Testing Electrical Systems with a Digital Multimeter
... ith the new computer systems, high resistance in ground wires and sensor leads can produce all sorts of unpredictable symptoms. Apply silicone dielectric lubricant, available at radio supply stores, to connections before you assemble them. This will reduce corrosion. Pay particular attention to grou ...
... ith the new computer systems, high resistance in ground wires and sensor leads can produce all sorts of unpredictable symptoms. Apply silicone dielectric lubricant, available at radio supply stores, to connections before you assemble them. This will reduce corrosion. Pay particular attention to grou ...
Experiment 1: Index of refraction
... Last Update by Mike Hosek, Sunny Nigam and James Glazier 9/10/15 ...
... Last Update by Mike Hosek, Sunny Nigam and James Glazier 9/10/15 ...
Arc structures in twin-cathode DC electric arc furnace
... arcs detected; two separate arcs or a single merged arc. The bright spots on the anode were also counted (lower green spots in Fig. 3.); this is an indicator of the number of arc attachments. Arc length was determined using the skeleton morphological technique to estimate the distance between the br ...
... arcs detected; two separate arcs or a single merged arc. The bright spots on the anode were also counted (lower green spots in Fig. 3.); this is an indicator of the number of arc attachments. Arc length was determined using the skeleton morphological technique to estimate the distance between the br ...
Shure Performance Gear Wireless User Guide (English)
... generates, uses and can radiate radio channel energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause ...
... generates, uses and can radiate radio channel energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause ...
electrical systems on meriden triumphs
... frame/engine of the bike to provide the return path for the electrical current. The other terminal of the battery is wired to the fuse, then from the other side of the fuse to the ignition switch, and from there to the kill switch, and from the kill switch to one side of the coil (in the Meriden cas ...
... frame/engine of the bike to provide the return path for the electrical current. The other terminal of the battery is wired to the fuse, then from the other side of the fuse to the ignition switch, and from there to the kill switch, and from the kill switch to one side of the coil (in the Meriden cas ...
Questions from Past Papers
... (c) A conductor of length l is moved at a constant speed v so that it passes perpendicularly through a uniform magnetic field of flux density B, as shown in Figure 4. ...
... (c) A conductor of length l is moved at a constant speed v so that it passes perpendicularly through a uniform magnetic field of flux density B, as shown in Figure 4. ...
Smoothing and Filtering the Power Supply
... certainly be destroyed. For the GZ34 the limit is 60uF, and it would be a good idea to always use a value smaller than this, rather than push the valve to its maximum limits, especially since there is rarely any need for a capacitor larger than 60uF. In a low power or singleended amp we might add a ...
... certainly be destroyed. For the GZ34 the limit is 60uF, and it would be a good idea to always use a value smaller than this, rather than push the valve to its maximum limits, especially since there is rarely any need for a capacitor larger than 60uF. In a low power or singleended amp we might add a ...
1951 , Volume v.2 n.10 , Issue June-1951
... and by relating the reference volt ages for the amplitude comparators to the same voltages used in the clamping. Thus, a change in clamp ing voltage will modify the ampli tude of the square wave, but the ref erence voltages for the amplitudecomparators will also be modified by the same percentage. T ...
... and by relating the reference volt ages for the amplitude comparators to the same voltages used in the clamping. Thus, a change in clamp ing voltage will modify the ampli tude of the square wave, but the ref erence voltages for the amplitudecomparators will also be modified by the same percentage. T ...
Type VMN Voltage Monitoring Resistor Networks
... peak, followed by a fall time of 50 microseconds to 50% of the impulse voltage peak. Impulse applied to Pin 1 (with R1 and R2 connected in series), with Pin 5 held near ground. After 20 pulses applied, the Change in Ratio is 0.01% maximum. ...
... peak, followed by a fall time of 50 microseconds to 50% of the impulse voltage peak. Impulse applied to Pin 1 (with R1 and R2 connected in series), with Pin 5 held near ground. After 20 pulses applied, the Change in Ratio is 0.01% maximum. ...
Lect_16
... • Resonance occurs in any system that has a complex conjugate pair of poles; it is the cause of oscillations of stored energy from one form to another. • It allows frequency discrimination in communications networks. Resonance is a condition in an RLC circuit in which the capacitive and inductive re ...
... • Resonance occurs in any system that has a complex conjugate pair of poles; it is the cause of oscillations of stored energy from one form to another. • It allows frequency discrimination in communications networks. Resonance is a condition in an RLC circuit in which the capacitive and inductive re ...
G4-Amateur-Radio-Practices
... G4A02 What is one advantage of selecting the opposite or "reverse" sideband when receiving CW signals on a typical HF transceiver? A. Interference from impulse noise will be eliminated B. More stations can be accommodated within a given signal passband C. It may be possible to reduce or eliminate i ...
... G4A02 What is one advantage of selecting the opposite or "reverse" sideband when receiving CW signals on a typical HF transceiver? A. Interference from impulse noise will be eliminated B. More stations can be accommodated within a given signal passband C. It may be possible to reduce or eliminate i ...
DESIGN OF DC MACHINE
... Flux density in teeth: if a high value of flux density is assumed for air gap, the flux density in armature teeth also becomes high. The maximum value of flux density in the teeth at minimum section should not exceed a value of 2.2 wb/m2 because at higher flux density i) increased iron losses and ii ...
... Flux density in teeth: if a high value of flux density is assumed for air gap, the flux density in armature teeth also becomes high. The maximum value of flux density in the teeth at minimum section should not exceed a value of 2.2 wb/m2 because at higher flux density i) increased iron losses and ii ...
14PE7 Control of Reduced-Rating Dynamic Voltage Restorer With a
... Power quality problems such as transients, sags, swells, and other distortions to the sinusoidal waveform of the supply voltage affect the performance of these equipment pieces. Technologies such as custom power devices are emerged to provide protection against power quality problems. Custom power d ...
... Power quality problems such as transients, sags, swells, and other distortions to the sinusoidal waveform of the supply voltage affect the performance of these equipment pieces. Technologies such as custom power devices are emerged to provide protection against power quality problems. Custom power d ...
Datasheet - Littelfuse
... condition associated with the inductance of the device and the inductance of the connection method. The capacitive effect is of minor importance in the parallel protection scheme because it only produces a time delay in the transition from the operating voltage to the clamp voltage as shown in Figur ...
... condition associated with the inductance of the device and the inductance of the connection method. The capacitive effect is of minor importance in the parallel protection scheme because it only produces a time delay in the transition from the operating voltage to the clamp voltage as shown in Figur ...
SLC-600-1200-1800 230V, 60Hz
... auto-transformer, which provides four levels of line regulation: two boost-stage and one buck-stage. Even when the input voltage varies between 150 – 280V, the output is regulated to within 200 and 250V, well within the range of most equipment. SLc operation is monitored by four status LEDs, indicat ...
... auto-transformer, which provides four levels of line regulation: two boost-stage and one buck-stage. Even when the input voltage varies between 150 – 280V, the output is regulated to within 200 and 250V, well within the range of most equipment. SLc operation is monitored by four status LEDs, indicat ...
Functions Generator
... To modify the amplitude of the sinusoidal signal, disconnect J5 from J6 and connect J7 with J8. Visualize the signal from the Sinus and Out points. Modify Pot3 (from minimum to maximum) the minimum and maximum values of the amplitude of the output voltage (Out). Check if for Pot3 set at half, ...
... To modify the amplitude of the sinusoidal signal, disconnect J5 from J6 and connect J7 with J8. Visualize the signal from the Sinus and Out points. Modify Pot3 (from minimum to maximum) the minimum and maximum values of the amplitude of the output voltage (Out). Check if for Pot3 set at half, ...
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.""