electronic components - Crompton Instruments
... The emitter terminal does not inject current into the base region until its voltage reaches Vp. Once Vp is reached the base circuit conducts and a postive pulse appears at the B1 terminal and a negative pulse at B2. The UJT incorporates a negative resistance region, a low emitter current, and a high ...
... The emitter terminal does not inject current into the base region until its voltage reaches Vp. Once Vp is reached the base circuit conducts and a postive pulse appears at the B1 terminal and a negative pulse at B2. The UJT incorporates a negative resistance region, a low emitter current, and a high ...
Direct ZVS start-up of a current
... zero current switching (ZCS) thus eliminating switching losses. As such both higher power-packing densities and conversion efficiencies can be achieved at high switching frequencies without snubbers. Moreover, with a parallel resonant converter, only real power is supplied through the switching devi ...
... zero current switching (ZCS) thus eliminating switching losses. As such both higher power-packing densities and conversion efficiencies can be achieved at high switching frequencies without snubbers. Moreover, with a parallel resonant converter, only real power is supplied through the switching devi ...
CAT3637 - 6-Channel Programmable High Efficiency LED Driver
... SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any ...
... SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any ...
6501 is a multi-channel DC voltage current source/monitor
... that integrates four source monitors. It is suitable for evaluating semiconductors such as battery controlling ICs and can work as a bias power supply for communication laser diodes or photodetectors that requires high stability. Each unit can be controlled by GPIB, and the structure is expandable b ...
... that integrates four source monitors. It is suitable for evaluating semiconductors such as battery controlling ICs and can work as a bias power supply for communication laser diodes or photodetectors that requires high stability. Each unit can be controlled by GPIB, and the structure is expandable b ...
Speed TEMPFET - Temperature Sense Concept
... At temperatures above 150˚C and 1.5mA forward current, the forward voltage is below 0.9V. At 5mA forward current and over the whole temperature range the forward voltage is below 1.4V. The designer of the system can now decide whether the TEMPFET switches off or goes into a working mode which reduce ...
... At temperatures above 150˚C and 1.5mA forward current, the forward voltage is below 0.9V. At 5mA forward current and over the whole temperature range the forward voltage is below 1.4V. The designer of the system can now decide whether the TEMPFET switches off or goes into a working mode which reduce ...
Eight Darlington arrays
... paralleled for higher current capability. Four versions are available to simplify interfacing to standard logic families: the ULN2801A is designed for general purpose applications with a current limit resistor; the ULN2802A has a 10.5 kΩ input resistor and Zener for 14-25 V PMOS; the ULN2803A has a ...
... paralleled for higher current capability. Four versions are available to simplify interfacing to standard logic families: the ULN2801A is designed for general purpose applications with a current limit resistor; the ULN2802A has a 10.5 kΩ input resistor and Zener for 14-25 V PMOS; the ULN2803A has a ...
PDF
... by the series converter at the fundamental frequency. Figs. 11-15 illustrate the step response of the e xperimental setup. A step change of the fundamental reference voltage of the series converter is made, which consists of both active and reactive variations, as shown in Fig. 11. As shown, the dc ...
... by the series converter at the fundamental frequency. Figs. 11-15 illustrate the step response of the e xperimental setup. A step change of the fundamental reference voltage of the series converter is made, which consists of both active and reactive variations, as shown in Fig. 11. As shown, the dc ...
operational amplifiers
... from a single supply over a wide range of voltages. Operation from split supplies is also possible as long as the difference between the two supplies is 3 V to 30 V and pin 7 is at least 1.5 V more positive than the input common-mode voltage. The low supply current is independent of the magnitude of ...
... from a single supply over a wide range of voltages. Operation from split supplies is also possible as long as the difference between the two supplies is 3 V to 30 V and pin 7 is at least 1.5 V more positive than the input common-mode voltage. The low supply current is independent of the magnitude of ...
LM323 pdf
... The LM323,A are monolithic integrated circuits which supply a fixed positive 5.0 V output with a load driving capability in excess of 3.0 A. These three–terminal regulators employ internal current limiting, thermal shutdown, and safe–area compensation. The A–suffix is an improved device with superio ...
... The LM323,A are monolithic integrated circuits which supply a fixed positive 5.0 V output with a load driving capability in excess of 3.0 A. These three–terminal regulators employ internal current limiting, thermal shutdown, and safe–area compensation. The A–suffix is an improved device with superio ...
Soft-Switching Full-Bridge PWM DC–DC
... The main part of the converter is a high-frequency full-bridge inverter consisting of four fast IGBTs T1 − T4 and freewheeling diodes D1 − D4 . The high-frequency center-tapped step-down power transformer Tr with very low leakage inductance is used to transform high frequency voltage of the inverter ...
... The main part of the converter is a high-frequency full-bridge inverter consisting of four fast IGBTs T1 − T4 and freewheeling diodes D1 − D4 . The high-frequency center-tapped step-down power transformer Tr with very low leakage inductance is used to transform high frequency voltage of the inverter ...
Induced AC creates problems for pipelines in utility corridors
... potentially life-threatening for operations personnel to touch the pipeline or appurtenances. In addition, pipe corrosion also can result from AC discharge. To address this problem, the pipelines must be grounded with a system that passes AC, but blocks DC, to both mitigate the AC and maintain the c ...
... potentially life-threatening for operations personnel to touch the pipeline or appurtenances. In addition, pipe corrosion also can result from AC discharge. To address this problem, the pipelines must be grounded with a system that passes AC, but blocks DC, to both mitigate the AC and maintain the c ...
250mA High Speed Buffer BUF634
... operation. High speed or fast-settling op amps generally require the wide bandwidth mode to remain stable and to assure good dynamic performance. To check for stability with an op amp, look for oscillations or excessive ringing on signal pulses with the intended load and worst case conditions that a ...
... operation. High speed or fast-settling op amps generally require the wide bandwidth mode to remain stable and to assure good dynamic performance. To check for stability with an op amp, look for oscillations or excessive ringing on signal pulses with the intended load and worst case conditions that a ...
Equipment Operation Manual for X
... cleanliness is an overriding concern. Particulates and water vapor from the environment and the air, as well as oils from fingerprints are a major problem for a high vacuum system, and can result in outgassing, as described above. ...
... cleanliness is an overriding concern. Particulates and water vapor from the environment and the air, as well as oils from fingerprints are a major problem for a high vacuum system, and can result in outgassing, as described above. ...
Evaluates: MAX1873 MAX1873 Evaluation Kit General Description Features
... removed from jumper JU1, because it is pulled up to VREF through resistor R8 (10kΩ). Refer to Table 1 for JU1 configurations. To set the charge current at the ICHG/EN pin, replace the voltage-divider resistors R8 and R9 so that the input voltage is set between 700mV and VREF. An external op amp or D ...
... removed from jumper JU1, because it is pulled up to VREF through resistor R8 (10kΩ). Refer to Table 1 for JU1 configurations. To set the charge current at the ICHG/EN pin, replace the voltage-divider resistors R8 and R9 so that the input voltage is set between 700mV and VREF. An external op amp or D ...
Design of a single phase switch mode ac-dc converter
... that we get from power companies is AC. To use those machines AC supply has to be turned into DC supply by the use of a rectifier. A rectifier is an electrical device that converts the incoming AC (alternating current) from a transformer or any other ac power source to pulsating DC (direct current). ...
... that we get from power companies is AC. To use those machines AC supply has to be turned into DC supply by the use of a rectifier. A rectifier is an electrical device that converts the incoming AC (alternating current) from a transformer or any other ac power source to pulsating DC (direct current). ...
Mercury-arc valve
A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool of liquid mercury and is therefore self-restoring. As a result, mercury-arc valves were much more rugged, long-lasting and could carry much higher currents than most other types of gas discharge tube.Invented in 1902 by Peter Cooper Hewitt, mercury-arc rectifiers were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for radio transmitters and for high-voltage direct current (HVDC) power transmission. They were the primary method of high power rectification before the advent of semiconductor rectifiers, such as diodes, thyristors and gate turn-off thyristors (GTOs) in the 1970s.