Some physical problems: The driven, damped, harmonic oscillator
... source. Vary applied voltage over a reasonable range and measure current through the resistor as a function of the voltage across the resistor. Find resistance by fitting a straight line (Ohm's Law) to the I-V line. Estimate uncertainty using the techniques described in Chapter 9. 2) Set up the resi ...
... source. Vary applied voltage over a reasonable range and measure current through the resistor as a function of the voltage across the resistor. Find resistance by fitting a straight line (Ohm's Law) to the I-V line. Estimate uncertainty using the techniques described in Chapter 9. 2) Set up the resi ...
MEEPP 201 Power Electronic System Control -set1
... output current is 2A and the inductor current variation is ± 15% of IL. The peak to peak output ripple = 50mV. The operating frequency is 20 kHz. Find out the duty ratio, the value of inductance, value of filter capacitance and the diode current. Or ...
... output current is 2A and the inductor current variation is ± 15% of IL. The peak to peak output ripple = 50mV. The operating frequency is 20 kHz. Find out the duty ratio, the value of inductance, value of filter capacitance and the diode current. Or ...
DN41 - Switching Regulator Allows Alkalines to Replace NiCads
... life beyond this point. Figure 4 shows efficiency exceeding 85%. The diode and LT1270 switch are the two main loss elements. The Schottky diode introduces a relatively constant 7% loss, while the LT1270 switch loss varies with battery voltage. As battery voltage decreases, switch current and duty cyc ...
... life beyond this point. Figure 4 shows efficiency exceeding 85%. The diode and LT1270 switch are the two main loss elements. The Schottky diode introduces a relatively constant 7% loss, while the LT1270 switch loss varies with battery voltage. As battery voltage decreases, switch current and duty cyc ...
How to Charge Supercapacitor Banks for Energy Storage
... capacitance. A regular SW1 may get stuck in hiccup mode and fail to charge the SC. To protect the SC and SW1, additional current limiting function is necessary at the beginning of the charging stage. A good solution would be for SW1 to provide continuous charging current for an extended amount of ti ...
... capacitance. A regular SW1 may get stuck in hiccup mode and fail to charge the SC. To protect the SC and SW1, additional current limiting function is necessary at the beginning of the charging stage. A good solution would be for SW1 to provide continuous charging current for an extended amount of ti ...
Low Power Dual Operational Amplifier
... The IL2904 contains two independent high gain operational amplifiers with internal frequency compensation. The two op-amps operate over a wide voltage range from a single power supply. Also use a split power supply. The device has low power supply current drain, regardless of the power supply voltag ...
... The IL2904 contains two independent high gain operational amplifiers with internal frequency compensation. The two op-amps operate over a wide voltage range from a single power supply. Also use a split power supply. The device has low power supply current drain, regardless of the power supply voltag ...
Variable Inductance Transducers
... • Since the two secondary windings are connected in series opposition, when the core is at the centre the output is zero (null position) • In the linear operating range o/p voltage is proportional to the core displacement • It provides magnitude as well as the direction. Direction can be obtained by ...
... • Since the two secondary windings are connected in series opposition, when the core is at the centre the output is zero (null position) • In the linear operating range o/p voltage is proportional to the core displacement • It provides magnitude as well as the direction. Direction can be obtained by ...
Operational Amplifiers
... G = Vout/(V+ – V-) The maximum output is the power supply voltage When used in a circuit, the gain of the circuit (as opposed ...
... G = Vout/(V+ – V-) The maximum output is the power supply voltage When used in a circuit, the gain of the circuit (as opposed ...
HERO Jr POWER SUPPLY PROTECTION
... radio control system IC’s appear to have their origin in home automation systems such as the key coded garage door controller. Unfortunately some of these special IC’s have met their demise due to installation of the incorrect batteries, for example two series 12V batteries (yielding 24V) instead of ...
... radio control system IC’s appear to have their origin in home automation systems such as the key coded garage door controller. Unfortunately some of these special IC’s have met their demise due to installation of the incorrect batteries, for example two series 12V batteries (yielding 24V) instead of ...
SG3524 SMPS control circuit
... shutdown terminal: i.e., the output will be off with Pin 4 open and on when it is grounded. Finally, foldback current limiting can be provided with the network of Figure 10. This circuit can reduce the short-circuit current (ISC) to approximately one-third the maximum available output current (IMAX) ...
... shutdown terminal: i.e., the output will be off with Pin 4 open and on when it is grounded. Finally, foldback current limiting can be provided with the network of Figure 10. This circuit can reduce the short-circuit current (ISC) to approximately one-third the maximum available output current (IMAX) ...
Split-phase electric power - University of Utah Physics
... extreme, if the system were designed to provide volt drop in spec when one side was fully loaded and the other completely unloaded the total copper required would be 75% of that required for a single end single phase circuit. In practice a measure between these extremes can be applied (commonly sizi ...
... extreme, if the system were designed to provide volt drop in spec when one side was fully loaded and the other completely unloaded the total copper required would be 75% of that required for a single end single phase circuit. In practice a measure between these extremes can be applied (commonly sizi ...
Product Specification JF5028-00
... SCR/SCRF Series Float Battery Charger (single or three phase input) I. Scope Provide a silicon controlled rectifier battery charger capable of recharging any stationery, secondary battery type. The charger is designed to operate automatically, and shall be a constant voltage device equipped to provi ...
... SCR/SCRF Series Float Battery Charger (single or three phase input) I. Scope Provide a silicon controlled rectifier battery charger capable of recharging any stationery, secondary battery type. The charger is designed to operate automatically, and shall be a constant voltage device equipped to provi ...
Potential Dividers
... You will be familiar with the use of a variable resistor to vary current. ...
... You will be familiar with the use of a variable resistor to vary current. ...
Summary Notes for Further Electronics
... power output is less than the power input. Also the secondary voltage Vs would be less than indicated by equation 2 above. diodes Diodes are semiconductors that have negligible resistance to the flow of current in one direction and very large resistance in the other. In this way they can convert an ...
... power output is less than the power input. Also the secondary voltage Vs would be less than indicated by equation 2 above. diodes Diodes are semiconductors that have negligible resistance to the flow of current in one direction and very large resistance in the other. In this way they can convert an ...
SPD terminology, references SPD terminology
... safe disconnection under fault conditions. Disconnectors may provide isolation by operating as thermal devices, or overcurrent devices. Following current (IF): generally applies to voltage-switching type SPDs. This is the current delivered by the power distribution system which can be safely extingu ...
... safe disconnection under fault conditions. Disconnectors may provide isolation by operating as thermal devices, or overcurrent devices. Following current (IF): generally applies to voltage-switching type SPDs. This is the current delivered by the power distribution system which can be safely extingu ...
Voltage regulator
A voltage regulator is designed to automatically maintain a constant voltage level. A voltage regulator may be a simple ""feed-forward"" design or may include negative feedback control loops. It may use an electromechanical mechanism, or electronic components. Depending on the design, it may be used to regulate one or more AC or DC voltages.Electronic voltage regulators are found in devices such as computer power supplies where they stabilize the DC voltages used by the processor and other elements. In automobile alternators and central power station generator plants, voltage regulators control the output of the plant. In an electric power distribution system, voltage regulators may be installed at a substation or along distribution lines so that all customers receive steady voltage independent of how much power is drawn from the line.