The Franck-Hertz Experiment
... ramping of the voltage of the power supply and the taking of the data by the computer. (It is a good idea to put the reset/ramp switch to the reset position as soon as the data sampling is completed to insure a proper zero start for the next data sampling.) You cannot collect both the current from t ...
... ramping of the voltage of the power supply and the taking of the data by the computer. (It is a good idea to put the reset/ramp switch to the reset position as soon as the data sampling is completed to insure a proper zero start for the next data sampling.) You cannot collect both the current from t ...
TL494 Pulse-Width-Modulation Control Circuits (Rev. H)
... The design of the TL494 not only incorporates the primary building blocks required to control a switching power supply, but also addresses many basic problems and reduces the amount of additional circuitry required in the total design. The TL494 is a fixed-frequency pulse-width-modulation (PWM) cont ...
... The design of the TL494 not only incorporates the primary building blocks required to control a switching power supply, but also addresses many basic problems and reduces the amount of additional circuitry required in the total design. The TL494 is a fixed-frequency pulse-width-modulation (PWM) cont ...
MAX1801 Digital Camera Step-Up Slave DC-DC Controller General Description
... The MAX1801 controller operates in a low-noise fixedfrequency PWM mode, with output power limited by the external components. The controller regulates the output voltage by modulating the pulse width of the drive signal for an external N-channel MOSFET switch. The user-adjusted switching frequency i ...
... The MAX1801 controller operates in a low-noise fixedfrequency PWM mode, with output power limited by the external components. The controller regulates the output voltage by modulating the pulse width of the drive signal for an external N-channel MOSFET switch. The user-adjusted switching frequency i ...
UcD32MP UcD34MP UcD36MP
... the fault has disappeared. Long term over current will be the responsibility of the external control logic. When an over temperature condition is detected, the main SMPS should be put in standby mode. Once the temperature drops below a safe level it may continue normal operation. The main SMPS will ...
... the fault has disappeared. Long term over current will be the responsibility of the external control logic. When an over temperature condition is detected, the main SMPS should be put in standby mode. Once the temperature drops below a safe level it may continue normal operation. The main SMPS will ...
EL5128 - Intersil
... when sinking. JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD ...
... when sinking. JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD ...
awa_14-7490
... calibration in decibels, An 80 Ω concentric output cable is provided, The whole of the r-f section is enclosed in a brass box, heavily tin-plated, and all leads entering the box are well filtered, variable condenser rotor and stator are milled from solid brass, and are insulated by polystyrene and m ...
... calibration in decibels, An 80 Ω concentric output cable is provided, The whole of the r-f section is enclosed in a brass box, heavily tin-plated, and all leads entering the box are well filtered, variable condenser rotor and stator are milled from solid brass, and are insulated by polystyrene and m ...
W211 (25-40-75-100-150-250-400-600A)
... 660Vac nominal voltages. The models of the W211 series accept Vdc and Vac logic controls. The conduction is activated by the control signal at the first zero crossing of the load power voltage. Switching off occurs by the first zero crossing of the load current after disabling the control signal. Th ...
... 660Vac nominal voltages. The models of the W211 series accept Vdc and Vac logic controls. The conduction is activated by the control signal at the first zero crossing of the load power voltage. Switching off occurs by the first zero crossing of the load current after disabling the control signal. Th ...
Final Presentation
... •Wires must not be obstructed so communication with projector box can happen •Solution: use a PVC pipe structures as array to house light sensors ...
... •Wires must not be obstructed so communication with projector box can happen •Solution: use a PVC pipe structures as array to house light sensors ...
How To Measure Voltage - MIT Technology Review
... The most robust isolation topology is channel-to-channel isolation. In this topology, each channel is individually isolated from one another and from other non-isolated system components. In addition, each channel has its own isolated power supply. In terms of speed, there are several architectures ...
... The most robust isolation topology is channel-to-channel isolation. In this topology, each channel is individually isolated from one another and from other non-isolated system components. In addition, each channel has its own isolated power supply. In terms of speed, there are several architectures ...
Enhancement of THD in HVDC System using Shunt Active Power
... amount of harmonic current [1], [2]. Voltage distortion or harmonics resulting from current harmonics produced by power electronic equipment has become a serious problem to be solved in many countries. Power system harmonics are not a new problem. Due to the widespread proliferation of nonlinear dis ...
... amount of harmonic current [1], [2]. Voltage distortion or harmonics resulting from current harmonics produced by power electronic equipment has become a serious problem to be solved in many countries. Power system harmonics are not a new problem. Due to the widespread proliferation of nonlinear dis ...
expt8
... forward-biased Si diode. Start by adjusting V0 to get Id = 50 A and then work up to Id = 50 mA, increasing Id by a factor of 2 or 3 at each step. Take a corresponding set of measurements for a Ge diode, and then make a graph (on linear paper) of Vd vs Id for the two cases. (b) For the Zener, measur ...
... forward-biased Si diode. Start by adjusting V0 to get Id = 50 A and then work up to Id = 50 mA, increasing Id by a factor of 2 or 3 at each step. Take a corresponding set of measurements for a Ge diode, and then make a graph (on linear paper) of Vd vs Id for the two cases. (b) For the Zener, measur ...
48-V/+48-V hot-swap applications
... the system is designed to handle such faults. In the end, we have to find a way to update the system regularly by removing redundant parts and/or inserting new modules while the system is still running. That is why hot-plug or hot-swap capability is required in today’s high-availability electronic s ...
... the system is designed to handle such faults. In the end, we have to find a way to update the system regularly by removing redundant parts and/or inserting new modules while the system is still running. That is why hot-plug or hot-swap capability is required in today’s high-availability electronic s ...
Evaluates: MAX5854/MAX5853 MAX5854 Evaluation Kit General Description Features
... easily interface with a pattern generator, circuitry that converts the differential current outputs to single-ended voltage signals, and circuitry to convert a user-supplied single-ended clock signal to a differential clock signal. The EV kit can operate from a single 3V power supply but also suppor ...
... easily interface with a pattern generator, circuitry that converts the differential current outputs to single-ended voltage signals, and circuitry to convert a user-supplied single-ended clock signal to a differential clock signal. The EV kit can operate from a single 3V power supply but also suppor ...
MPA-201 - Soundpure.com
... signal processors and fit them into smaller cases or standard 19inch equipment racks. Many mic pre modules were stripped from their frame, however their outputs had a terminating resistor at the patchbay, which was left behind. Without the terminating resistor, the transformers start to saturate or ...
... signal processors and fit them into smaller cases or standard 19inch equipment racks. Many mic pre modules were stripped from their frame, however their outputs had a terminating resistor at the patchbay, which was left behind. Without the terminating resistor, the transformers start to saturate or ...
FM radio circuit
... on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used. ...
... on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used. ...
AT-B420L
... The user shall ensure to take all measures necessary to protect against electrical shock. The transducer is a built-in device containing conducting parts that shall not be accessible after installation. A protective enclosure or additional insulation barrier may be necessary. The transducer shall no ...
... The user shall ensure to take all measures necessary to protect against electrical shock. The transducer is a built-in device containing conducting parts that shall not be accessible after installation. A protective enclosure or additional insulation barrier may be necessary. The transducer shall no ...
AC to DC Converter (Rectifier)
... Single-Phase Controlled Rectifier The load is fed via a thyristor in each positive cycle of voltages v1 and v2 and the load current returns via the neutral N. With reference in picture bisaides, thyristor T1 can be fired into the ON state at any time provided that voltage vT1 > 0. The firing pulses ...
... Single-Phase Controlled Rectifier The load is fed via a thyristor in each positive cycle of voltages v1 and v2 and the load current returns via the neutral N. With reference in picture bisaides, thyristor T1 can be fired into the ON state at any time provided that voltage vT1 > 0. The firing pulses ...
CIRCUIT FUNCTION AND BENEFITS
... output –1.25 V, so a V SS of at least –1.5 V should be used, providing an output headroom of 250 mV. As long as the headroom requirements are met, any supply voltage between ±1.5 V and ±2.5 V can be used. The AD8603 is specified for a 5 V supply and has an absolute maximum supply voltage of 6 V, or ...
... output –1.25 V, so a V SS of at least –1.5 V should be used, providing an output headroom of 250 mV. As long as the headroom requirements are met, any supply voltage between ±1.5 V and ±2.5 V can be used. The AD8603 is specified for a 5 V supply and has an absolute maximum supply voltage of 6 V, or ...
A DSP based reliable fuel cell power system with input
... link necessities the use of a high frequency transformer and other switching devices. Method using an active filter for current ripple reduction was proposed in [6, 7]. However these methods are based on using a separate energy storing device like battery or ultra capacitor. ...
... link necessities the use of a high frequency transformer and other switching devices. Method using an active filter for current ripple reduction was proposed in [6, 7]. However these methods are based on using a separate energy storing device like battery or ultra capacitor. ...
B++--The Design of A Low-Power Low-Noise Phase Lock
... reference signal remains constant or is zero However, if in the process due to some discrepancy a phase error builds up, a control mechanism gets triggered, which acts on the oscillator to counter-balance the so resulted phase error in such a manner that it is reduced to minimum until it is matched. ...
... reference signal remains constant or is zero However, if in the process due to some discrepancy a phase error builds up, a control mechanism gets triggered, which acts on the oscillator to counter-balance the so resulted phase error in such a manner that it is reduced to minimum until it is matched. ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.