Resistors Connected in Series and in Parallel
... If a battery with voltage V is placed across resistors connected in parallel, the battery “sees” a single equivalent resistance R placed across its terminals. To find this equivalent resistance note we need Kirchhoff’s junction rule: ...
... If a battery with voltage V is placed across resistors connected in parallel, the battery “sees” a single equivalent resistance R placed across its terminals. To find this equivalent resistance note we need Kirchhoff’s junction rule: ...
VA3DIW, Vackar VFO, Vackar oscillator
... LM317 is good for car battery chargers and that's it. Rather use MAC01 type for voltage regulator with low noise, even LM7806 with 50uV of noise is fine. Expect 80dB spur free spectrum. The TFT caps are very good. The mechanical design has to be stable. The coupling with buffer is loose at low imped ...
... LM317 is good for car battery chargers and that's it. Rather use MAC01 type for voltage regulator with low noise, even LM7806 with 50uV of noise is fine. Expect 80dB spur free spectrum. The TFT caps are very good. The mechanical design has to be stable. The coupling with buffer is loose at low imped ...
Breadboards and Circuits
... • Along with resistors and inductors, they are one of the most fundamental passive components we use. • What makes capacitors special is their ability to store energy; they’re like a fully charged electric battery. • Measured in farads – unit of electrical capacitance (the ability of a body to store ...
... • Along with resistors and inductors, they are one of the most fundamental passive components we use. • What makes capacitors special is their ability to store energy; they’re like a fully charged electric battery. • Measured in farads – unit of electrical capacitance (the ability of a body to store ...
Model Answer
... is a balanced Y in parallel with a balanced ∆. The phase impedance of the Y is 4 + j 3 Ω / ϕ and the phase impedance of the ∆ is 3 – j 9 Ω / ϕ. The line impedance is 1.4 + j 0.8 Ω / ϕ. Draw the single phase equivalent circuit and use it to calculate the line voltage at the load in the a-phase. ...
... is a balanced Y in parallel with a balanced ∆. The phase impedance of the Y is 4 + j 3 Ω / ϕ and the phase impedance of the ∆ is 3 – j 9 Ω / ϕ. The line impedance is 1.4 + j 0.8 Ω / ϕ. Draw the single phase equivalent circuit and use it to calculate the line voltage at the load in the a-phase. ...
Electrical_Machines_Lab_Upgrading_Proposal_Fall_2009
... The setups and kits should have all the necessary safety and protection features such as safety covers for rotational parts, short circuit protection, overload current protection, over voltage protection, and under-voltage protection etc. ...
... The setups and kits should have all the necessary safety and protection features such as safety covers for rotational parts, short circuit protection, overload current protection, over voltage protection, and under-voltage protection etc. ...
2-Channel Power Amplifier for High
... ▶▶ Mono-bridgeable amplifier channels; switch for linking analog signal inputs ▶▶ AC inrush current limiting; channel output voltage limiting ▶▶ Digital gain attenuator for gain/sensitivity selection ✓✓ Front panel interactive LCD display for local access and configuration ✓✓ SmartCard reader/writer ...
... ▶▶ Mono-bridgeable amplifier channels; switch for linking analog signal inputs ▶▶ AC inrush current limiting; channel output voltage limiting ▶▶ Digital gain attenuator for gain/sensitivity selection ✓✓ Front panel interactive LCD display for local access and configuration ✓✓ SmartCard reader/writer ...
Temperature sensor ic LM35CZ and LM35DZ
... 1. Unless otherwise noted, these specifications apply: -40°≤TJ≤ + 110°C for the LM35C and 0°≤TJ≤+100°C for the LM35D. VS = +5Vdc and ILOAD = 50µA, in the circuit of Figure 2. These specifications also apply from +2°C to TMAX in the circuit of Figure 1. Specifications in boldface apply over the full ...
... 1. Unless otherwise noted, these specifications apply: -40°≤TJ≤ + 110°C for the LM35C and 0°≤TJ≤+100°C for the LM35D. VS = +5Vdc and ILOAD = 50µA, in the circuit of Figure 2. These specifications also apply from +2°C to TMAX in the circuit of Figure 1. Specifications in boldface apply over the full ...
16spMid1Csoln
... b. Write an expression for the output resistance in terms of IB and VB go = I0 VA^3/2 / VB = IB /(VB*ln(VB)); ro= (ln(VB)*VB) / IB ...
... b. Write an expression for the output resistance in terms of IB and VB go = I0 VA^3/2 / VB = IB /(VB*ln(VB)); ro= (ln(VB)*VB) / IB ...
X/R Ratio - Powell Industries
... highly inductive, the X/R ratio is generally significantly above unity in any utility or industrial power system. Why is the X/R ratio important? Its importance is that it affects the level of short circuit current a circuit breaker is required to interrupt. When a short circuit occurs, the rms valu ...
... highly inductive, the X/R ratio is generally significantly above unity in any utility or industrial power system. Why is the X/R ratio important? Its importance is that it affects the level of short circuit current a circuit breaker is required to interrupt. When a short circuit occurs, the rms valu ...
COMP3221: Microprocessors and Embedded Systems
... Consider changing the output code of a 8-bit D/A from 10000000 to 01111111. These code are adjacent, and we expect the output to go from one-half full-scale to one resolution value less than that. However, if the switches can switch faster from a one to a zero, the output code will go through a tr ...
... Consider changing the output code of a 8-bit D/A from 10000000 to 01111111. These code are adjacent, and we expect the output to go from one-half full-scale to one resolution value less than that. However, if the switches can switch faster from a one to a zero, the output code will go through a tr ...
PPT
... Modern computers are powered by electricity, using electrical signals to store and manipulate information The components of a computer require electrical power to carry out their assigned task • Electricity generates the light that shines through a computer screen, illuminating the individual pixels ...
... Modern computers are powered by electricity, using electrical signals to store and manipulate information The components of a computer require electrical power to carry out their assigned task • Electricity generates the light that shines through a computer screen, illuminating the individual pixels ...
LP Series 400V CE
... • Bypass supply voltage tolerance: +/- 10% (adjustable) • Bypass supply frequency tolerance: +/- 5% (adjustable) • Output filter provides mains filtering and power factor correction from 0.8 to 0.9 (dep. on load) ...
... • Bypass supply voltage tolerance: +/- 10% (adjustable) • Bypass supply frequency tolerance: +/- 5% (adjustable) • Output filter provides mains filtering and power factor correction from 0.8 to 0.9 (dep. on load) ...
Lecture #1
... • Polarity reference for voltage can be indicated by plus and minus signs • Reference direction for the current is indicated by an arrow ...
... • Polarity reference for voltage can be indicated by plus and minus signs • Reference direction for the current is indicated by an arrow ...
701-2(4x) - Jewell Instruments
... Model A701-2A/B(4X) IP65 Weatherproof Platform Tiltmeter The model A701-2(4X) Weatherproof Platform Tiltmeter is a precision analog tiltmeter with resolution to 1 μradian or better. Units are rated IP65 waterproof for use in wet, humid, and corrosive environments, and easily install on any horizonta ...
... Model A701-2A/B(4X) IP65 Weatherproof Platform Tiltmeter The model A701-2(4X) Weatherproof Platform Tiltmeter is a precision analog tiltmeter with resolution to 1 μradian or better. Units are rated IP65 waterproof for use in wet, humid, and corrosive environments, and easily install on any horizonta ...
Measurements on a Tube Radio
... The All-American-Five has no transformer isolation from the AC power line. The electrical common connection in the radio, which connects to the metal chassis, is connected to one side of the AC line cord. The power cord on the AA5 is not polarized – it can be plugged into an AC outlet in two differe ...
... The All-American-Five has no transformer isolation from the AC power line. The electrical common connection in the radio, which connects to the metal chassis, is connected to one side of the AC line cord. The power cord on the AA5 is not polarized – it can be plugged into an AC outlet in two differe ...
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.