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LM6172 - Brandeis
LM6172 - Brandeis

... the signal traces should be short and wide to provide low inductance and low impedance paths. Any unused board space needs to be grounded to reduce stray signal pickup. Critical components should also be grounded at a common point to eliminate voltage drop. Sockets add capacitance to the board and c ...
PIECAL Model 334 - PIE Calibrators
PIECAL Model 334 - PIE Calibrators

... • POWER & MEASURE 2 WIRE TRANSMITTERS The PIECAL Model 334 can simultaneously output 24V DC to power any and all devices in a process loop using the internal batteries and the internal switching power supply, while measuring the output of a 2 Wire Transmitter and any other loop devices. This is hand ...
Go Picture These!
Go Picture These!

Vehicle Power Plant and Transmission Characteristics
Vehicle Power Plant and Transmission Characteristics

... increases. The magnitude of torque at a given slip also increases with increase in slip with the exception of unity slip (starting condition). fs=10Hz fs=30Hz fs=50Hz ...
JYesf'em Electric - AmericanRadioHistory.Com
JYesf'em Electric - AmericanRadioHistory.Com

How to use the design tool (Ver 1.0) for FAN7631 www.fairchildsemi.com 1
How to use the design tool (Ver 1.0) for FAN7631 www.fairchildsemi.com 1

SCOPE PATTERNS
SCOPE PATTERNS

... OSCILLOSCOPE TESTER An oscilloscope is like a voltmeter. It is connected across, or in parallel, with the circuit being tested, and its most important use is to give information about voltage changes in a circuit againts time. ...
4: Capacitors
4: Capacitors

... uncharged capacitor C begins to charge. How much charge is stored in the capacitor at t=1 second? RC = 1ms A: 0 µC One second is 1000x the RC time B: 1 µC constant, so the capacitor will be fully charged, no current will be flowing C: 10 µC and thus the voltage across the capacitor is 10V. By the de ...
Dealing With Static Discharge In Polar Environments
Dealing With Static Discharge In Polar Environments

Differential Capacitance-to-Digital Converter Utilizing Time
Differential Capacitance-to-Digital Converter Utilizing Time

... CDC circuits, some critical shortcomings occur. One of these problems is that voltage references become easily unstable in the environment noise such as supply voltage fluctuations, so that quantization of voltage is less accurate [3]. But we use a time interval instead of a voltage as an intermedia ...
ASSIGNMENT MEELC303 1 A 1500 nF capacitor is connected in
ASSIGNMENT MEELC303 1 A 1500 nF capacitor is connected in

... 2 Find the speed that a conductor of length 120mm must be moved at right angles to a magnetic field of flux density 0.6 T to induce in it an e.m.f. of 1.8V [25m/s] 3 A 25 cm long conductor moves at a uniform speed of 8 m/s through a uniform magnetic field of flux density 1.2 T. Determine the current ...
AQ 1000 – Arc Quenching System AQ 1000 Benefits
AQ 1000 – Arc Quenching System AQ 1000 Benefits

... total arcing time to 3ms and to minimize or even eliminate the arcing fault thermal and pressure damaging effects. In most applications this will result in a calorie/cm2 energy release of less than 1. The AQ 1000 is fully reusable allowing for full system testing at site. ...
ST3243EB
ST3243EB

... All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and service ...
High performance Flying Capacitor based Multilevel Inverter fed
High performance Flying Capacitor based Multilevel Inverter fed

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Chapter 24

... b) What potential difference would be required across the same two capacitors connected in series in order that the combination store the same energy as in (a)? 10. A 16-pF parallel-plate capacitor is charged by a 10-V battery. If each plate of the capacitor has an area of 5 cm2, what is the energy ...
Simple novice transmitter for the 3.5MHz amateur band
Simple novice transmitter for the 3.5MHz amateur band

AC/Synchro/Resolver/Phase Definitions
AC/Synchro/Resolver/Phase Definitions

... Synchro/resolver devices (Cx/Rx) are designed to transmit their shaft angular position information (primary rotor windings) to the associated system by causing the amplitude of the signal on the secondary windings (stators) to be changed (Reference Figure 1 and Figure 2). The devices are limited to ...
2SB1197K
2SB1197K

Picture This! - Mecca Hosting Client Sites on ganymede
Picture This! - Mecca Hosting Client Sites on ganymede

... Picture This! • T7D010 If you have a big old capacitor hanging around the shack, keep it handy! That big old capacitor has a telltale signature when you check it with an ohmmeter. On a high ohms reading scale, the discharged capacitor will first look like an almost short circuit, and then show incr ...
ECE 371 SUSTAINABLE ENERGY SYSTEMS EXPERIMENT 3 INTRODUCTION TO SYNCHRONOUS GENERATORS
ECE 371 SUSTAINABLE ENERGY SYSTEMS EXPERIMENT 3 INTRODUCTION TO SYNCHRONOUS GENERATORS

... 1. Learn to connect the dc machine (dynamometer) as a motor and the synchronous machine as a generator. 2. Gain an understanding of the relationship between the speed of prime-mover and the frequency of generated ac voltage. 3. Gain an understanding of the phase angle relationship between the phase ...
Experiment 2 - Single Phase Transformer
Experiment 2 - Single Phase Transformer

... Figure 2-2: Determining the ratio of Primary Current to Secondary Current ...
RC RL RLC 1.0
RC RL RLC 1.0

... • Assemble the circuit of Figure 2. Use a small value of R, say, 47. Be sure to reduce the signal generator frequency to 100 Hz or below so you can see the entire damped oscillation. • Measure the period and calculate the frequency of the oscillations. The period is NOT 0.01 s = 1/100 Hz, the repet ...
Voltage Line Conditioner
Voltage Line Conditioner

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Basic Electronics

... AC is short for alternating current, which is any signal that’s not DC. AC signals vary with time. The mains in your house supply AC electricity in the shape of a sine wave: the voltage varies from a large negative to a large positive voltage 60 times per second (in the USA and Japan) or 50 times (i ...
EE2003 Circuit Theory
EE2003 Circuit Theory

... Circuit Theory Chapter 6 Capacitors and Inductors Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. ...
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Spark-gap transmitter



A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""
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