High-voltage power supply

EIOs), backward wave oscillators (BWOs) or magnetrons are available. Their spectral characteristics may be favourable however, they typically require highly stabilized high-voltage power supplies. Still higher frequencies may be obtained using far-infrared gas lasers pumped for example by a CO- laser [49]. 

Electrostatic spray Charged particles are sprayed on electronically conductive parts process gives high paint utilization more expensive than conventional spray. Spray gun, high-voltage power supply pumps dryers Pretreating station for parts (coated or preheated to make conductive). 

The excitation of the analytical lines depends approximately on the square of the x-ray tube voltage (1.5) and is therefore very sensitive to the regulation of the high-voltage power supply. The performance of the other components of the x-ray spectrograph is not so sensitive to power supply regulation. It is usually convenient to regulate the entire power supply to the instrument because the x-ray tube is the major part of the load. 

Input power is not the energy consumption at the discharge-gap, but the presented value on the high-voltage power supply. Results show that type A electrodes offer the highest ener efficiency (LHV, 30.2% HHV, 30.8%). For that reason, the pair of coaxial needle type of electrodes was selected for subsequent experiments. 

Two high-voltage power supplies are used to drive the separation. The first power supply applies high voltage through a platinum electrode to the injection buffer reservoir for the first dimension separation. The second power supply applies potential to the interface through its buffer reservoir. The sheath flow cuvette is held at ground potential. 

One quick test of whether the current passing through an electrolytic capacitor is within bounds is to touch it after it has been running for some time (high-voltage power supplies must be turned OFF just prior to this ). If an electrolytic capacitor has been designed with the normal recommended procedures for ensuring its life, the delta between its case temperature and the ambient temperature should be almost equal to the delta between its... 

High Voltage Power Supply Separation Capillary Detection Capillary ... 

Figure 11 Schematic diagram of a batch chemiluminometer. H.V., high-voltage power supply I/V, current-to-voltage converter.

The concentration of 222Rn in air was determined with a radon measurement detector. The detector allows realizing continuous radon monitoring. It consists of an electronic unit and a scintillation cell. The electronic unit contains power supply, amplifier, discriminator, timer, counter, and indicator. The scintillation cell contains the zinc sulfide scintillator, photomultiplier, preamplifier, high voltage power supply and chamber with a volume of 200 mL over the scintillator. This chamber is filled with the gas to be analyzed. The air is either pumped or diffuses into the scintillation cell. The scintillation count is processed by electronics, and radon concentrations for predetermined intervals are stored in the memory of the device. 

The simplest CEC equipment must include the following components a high-voltage power supply, solvent and sample vials at the inlet and a vial to collect waste at the outlet of the capillary column, a column that simultaneously generates EOF and separates the analytes, and a detector that monitors the component peaks as they leave the column. Figure 4 shows a scheme of an instrument that... 

A schematic representation of a CE system is presented in Figure 9.1. In this diagram, the CE components have obvious counterparts to those found in slab gel electrophoresis. Instead of buffer tanks there are two small buffer reservoirs, and the capillary takes the place of the gel (or more accurately, a gel lane). The capillary is immersed in the electrolyte-filled reservoirs, which also make contact with the electrodes connected to a high-voltage power supply. A new feature to the conventional gel electrophoresis format is the presence of an online detection system. 

Fig. 12. A flash photolysis apparatus. 1, high-voltage power supply 2, 10 M12 resistor 3. high-voltage capacitor 4, coaxial cable 5, flash tube 6, vacuum system 7, reflector 8, pulsed spectroscopic light source 9, measuring cell 10, Hilger medium quartz spectrograph. (From Vallotton and Wild, Ref. ))...

CE instrumentation is quite simple (see Chapter 3). A core instrument utilizes a high-voltage power supply (capable of voltages in excess of 30,000 V), capillaries (approximately 25—lOOpm I.D.), buffers to complete the circuit (e.g., citrate, phosphate, or acetate), and a detector (e.g., UV-visible). CE provides simplicity of method development, reliability, speed, and versatility. It is a valuable technique because it can separate compounds that have traditionally been difficult to handle by HPLC. Furthermore, it can be automated for quantitative analysis. CE can play an important role in process analytical technology (PAT). For example, an on-line CE system can completely automate the sampling, sample preparation, and analysis of proteins or other species that can be separated by CE. 

Electronbeam processor for film conversion. HVPS, high-voltage power supply. The arrow in the EB curing unit indicates the direction of the electron beam. (Courtesy Energy Sciences, Inc.)... 

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