water pressure - the second science-edu is born
... supply. If you want to measure the resistance of a particular component, you must take it out of the circuit altogether and test it separately. Ohmmeters work by passing a small current through the component and measuring the voltage produced. If you try this with the component connected into a circ ...
... supply. If you want to measure the resistance of a particular component, you must take it out of the circuit altogether and test it separately. Ohmmeters work by passing a small current through the component and measuring the voltage produced. If you try this with the component connected into a circ ...
SIMPLE ELECTRIC CIRCUITS Objectives: References: Introduction:
... disconnected and then reconnected? What do you predict will happen if a wire is added, connected across the terminals of B? Try it our and see if your predictions are correct. Does the intensity of lamp A change with any of these changes? Now add a third cluster in series, as in Figure 9. What happe ...
... disconnected and then reconnected? What do you predict will happen if a wire is added, connected across the terminals of B? Try it our and see if your predictions are correct. Does the intensity of lamp A change with any of these changes? Now add a third cluster in series, as in Figure 9. What happe ...
Open Access proceedings Journal of Physics: Conference series
... measurement done with two electrodes will result in the real impedance of the MUT plus the impedance of the electrodes. In order to overcome this, the four electrode interface, where an outer pair of electrodes is used for the application of the excitation signal (applicator electrodes) and the inne ...
... measurement done with two electrodes will result in the real impedance of the MUT plus the impedance of the electrodes. In order to overcome this, the four electrode interface, where an outer pair of electrodes is used for the application of the excitation signal (applicator electrodes) and the inne ...
I. Introduction
... ballast to operate correctly. The ballast is additional equipment connected between the power line and the discharge lamp. The ballast has two main functions: to guarantee lamps ignition through the application of a high voltage pulse between the lamp electrodes and to limit the current that will ci ...
... ballast to operate correctly. The ballast is additional equipment connected between the power line and the discharge lamp. The ballast has two main functions: to guarantee lamps ignition through the application of a high voltage pulse between the lamp electrodes and to limit the current that will ci ...
Bi-directional switch
... In three phase inverters harmonics of the line-to-line voltages are of concern. The harmonics in the output of any one of the legs, for example vAN in Fig.4 are identical to the harmonics in vAo in Fig. 2., where only the odd harmonics exit as side bands, centered around mf and its multiples, if mf ...
... In three phase inverters harmonics of the line-to-line voltages are of concern. The harmonics in the output of any one of the legs, for example vAN in Fig.4 are identical to the harmonics in vAo in Fig. 2., where only the odd harmonics exit as side bands, centered around mf and its multiples, if mf ...
MPT-440 Metering Pulse Totalizer Specification Sheet
... The MPT-440 incorporates a peak demand software module that tracks the average kW demand in any interval and captures the peak demand for later reading in non-volatile memory. A separate demand reset allows for resetting of the peak demand module only. An EOI signal is provided by one of the four me ...
... The MPT-440 incorporates a peak demand software module that tracks the average kW demand in any interval and captures the peak demand for later reading in non-volatile memory. A separate demand reset allows for resetting of the peak demand module only. An EOI signal is provided by one of the four me ...
Circuit Note CN-0065
... A sample was tested during initial release of the PLC Demo system (V07) and met the test compliances listed in this table. These results should be viewed as typical data taken at 25°C. For these tests, the DAC outputs were connected to the ADC inputs, that is, DAC_CH2 to ADC_CH2, DAC_CH3 to ADC_CH3, ...
... A sample was tested during initial release of the PLC Demo system (V07) and met the test compliances listed in this table. These results should be viewed as typical data taken at 25°C. For these tests, the DAC outputs were connected to the ADC inputs, that is, DAC_CH2 to ADC_CH2, DAC_CH3 to ADC_CH3, ...
LTC1051/LTC1053 - Dual/Quad Precision Zero
... alias ratio” cannot be increased by just boosting the input signal amplitude. However, when the input AC signal frequency well exceeds the clock frequency, the amplitude of the alias signals does not directly scale with the input amplitude. The “signal to alias ratio” increases when the output swing ...
... alias ratio” cannot be increased by just boosting the input signal amplitude. However, when the input AC signal frequency well exceeds the clock frequency, the amplitude of the alias signals does not directly scale with the input amplitude. The “signal to alias ratio” increases when the output swing ...
Chapter 3 Special
... We now take the known base voltage and subtract VBE to find out what is dropped across RE. Knowing the voltage across RE we can apply Ohm’s law to determine the current in the collector-emitter side of the circuit. Remember the current in the base-emitter circuit is much smaller, so much in fact we ...
... We now take the known base voltage and subtract VBE to find out what is dropped across RE. Knowing the voltage across RE we can apply Ohm’s law to determine the current in the collector-emitter side of the circuit. Remember the current in the base-emitter circuit is much smaller, so much in fact we ...
Audio Speech Processor
... The circuit consists of an audio preamplifier and a feedback amplifier for the necessary speech processing. To use the speech processor, S1 must be closed first. Leaving S1 open gives us a basic preamplified microphone with R5 as the gain control. When S1 is closed, voice peaks from the feedback amp ...
... The circuit consists of an audio preamplifier and a feedback amplifier for the necessary speech processing. To use the speech processor, S1 must be closed first. Leaving S1 open gives us a basic preamplified microphone with R5 as the gain control. When S1 is closed, voice peaks from the feedback amp ...
X5000A3
... This signal is an opto-isolated open collector signal referenced to LOGIC_GND within each rectifier. TEMP_FAIL is a normally closed signal which signifies the presence of an alarm with high impedance. TEMP_FAIL indicates that the rectifier module has shut down due to an over-temperature condition. R ...
... This signal is an opto-isolated open collector signal referenced to LOGIC_GND within each rectifier. TEMP_FAIL is a normally closed signal which signifies the presence of an alarm with high impedance. TEMP_FAIL indicates that the rectifier module has shut down due to an over-temperature condition. R ...
FDD5614P 60V P-Channel PowerTrench MOSFET
... support device or system, or to affect its safety or failure to perform when properly used in accordance with instructions for use provided in the labeling, can be effectiveness. reasonably expected to result in significant injury to the user. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet ...
... support device or system, or to affect its safety or failure to perform when properly used in accordance with instructions for use provided in the labeling, can be effectiveness. reasonably expected to result in significant injury to the user. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet ...
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.