A Class D AM Transmitter for 75 Meters
... saturate just as I hit 100% modulation because it is trying to drive the intrinsic body diodes in the RF deck FETs into conduction as Vdd tries to go negative. That causes a rapid nose-dive in the load impedance presented to the audio amplifier, and it would regularly trip the protection circuit. Th ...
... saturate just as I hit 100% modulation because it is trying to drive the intrinsic body diodes in the RF deck FETs into conduction as Vdd tries to go negative. That causes a rapid nose-dive in the load impedance presented to the audio amplifier, and it would regularly trip the protection circuit. Th ...
H91-23 Inverter Converter
... signals generated by devices that might have switch bounce so the output will only respond once to each input. The output voltage will remain on for the duration that the corresponding input voltage is present. Before using the H91-23, be sure the power supply is connected to the H91-23 and a main v ...
... signals generated by devices that might have switch bounce so the output will only respond once to each input. The output voltage will remain on for the duration that the corresponding input voltage is present. Before using the H91-23, be sure the power supply is connected to the H91-23 and a main v ...
High Efficiency, Inductorless Step-Down DC/DC Converter
... load current. f is divided from the base clock, half for G=1/2; one-third for G=2/3; and LDO control for G=1. In other control methodology, such as PFM and PWM, d or f varies with both input voltage and load current, it can not achieve small ripple under all conditions. But when the load resistor be ...
... load current. f is divided from the base clock, half for G=1/2; one-third for G=2/3; and LDO control for G=1. In other control methodology, such as PFM and PWM, d or f varies with both input voltage and load current, it can not achieve small ripple under all conditions. But when the load resistor be ...
erii18_servos - Cornerstone Robotics
... position. Typically, a servo is used in hobby applications such as controlling steering for an RC (radio-controlled) car or the rudder for an RC airplane. o Most servos (servo motors) have a position range of 180 degrees (check your servos). If the input position does not match position of the servo ...
... position. Typically, a servo is used in hobby applications such as controlling steering for an RC (radio-controlled) car or the rudder for an RC airplane. o Most servos (servo motors) have a position range of 180 degrees (check your servos). If the input position does not match position of the servo ...
an1088 application note
... A low cost solution to obtain a complete three phase brushless motor control application with speed and torque closed control loop is shown in Fig. 23. This simple low cost solution is useful when high dynamic performances and accuracy of the speed loop are not required. The current regulation limit ...
... A low cost solution to obtain a complete three phase brushless motor control application with speed and torque closed control loop is shown in Fig. 23. This simple low cost solution is useful when high dynamic performances and accuracy of the speed loop are not required. The current regulation limit ...
Active loads and the RIGOL DP800 and DP1000 Series
... The horizontal axis represents voltage, and the vertical axis represents current. The distributions of the four quadrants of the power supply as shown in Figure 2. The first quadrant: the power supply provides a positive voltage and a positive current (the direction of the current flows from the pow ...
... The horizontal axis represents voltage, and the vertical axis represents current. The distributions of the four quadrants of the power supply as shown in Figure 2. The first quadrant: the power supply provides a positive voltage and a positive current (the direction of the current flows from the pow ...
RLC Series Circuits ( )
... RLC Series Circuits Resonance Behavior -- Reference = Serway Chapt. 33 There is a deep analogy between mechanical and electrical oscillators. Figures 1 and 2 demonstrate the situation and give the energy conservation equations for the ideal case with no losses to friction or resistance. This mechani ...
... RLC Series Circuits Resonance Behavior -- Reference = Serway Chapt. 33 There is a deep analogy between mechanical and electrical oscillators. Figures 1 and 2 demonstrate the situation and give the energy conservation equations for the ideal case with no losses to friction or resistance. This mechani ...
NCV885300EVB NCV885300 Evaluation Board User's Manual •
... way to evaluate and integrate a complete high-efficiency non-synchronous buck converter design. No additional components are required, other than dc supplies for the input voltage and enable pin. The board can also be connected to an external clock source to synchronize the switching frequency. The ...
... way to evaluate and integrate a complete high-efficiency non-synchronous buck converter design. No additional components are required, other than dc supplies for the input voltage and enable pin. The board can also be connected to an external clock source to synchronize the switching frequency. The ...
Sink vs Source
... Apparent power (VA): Used to describe the useful or working power in a system. It is measured in VA volt-amperes (not watts). The symbol is S. It is used to describe the resultant power due to the phase separation between the voltage and current. In an alternating current circuit, both the current a ...
... Apparent power (VA): Used to describe the useful or working power in a system. It is measured in VA volt-amperes (not watts). The symbol is S. It is used to describe the resultant power due to the phase separation between the voltage and current. In an alternating current circuit, both the current a ...
Chapter3: Signal conditioning
... Eg. A platinum resistance temperature sensor has a resistance of 100 ohm at 0 0C is placed in one arm of a Wheatstone bridge with each of the other arms also being 100 ohm. If the resistance temperature coefficient of the platinum is 0.0039/K, find the output voltage from the bridge per degree chang ...
... Eg. A platinum resistance temperature sensor has a resistance of 100 ohm at 0 0C is placed in one arm of a Wheatstone bridge with each of the other arms also being 100 ohm. If the resistance temperature coefficient of the platinum is 0.0039/K, find the output voltage from the bridge per degree chang ...
Bab 3
... The current for this field coil can be provided by placing the coil in series with the armature or parallel (shunt). In some cases the field is composed of two windings, one of each type. This is a compound motor. Characteristics of DC motors with a field coil are as follows. 1. Series field. Th ...
... The current for this field coil can be provided by placing the coil in series with the armature or parallel (shunt). In some cases the field is composed of two windings, one of each type. This is a compound motor. Characteristics of DC motors with a field coil are as follows. 1. Series field. Th ...
Mains Frequency to Current/ Voltage Converter E1 - Lee
... measured input is isolated, filtered, squared-up and offered to a precision frequency to current converter. The current is amplified and compared to an accurate reference. A symmetrical dc amplifier converts the resultant to the required voltage or current ouput suited to driving meters, computer in ...
... measured input is isolated, filtered, squared-up and offered to a precision frequency to current converter. The current is amplified and compared to an accurate reference. A symmetrical dc amplifier converts the resultant to the required voltage or current ouput suited to driving meters, computer in ...
600V XPT IGBTs
... These IGBTs are available with IXYS’ Sonic-FRDTM and HiPerFREDTM anti-parallel ultra-fast diodes (Sonic-FRDTM – Suffix H1, ie. IXXK100N60C3H1) (HiPerFREDTM – Suffix D1, ie. IXXH50N60C3D1). The ...
... These IGBTs are available with IXYS’ Sonic-FRDTM and HiPerFREDTM anti-parallel ultra-fast diodes (Sonic-FRDTM – Suffix H1, ie. IXXK100N60C3H1) (HiPerFREDTM – Suffix D1, ie. IXXH50N60C3D1). The ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... Traditionally power inverters can be broadly classified either as voltage-source inverter (VSI) or current source inverter (CSI). They both suffer from the common limitation that they are either boost or buck converter and cannot be a buck-boost converter. That is, their obtainable output voltageran ...
... Traditionally power inverters can be broadly classified either as voltage-source inverter (VSI) or current source inverter (CSI). They both suffer from the common limitation that they are either boost or buck converter and cannot be a buck-boost converter. That is, their obtainable output voltageran ...
MOD IV
... switches can be BJTs, thyristors, Mosfets, IGBTs etc. The choice of power switch will depend on rating requirements and ease with which the device can be turned on and off. A single-phase inverter will contain two or four power switches arranged in half-bridge or full-bridge topologies. Half-bridges ...
... switches can be BJTs, thyristors, Mosfets, IGBTs etc. The choice of power switch will depend on rating requirements and ease with which the device can be turned on and off. A single-phase inverter will contain two or four power switches arranged in half-bridge or full-bridge topologies. Half-bridges ...
Introduction to iXBlue Mach-Zehnder Modulators Bias Controllers
... desired operating point is reached. In such conditions, the voltage will have to be readjusted manually in case of drift of the modulator. This may be workable in laboratory with low drift modulators and stable environmental conditions However, for a long term operation and especially in all systems ...
... desired operating point is reached. In such conditions, the voltage will have to be readjusted manually in case of drift of the modulator. This may be workable in laboratory with low drift modulators and stable environmental conditions However, for a long term operation and especially in all systems ...
Transient Response
... In the Transient pop-up window, set a Step Ceiling that is a small fraction of the period of the sinusoid that you are plotting. ...
... In the Transient pop-up window, set a Step Ceiling that is a small fraction of the period of the sinusoid that you are plotting. ...
슬라이드 1
... ① If "-" terminal of a rectifier is connected to the minus (or invertery terminal), the output of the amp. is positive. if it converts, a negative output result. ② An ac signal input into the inverting terminal yields an output that is 180 deg. out of phase. ...
... ① If "-" terminal of a rectifier is connected to the minus (or invertery terminal), the output of the amp. is positive. if it converts, a negative output result. ② An ac signal input into the inverting terminal yields an output that is 180 deg. out of phase. ...
DK124 - Grupo Autcomp
... There is self-power supply circuit inside the IC, which can control the power voltage about 5V for the electricity consumption of the IC itself. It can only afford the electricity consumption of itself only but can not afford for the external circuit. ...
... There is self-power supply circuit inside the IC, which can control the power voltage about 5V for the electricity consumption of the IC itself. It can only afford the electricity consumption of itself only but can not afford for the external circuit. ...
Week-11
... The diode allows to current to flow only one-way The diode also requires about 0.6 volts to function causing a small voltage drop to occur Connect the lamp to the diode to load the circuit Use the oscilloscope to measure the input and output waveforms ...
... The diode allows to current to flow only one-way The diode also requires about 0.6 volts to function causing a small voltage drop to occur Connect the lamp to the diode to load the circuit Use the oscilloscope to measure the input and output waveforms ...
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.