ece2201_lab3
... performance? Would these changes have any other effects on circuit performance (e.g. output high and low logic levels as discussed in part W6). LIGHT EMITTING DIODE (LED) DRIVER W12. Design: Using your data from part L6 for rDS with a +5V gate drive at vGS, determine the resistance R2 required so th ...
... performance? Would these changes have any other effects on circuit performance (e.g. output high and low logic levels as discussed in part W6). LIGHT EMITTING DIODE (LED) DRIVER W12. Design: Using your data from part L6 for rDS with a +5V gate drive at vGS, determine the resistance R2 required so th ...
BD9300F
... comparatively simple. Since the DC/DC converter application has a LC resonant circuit attached to the output, a –180˚ phase-delay occurs in that area. If ESR component is present there, however, a +90˚ phase-lead occurs to shift the phase delay to –90˚. Since the phase delay is desired to set within ...
... comparatively simple. Since the DC/DC converter application has a LC resonant circuit attached to the output, a –180˚ phase-delay occurs in that area. If ESR component is present there, however, a +90˚ phase-lead occurs to shift the phase delay to –90˚. Since the phase delay is desired to set within ...
Feasibility Study of Replacing an Industrial Hydraulic
... Compact system Self-locking during manual operation with no vibration when using 20:1 or higher gear ratio. 5. Will not back-drive during mechanical failure with 20:1 or higher ratio. 6. Corrosion resistant 7. Preferred for static vibration 8. Slower travel speed compared to hydraulic, ball screw, o ...
... Compact system Self-locking during manual operation with no vibration when using 20:1 or higher gear ratio. 5. Will not back-drive during mechanical failure with 20:1 or higher ratio. 6. Corrosion resistant 7. Preferred for static vibration 8. Slower travel speed compared to hydraulic, ball screw, o ...
$doc.title
... Magnetics: This design uses only one inductor. This provides a ‘low–pass filter’ to the output switching ripple; to turn the AC to DC. The designer must be very aware of maximum current expected across the inductor. Switching frequency must also be considered in the core selection. Simple ferrite to ...
... Magnetics: This design uses only one inductor. This provides a ‘low–pass filter’ to the output switching ripple; to turn the AC to DC. The designer must be very aware of maximum current expected across the inductor. Switching frequency must also be considered in the core selection. Simple ferrite to ...
LM334 datasheet
... At slew rates above a threshold (see curve) the LM134, LM234, LM334 can have a non-linear current characteristic. The slew rate at which this takes place is directly proportional to Iset. At Iset = 10µA, dv/dt max. = 0.01V/µS ; at Iset = 1mA, dv/dt max. = 1V/µS. Slew rates of more than 1V/µS do not ...
... At slew rates above a threshold (see curve) the LM134, LM234, LM334 can have a non-linear current characteristic. The slew rate at which this takes place is directly proportional to Iset. At Iset = 10µA, dv/dt max. = 0.01V/µS ; at Iset = 1mA, dv/dt max. = 1V/µS. Slew rates of more than 1V/µS do not ...
MP3900DK-LF-Z Datasheet
... peak current limiting are all provided to minimize the external component count. In a boost application, with an output voltage of less than 30V, the current sense pin can connect directly to the drain of the external switch. This eliminates the requirement for an additional current sensing element ...
... peak current limiting are all provided to minimize the external component count. In a boost application, with an output voltage of less than 30V, the current sense pin can connect directly to the drain of the external switch. This eliminates the requirement for an additional current sensing element ...
EUP8057 Advanced 1A Linear Charge Management Controllers
... Selecting Input Capacitor In most applications, all that is needed is high-frequency decoupling capacitor. A 0.1µF ceramic, placed in proximity to VCC and VSS pins, works well. The EUP8057 works with both regulated and unregulated external dc supplies. If a non-regulated supply is chosen, the supply ...
... Selecting Input Capacitor In most applications, all that is needed is high-frequency decoupling capacitor. A 0.1µF ceramic, placed in proximity to VCC and VSS pins, works well. The EUP8057 works with both regulated and unregulated external dc supplies. If a non-regulated supply is chosen, the supply ...
Low-noise computer-controlled current source for quantum
... (CLK), data (SDI), and chip select (CS)—are sent individually from the digital outputs of the controlling computer to LED transmitters (Agilent HFBR-1412T) which convert the electrical signals to optical signals. The light travels across three 62.5/ 125 m optical fibers, each 10 m in length, to a b ...
... (CLK), data (SDI), and chip select (CS)—are sent individually from the digital outputs of the controlling computer to LED transmitters (Agilent HFBR-1412T) which convert the electrical signals to optical signals. The light travels across three 62.5/ 125 m optical fibers, each 10 m in length, to a b ...
FAN6862H / FAN6862HR Highly Integrated Green-Mode PWM Controller
... integrates frequency-hopping function internally, which helps reduce EMI emission of a power supply with minimum line filters. The built-in synchronized slope compensation is proprietary saw-tooth compensation for constant output power limit over universal AC input range. The gate output is clamped ...
... integrates frequency-hopping function internally, which helps reduce EMI emission of a power supply with minimum line filters. The built-in synchronized slope compensation is proprietary saw-tooth compensation for constant output power limit over universal AC input range. The gate output is clamped ...
June 2006 Dual Step-Up Converter Drives White LEDs with 1000:1
... the LEDs are turned off as the CTRL pin voltage is pulled below 75mV. Another method of reducing the brightness of the LEDs is digital PWM dimming. The PWM MOSFET in series with the LEDs creates the waveform shown in Figure 4 when the string of LEDs is PWM’d at 100mA constant current. During PWM on- ...
... the LEDs are turned off as the CTRL pin voltage is pulled below 75mV. Another method of reducing the brightness of the LEDs is digital PWM dimming. The PWM MOSFET in series with the LEDs creates the waveform shown in Figure 4 when the string of LEDs is PWM’d at 100mA constant current. During PWM on- ...
UCC3884 数据资料 dataSheet 下载
... An accurate programmable volt-second technique clamps the duty cycle. The duty cycle limit is inversely proportional to input voltage and a resistor divider network is used to program the proportionality constant. At a given input voltage and constant load, under closed loop control, the operating d ...
... An accurate programmable volt-second technique clamps the duty cycle. The duty cycle limit is inversely proportional to input voltage and a resistor divider network is used to program the proportionality constant. At a given input voltage and constant load, under closed loop control, the operating d ...
Manual - HP Archive
... Assume the output level h a s been set with R19 and s o m e change h a s occurred which causes the output voltage to rise. The voltage at the base of 43 is that which would appear across a forward biased diode and is essentially constant. The electron current flow through R20 is constant. When the o ...
... Assume the output level h a s been set with R19 and s o m e change h a s occurred which causes the output voltage to rise. The voltage at the base of 43 is that which would appear across a forward biased diode and is essentially constant. The electron current flow through R20 is constant. When the o ...
Demagnetisation of CT cores under exposure of operating currents
... loop superimposed to the remanence point established by the initial magnetization. At the end of the positive half wave, the magnetization is more or less back where it started off when the current was applied. During the negative half wave, the magnetisation is heavily eroded as long the magnitude ...
... loop superimposed to the remanence point established by the initial magnetization. At the end of the positive half wave, the magnetization is more or less back where it started off when the current was applied. During the negative half wave, the magnetisation is heavily eroded as long the magnitude ...
Motor Mind B enhanced Motor Controller Data
... update (PWM = PI/2 ). So making the PISCALAR larger reduces the PWM (divides it by 2), decreasing it increases the PWM (doubles it). Therefore, the PISCALAR will have a large effect on the way PI mode drives the motor. If your motor is ramping (zooms up to top speed, then back to zero) increase the ...
... update (PWM = PI/2 ). So making the PISCALAR larger reduces the PWM (divides it by 2), decreasing it increases the PWM (doubles it). Therefore, the PISCALAR will have a large effect on the way PI mode drives the motor. If your motor is ramping (zooms up to top speed, then back to zero) increase the ...
ba50/75/100 series
... range of the amplifier by a factor associated with that switch. For example closing only SW1-4 (54%) on a BA50 limits the output current to 27 Amp. Therefore, a 10 Volt input signal would produce a 27 Amp output; similarly, a 5 Volt input would produce a 13.5 Amp output (5V / 10V * 27A). It should b ...
... range of the amplifier by a factor associated with that switch. For example closing only SW1-4 (54%) on a BA50 limits the output current to 27 Amp. Therefore, a 10 Volt input signal would produce a 27 Amp output; similarly, a 5 Volt input would produce a 13.5 Amp output (5V / 10V * 27A). It should b ...
Preliminary Datasheet
... constant frequency, current mode control scheme to provide excellent line and load regulation. Operation can be best understood by referring to Figure 3 and Figure 17. At the start of each oscillator cycle, switch Q1 turns on. The switch current will increase linearly. The voltage on sense resistor ...
... constant frequency, current mode control scheme to provide excellent line and load regulation. Operation can be best understood by referring to Figure 3 and Figure 17. At the start of each oscillator cycle, switch Q1 turns on. The switch current will increase linearly. The voltage on sense resistor ...
MOSFETs Basics
... driver cannot support large initial currents. A further parasitic capacitance and transistor exist between drain and source but due to the internal structure the transistor appears as a diode and capacitor connected between drain and source as shown in Figure 6b. Unfortunately the parasitic diode do ...
... driver cannot support large initial currents. A further parasitic capacitance and transistor exist between drain and source but due to the internal structure the transistor appears as a diode and capacitor connected between drain and source as shown in Figure 6b. Unfortunately the parasitic diode do ...
Driving LEDs with a PIC Microcontroller
... by means of an A/D module. The signal to be converted is chosen by software, and forwarded to the A/D module. This module requires a constant reference voltage. The voltage can either be applied externally at an input pin, or internally via a so-called voltage reference module. In the latter case, t ...
... by means of an A/D module. The signal to be converted is chosen by software, and forwarded to the A/D module. This module requires a constant reference voltage. The voltage can either be applied externally at an input pin, or internally via a so-called voltage reference module. In the latter case, t ...
Fundamental Characteristics of Thyristors
... DIACs used in typical phase control circuits are basically protected against excessive current at breakover as long as the firing capacitor is not excessively large. When DIACs are used in a zener function, current limiting is necessary. ...
... DIACs used in typical phase control circuits are basically protected against excessive current at breakover as long as the firing capacitor is not excessively large. When DIACs are used in a zener function, current limiting is necessary. ...
Optimizing Resistor Dividers at a Comparator
... Sense inputs and Power Fail Inputs (PFI) on supply voltage supervisors (SVS) or low battery inputs (LBI) on switching regulator devices. The threshold voltage is set by the ratio of the two resistors in the divider. Keeping the ratio constant, there are tradeoffs to consider for selecting the actual ...
... Sense inputs and Power Fail Inputs (PFI) on supply voltage supervisors (SVS) or low battery inputs (LBI) on switching regulator devices. The threshold voltage is set by the ratio of the two resistors in the divider. Keeping the ratio constant, there are tradeoffs to consider for selecting the actual ...
Stepper motor
A stepper motor or step motor or stepping motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor (an open-loop controller), as long as the motor is carefully sized to the application in respect to torque and speed.Switched reluctance motors are very large stepping motors with a reduced pole count, and generally are closed-loop commutated.