A3918 - Allegro MicroSystems
... A3918 must be soldered directly onto the board. On the underside of the A3918 package is an exposed pad, which provides a path for enhanced thermal dissipation. The thermal pad should be soldered directly to an exposed surface on the PCB. Thermal vias are used to transfer heat to other layers of the ...
... A3918 must be soldered directly onto the board. On the underside of the A3918 package is an exposed pad, which provides a path for enhanced thermal dissipation. The thermal pad should be soldered directly to an exposed surface on the PCB. Thermal vias are used to transfer heat to other layers of the ...
voltage_regulator2
... Overload protection for a series regulator protects the control element in the case of a short. Also known as constant-current limiting. The load current through R4 produces a voltage from base to emitter of Q2 When IL reaches a predetermined maximum value, the voltage drop across R4 is suff ...
... Overload protection for a series regulator protects the control element in the case of a short. Also known as constant-current limiting. The load current through R4 produces a voltage from base to emitter of Q2 When IL reaches a predetermined maximum value, the voltage drop across R4 is suff ...
OP193 数据手册DataSheet 下载
... The OP193 family of single-supply operational amplifiers features a combination of high precision, low supply current and the ability to operate at low voltages. For high performance in single-supply systems the input and output ranges include ground, and the outputs swing from the negative rail to ...
... The OP193 family of single-supply operational amplifiers features a combination of high precision, low supply current and the ability to operate at low voltages. For high performance in single-supply systems the input and output ranges include ground, and the outputs swing from the negative rail to ...
Voltage
... Overload protection for a series regulator protects the control element in the case of a short. Also known as constant-current limiting. The load current through R4 produces a voltage from base to emitter of Q2 When IL reaches a predetermined maximum value, the voltage drop across R4 is suff ...
... Overload protection for a series regulator protects the control element in the case of a short. Also known as constant-current limiting. The load current through R4 produces a voltage from base to emitter of Q2 When IL reaches a predetermined maximum value, the voltage drop across R4 is suff ...
CAT661 - High Frequency 100 mA CMOS Charge Pump, Inverter
... positive input voltage to a negative output. Only two external capacitors are needed. With a guaranteed 100 mA output current capability, the CAT661 can replace a switching regulator and its inductor. Lower EMI is achieved due to the absence of an inductor. In addition, the CAT661 can double a volta ...
... positive input voltage to a negative output. Only two external capacitors are needed. With a guaranteed 100 mA output current capability, the CAT661 can replace a switching regulator and its inductor. Lower EMI is achieved due to the absence of an inductor. In addition, the CAT661 can double a volta ...
instrumental-analysis-2
... Basically, a pH meter measures the potential between pH electrode (which is sensitive to the hydronium ions) and the reference electrode (which doesn't care what's in the ...
... Basically, a pH meter measures the potential between pH electrode (which is sensitive to the hydronium ions) and the reference electrode (which doesn't care what's in the ...
single phase to three phase power conversion using pwm technique
... The MOSFET driver operates from a signal input given from the microcontroller and takes its power from the battery voltage supply that the system uses. The driver is capable of operating both the high side and low side devices, but in order to get the extra 10V for the high side device, an external ...
... The MOSFET driver operates from a signal input given from the microcontroller and takes its power from the battery voltage supply that the system uses. The driver is capable of operating both the high side and low side devices, but in order to get the extra 10V for the high side device, an external ...
EUP3510 Preliminary Current Limited Load Switch
... The EUP3510 is a Current Limited P-channel MOSFET power switch designed for high-side load-switching applications. An integrated current-limiting circuit protects the input supply against large currents which may cause the supply to fall out of regulation. It can be used to control loads that requir ...
... The EUP3510 is a Current Limited P-channel MOSFET power switch designed for high-side load-switching applications. An integrated current-limiting circuit protects the input supply against large currents which may cause the supply to fall out of regulation. It can be used to control loads that requir ...
Installation Instructions SET-SCM20-SMBW
... The SET-SCM20 sensor is designed to be mounted in a corner 2.2m high, positioned so that traffic moves towards, rather than across, the detector. Position the sensor where it does not look out of doors or windows. The mounting bracket allows the sensor to have its angle of viewing adjusted. ...
... The SET-SCM20 sensor is designed to be mounted in a corner 2.2m high, positioned so that traffic moves towards, rather than across, the detector. Position the sensor where it does not look out of doors or windows. The mounting bracket allows the sensor to have its angle of viewing adjusted. ...
Capacitor Leakage Measurements Using a Model 6517A Electrometer
... Johnson noise is thermal noise created by any resistor. At room temperature this is roughly 6.5 × 10–10 ∆f/R amps, p-p. The current noise in a 1TΩ feedback resistor at a typical 3Hz bandwidth would be ~8×10-16A. When measuring an insulation resistance of 1016Ω at 10V, the noise current will be 80% o ...
... Johnson noise is thermal noise created by any resistor. At room temperature this is roughly 6.5 × 10–10 ∆f/R amps, p-p. The current noise in a 1TΩ feedback resistor at a typical 3Hz bandwidth would be ~8×10-16A. When measuring an insulation resistance of 1016Ω at 10V, the noise current will be 80% o ...
Troubleshooting Techniques
... input voltage will never exceed the output, the device will remain in one of its saturated states. ...
... input voltage will never exceed the output, the device will remain in one of its saturated states. ...
Document
... When a current flows through a loop, the magnetic field created by that current has a magnetic flux through the area of the loop. If the current changes, the magnetic field changes, and so the flux changes giving rise to an induced emf. This phenomenon is called self-induction because it is the loop ...
... When a current flows through a loop, the magnetic field created by that current has a magnetic flux through the area of the loop. If the current changes, the magnetic field changes, and so the flux changes giving rise to an induced emf. This phenomenon is called self-induction because it is the loop ...
novel voltage stability analysis of a grid connected – photovoltic
... alternatives to the conventional energy sources are environment friendly and pollution free renewable energy sources. A conventional grid connected photo voltaic system with a battery energy storage system uses a maximum power point tracker for extracting maximum solar power. The dc/ac inverter tran ...
... alternatives to the conventional energy sources are environment friendly and pollution free renewable energy sources. A conventional grid connected photo voltaic system with a battery energy storage system uses a maximum power point tracker for extracting maximum solar power. The dc/ac inverter tran ...
R09 SET-1 Code No: R09221902
... B.Tech II Year - II Semester Examinations, December-2011 / January-2012 ANALOG AND DIGITAL IC APPLICATIONS (ELECTRONICS & COMPUTER ENGINEERING) Time: 3 hours Max. Marks: 75 Answer any five questions All questions carry equal marks --1.a) What are the Four Differential Amplifier Configurations? Compa ...
... B.Tech II Year - II Semester Examinations, December-2011 / January-2012 ANALOG AND DIGITAL IC APPLICATIONS (ELECTRONICS & COMPUTER ENGINEERING) Time: 3 hours Max. Marks: 75 Answer any five questions All questions carry equal marks --1.a) What are the Four Differential Amplifier Configurations? Compa ...
Introduction - facstaff.bucknell.edu
... voltages rises and falls. The major disadvantage of the circuit shown in Figure 1 is that the diode conducts during only one of the input AC voltage’s half-cycles, and for this reason the circuit is more specifically called a half-wave rectifier. During the half-cycle when the diode does not conduct ...
... voltages rises and falls. The major disadvantage of the circuit shown in Figure 1 is that the diode conducts during only one of the input AC voltage’s half-cycles, and for this reason the circuit is more specifically called a half-wave rectifier. During the half-cycle when the diode does not conduct ...
Chapter 8 Notes - Valdosta State University
... A fuse can be used to protect a circuit from overload. A fuse is a device which is wired in series with the circuit it is protecting and consists of a conductor which will melt when its maximum current rating is reached. This acts like a switch that opens the circuit and the current cannot become l ...
... A fuse can be used to protect a circuit from overload. A fuse is a device which is wired in series with the circuit it is protecting and consists of a conductor which will melt when its maximum current rating is reached. This acts like a switch that opens the circuit and the current cannot become l ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.