active antenna - Talking Electronics
... pin3 is tied to the gate of SCR1. As long as S1 - S5, which are connected to the trigger input of U1, are open, the circuit remains in the ready state, and does not trigger SCR1 into conduction. Because the relay is not energized, battery current is routed through the relay's normally-closed termina ...
... pin3 is tied to the gate of SCR1. As long as S1 - S5, which are connected to the trigger input of U1, are open, the circuit remains in the ready state, and does not trigger SCR1 into conduction. Because the relay is not energized, battery current is routed through the relay's normally-closed termina ...
Product Group: Vishay Foil Resistors
... Of the four parameters listed above, in-situ accurate measurement of current output was found to be the most important parameter by far in reducing noise. All 60 channels of the existing HPC equipment were upgraded to allow for more reliable measurement of current through the use of Bulk Metal Z-Foi ...
... Of the four parameters listed above, in-situ accurate measurement of current output was found to be the most important parameter by far in reducing noise. All 60 channels of the existing HPC equipment were upgraded to allow for more reliable measurement of current through the use of Bulk Metal Z-Foi ...
MAX1623 3A, Low-Voltage, Step-Down Regulator with Synchronous Rectification and Internal Switches General Description
... Whenever the P-channel switch turns on, it stays on until the sensed current reaches the active current limit. The PWM current limit automatically adjusts with the PMOS switch duty cycle required to generate the desired output voltage. When the active current limit is met, the PMOS switch turns off ...
... Whenever the P-channel switch turns on, it stays on until the sensed current reaches the active current limit. The PWM current limit automatically adjusts with the PMOS switch duty cycle required to generate the desired output voltage. When the active current limit is met, the PMOS switch turns off ...
LA-601AB
... The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants cont ...
... The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants cont ...
Compressor starting current too high?
... Compressor starting current too high? - Reduce compressor starting current by up to 40% - Eliminate the damaging effects of high starting torque surges - Fast and reliable start - pressure equalization not necessary ... and the MCI is as easy to specify and install as an ordinary contactor ...
... Compressor starting current too high? - Reduce compressor starting current by up to 40% - Eliminate the damaging effects of high starting torque surges - Fast and reliable start - pressure equalization not necessary ... and the MCI is as easy to specify and install as an ordinary contactor ...
SSM2143 数据手册DataSheet 下载
... Input Offset Voltage. The Input Bias Current and Input Offset Current are not specified as for a normal operational amplifier. Because the SSM2143 has built-in resistors, any bias current related errors are converted into offset voltage errors. Thus, the offset voltage specification is a combination ...
... Input Offset Voltage. The Input Bias Current and Input Offset Current are not specified as for a normal operational amplifier. Because the SSM2143 has built-in resistors, any bias current related errors are converted into offset voltage errors. Thus, the offset voltage specification is a combination ...
permanent-magnet moving-coil movement
... The coil of wire is wound on an aluminum frame, or bobbin, and the bobbin is supported by jeweled bearings which allow it to move freely. This is shown in figure 3. To use this permanent-magnet moving-coil device as a meter, two problems must be solved. First, a way must be found to return the coil ...
... The coil of wire is wound on an aluminum frame, or bobbin, and the bobbin is supported by jeweled bearings which allow it to move freely. This is shown in figure 3. To use this permanent-magnet moving-coil device as a meter, two problems must be solved. First, a way must be found to return the coil ...
Application Note AN-940
... This is equivalent to a “make before break” set of contacts and there is a finite amount of charge that is lost at each switching operation. The inverter building block of the C-MOS logic family is easily recognizable in this circuit configuration. A source follower totem pole is shown in Figure 6. ...
... This is equivalent to a “make before break” set of contacts and there is a finite amount of charge that is lost at each switching operation. The inverter building block of the C-MOS logic family is easily recognizable in this circuit configuration. A source follower totem pole is shown in Figure 6. ...
Finding the root cause of ESD problems
... Critical is the error feedback: A test code needs to be operating on the EUT. The test code signals to the control PC if a malfunction has occurred. If so, the level of injected noise (by source setting, not by induced voltage) is recorded and the EUT is reset. ...
... Critical is the error feedback: A test code needs to be operating on the EUT. The test code signals to the control PC if a malfunction has occurred. If so, the level of injected noise (by source setting, not by induced voltage) is recorded and the EUT is reset. ...
Transistors
... Diodes that are joined back-to-back. This forms a sort of a sandwich where one kind of semiconductor is placed in between two others. There are therefore two kinds of sandwich, the NPN and PNP varieties. ...
... Diodes that are joined back-to-back. This forms a sort of a sandwich where one kind of semiconductor is placed in between two others. There are therefore two kinds of sandwich, the NPN and PNP varieties. ...
BD239/ A/B/ C NPN Epitaxial Silicon Transistor
... NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...
... NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...
File
... generation and transmission, the electric power available is usually an a.c. supply. The supply voltage varies sinusoidally and has a frequency of 50 Hz. It is used for lighting, heating and electric motors. But there are many applications where d.c. supply is needed. When such a d.c. supply is requ ...
... generation and transmission, the electric power available is usually an a.c. supply. The supply voltage varies sinusoidally and has a frequency of 50 Hz. It is used for lighting, heating and electric motors. But there are many applications where d.c. supply is needed. When such a d.c. supply is requ ...
New Concept for Class D Audio Amplifiers for
... between drive signals PWM1 and PWM2. We take the two output filter inductors found in a typical Class D amplifier configuration and combine them into a single component where the two windings are magnetically coupled, referred to as a D-inductor. In this configuration, the magnetizing inductances ar ...
... between drive signals PWM1 and PWM2. We take the two output filter inductors found in a typical Class D amplifier configuration and combine them into a single component where the two windings are magnetically coupled, referred to as a D-inductor. In this configuration, the magnetizing inductances ar ...
... This is why parts like the ADA4817-1, with 20pA of maximum input bias current and a unity gain frequency of around 400MHz are a good fit for high gain photodiode applications, even for moderate bandwidths. The photodiode capacitance will dominate the total input capacitance in most systems, but some ...
350 kVA - 505 Amps per phase
... caused, for example, by short circuit or out-of-phase paralleling. The SX440 will support a range of electronic accessories, including a 'droop' Current Transformer (CT) to permit parallel operation with other ac generators. If 3-phase sensing is required with the self-excited system, the SX421 AVR ...
... caused, for example, by short circuit or out-of-phase paralleling. The SX440 will support a range of electronic accessories, including a 'droop' Current Transformer (CT) to permit parallel operation with other ac generators. If 3-phase sensing is required with the self-excited system, the SX421 AVR ...
Chapter 28
... of the emf (from – to +), the potential difference V is + (Fig. c). If a source of emf is traversed in the direction opposite the emf (from + to -), the potential difference V is - (Fig. d). Note: We have assumed that battery has no internal resistance. PHY 1361 ...
... of the emf (from – to +), the potential difference V is + (Fig. c). If a source of emf is traversed in the direction opposite the emf (from + to -), the potential difference V is - (Fig. d). Note: We have assumed that battery has no internal resistance. PHY 1361 ...
The basic function of switchgear is to control supply of electric power
... having different numbers and some of the terms were not clearly defined or quantified. Now, standards for all low voltage switchgear and controlgear are grouped together under a new specification - IEC-947. Bureau of Indian Standards adopted the new text in 1993 and a new standard - IS 13947 was pub ...
... having different numbers and some of the terms were not clearly defined or quantified. Now, standards for all low voltage switchgear and controlgear are grouped together under a new specification - IEC-947. Bureau of Indian Standards adopted the new text in 1993 and a new standard - IS 13947 was pub ...
EE501:Stochastic Processes
... including single phase and three phase ac-dc rectifiers, ac-ac voltage controllers, dcdc converters, and dc-ac inverters will be covered along with their control techniques. Applications of modern power electronic devices are also included with emphasis on switch mode and linear regulators. These ob ...
... including single phase and three phase ac-dc rectifiers, ac-ac voltage controllers, dcdc converters, and dc-ac inverters will be covered along with their control techniques. Applications of modern power electronic devices are also included with emphasis on switch mode and linear regulators. These ob ...
Current source
A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it.A current source is the dual of a voltage source. The term constant-current 'sink' is sometimes used for sources fed from a negative voltage supply. Figure 1 shows the schematic symbol for an ideal current source, driving a resistor load. There are two types - an independent current source (or sink) delivers a constant current. A dependent current source delivers a current which is proportional to some other voltage or current in the circuit.