current” would flow between the plates of the capacitor like this ...
experiment number 9 inductor current
... The large value of R1 assures that, vL, the voltage across the inductor, is small compared to v1. Since vL is small compared to v1 the current, i, will be proportional to v1. 2. Set the oscilloscope triggering to positive slope, and channel 1. Set the vertical mode to dual trace. Set the signal gene ...
... The large value of R1 assures that, vL, the voltage across the inductor, is small compared to v1. Since vL is small compared to v1 the current, i, will be proportional to v1. 2. Set the oscilloscope triggering to positive slope, and channel 1. Set the vertical mode to dual trace. Set the signal gene ...
Purpose:
... The goals of this laboratory exercise are to learn how to: A. use some basic pieces of laboratory equipment, including 1. a circuit breadboard, 2. a dc power supply, and 3. a digital multimeter; (DMM) B. use a breadboard to construct circuits from a circuit schematic and measure electrical quantitie ...
... The goals of this laboratory exercise are to learn how to: A. use some basic pieces of laboratory equipment, including 1. a circuit breadboard, 2. a dc power supply, and 3. a digital multimeter; (DMM) B. use a breadboard to construct circuits from a circuit schematic and measure electrical quantitie ...
Displacement and position sensors
... shape due to external loading, the resistance of strain gauge element changes. This change in resistance can be detected by a using a Wheatstone’s resistance bridge as shown in Figure 2.2.4. In the balanced bridge we can have a relation, R2/ R1 = Rx / R3 ...
... shape due to external loading, the resistance of strain gauge element changes. This change in resistance can be detected by a using a Wheatstone’s resistance bridge as shown in Figure 2.2.4. In the balanced bridge we can have a relation, R2/ R1 = Rx / R3 ...
Laboratory Exercise #4 Variable Resistors
... Before making any voltage measurements, be sure the DMM function switch is set to the VDC Function. Before making any resistance measurements, be sure the power supply is turned off and disconnected from the circuit and the DMM function is set to the Resistance Function. Potentiometer See Figure A, ...
... Before making any voltage measurements, be sure the DMM function switch is set to the VDC Function. Before making any resistance measurements, be sure the power supply is turned off and disconnected from the circuit and the DMM function is set to the Resistance Function. Potentiometer See Figure A, ...
capacitors and inductors
... decreases as frequency increases. If we apply a DC voltage to a capacitor, we get a quick surge of current as the capacitor charges. Eventually the charge on the capacitor equals the applied voltage, and current stops flowing. When we remove the applied voltage, the charged capacitor discharges, giv ...
... decreases as frequency increases. If we apply a DC voltage to a capacitor, we get a quick surge of current as the capacitor charges. Eventually the charge on the capacitor equals the applied voltage, and current stops flowing. When we remove the applied voltage, the charged capacitor discharges, giv ...
Chapter 3 Chapter 3 Objectives
... Measuring Voltage, Current, and Resistance • An ideal meter has no effect on the circuit variable being measured. • That means when an ammeter is placed in series to measure the current through an element, it should have an equivalent resistance of 0 Ω. • That means when a voltmeter is placed in par ...
... Measuring Voltage, Current, and Resistance • An ideal meter has no effect on the circuit variable being measured. • That means when an ammeter is placed in series to measure the current through an element, it should have an equivalent resistance of 0 Ω. • That means when a voltmeter is placed in par ...
9 – The Power MOSFET 3
... and turn-off characteristics of the MOSFET and (b) simplified equivalent circuit. A. Turn-on Analysis Let us assume initially the device is off, the load current, I0, flows through D as shown in the Fig. 4.18a vGG = 0. The voltage vDS = VDD and iG = iD. At t = t0, the voltage vGG is applied as shown ...
... and turn-off characteristics of the MOSFET and (b) simplified equivalent circuit. A. Turn-on Analysis Let us assume initially the device is off, the load current, I0, flows through D as shown in the Fig. 4.18a vGG = 0. The voltage vDS = VDD and iG = iD. At t = t0, the voltage vGG is applied as shown ...
Comparing Voltage Drops and Currents in Parallel Lab
... Demonstrate how to use the voltage probes to determine a voltage difference between two points. Make sure students are using the probes correctly and not wiring the voltage probes into the circuit. Make sure the ammeters are being wired into the circuit, in series with the resistors. Combining t ...
... Demonstrate how to use the voltage probes to determine a voltage difference between two points. Make sure students are using the probes correctly and not wiring the voltage probes into the circuit. Make sure the ammeters are being wired into the circuit, in series with the resistors. Combining t ...
Current Electricity Problem Packet
... 19. An electric dryer consumes 6.0 × 106 joules of electrical energy when operating at 220 volts for 1.8 × 103 seconds. How much current does the dryer use during operation? ...
... 19. An electric dryer consumes 6.0 × 106 joules of electrical energy when operating at 220 volts for 1.8 × 103 seconds. How much current does the dryer use during operation? ...
GP/IP - Uplift Meridian
... Having three 4-Ω resistors in parallel is equivalent to having one _____Ω resistor. ...
... Having three 4-Ω resistors in parallel is equivalent to having one _____Ω resistor. ...
Unijunction Transistor(UJT) - Corporate Group of Institutes
... As long as IB = 0, the circuit of behaves as a voltage divider. Assume now that vE is gradually increased from zero using an emitter supply VEE . The diode remains reverse biased till vE voltage is less than ƞVBB and no emitter current flows except leakage current. The emitter diode will be revers ...
... As long as IB = 0, the circuit of behaves as a voltage divider. Assume now that vE is gradually increased from zero using an emitter supply VEE . The diode remains reverse biased till vE voltage is less than ƞVBB and no emitter current flows except leakage current. The emitter diode will be revers ...
ABSTRACT - 123SeminarsOnly.com
... PPTC resettable fuses are designed for today’s demanding electronic and electrical industries. The concept of a self-resetting fuse of course predates this technology. Bimetal fuses, for example are widely used in appliances such as hairdryers, but these are generally large current devices. PPTC res ...
... PPTC resettable fuses are designed for today’s demanding electronic and electrical industries. The concept of a self-resetting fuse of course predates this technology. Bimetal fuses, for example are widely used in appliances such as hairdryers, but these are generally large current devices. PPTC res ...
Memristor
The memristor (/ˈmɛmrɨstər/; a portmanteau of memory resistor) was a term coined in 1971 by circuit theorist Leon Chua as a missing non-linear passive two-terminal electrical component relating electric charge and magnetic flux linkage. The operation of RRAM devices was recently connected to the memristor concept According to the characterizing mathematical relations, the memristor would hypothetically operate in the following way: The memristor's electrical resistance is not constant but depends on the history of current that had previously flowed through the device, i.e., its present resistance depends on how much electric charge has flowed in what direction through it in the past. The device remembers its history - the so-called non-volatility property: When the electric power supply is turned off, the memristor remembers its most recent resistance until it is turned on again.Leon Chua has more recently argued that the definition could be generalized to cover all forms of two-terminal non-volatile memory devices based on resistance switching effects although some experimental evidence contradicts this claim, since a non-passive nanobattery effect is observable in resistance switching memory. Chua also argued that the memristor is the oldest known circuit element, with its effects predating the resistor, capacitor and inductor.In 2008, a team at HP Labs claimed to have found Chua's missing memristor based on an analysis of a thin film of titanium dioxide; the HP result was published in Nature. The memristor is currently under development by various teams including Hewlett-Packard, SK Hynix and HRL Laboratories.These devices are intended for applications in nanoelectronic memories, computer logic and neuromorphic/neuromemristive computer architectures. In October 2011, the HP team announced the commercial availability of memristor technology within 18 months, as a replacement for Flash, SSD, DRAM and SRAM. Commercial availability of new memory was more recently estimated as 2018. In March 2012, a team of researchers from HRL Laboratories and the University of Michigan announced the first functioning memristor array built on a CMOS chip.