Heathkit SB-200 - Orange County (California) Amateur Radio Club
... upgraded the capacitors to 180µF, (a total capacity of 30 µF) a much more reasonable value; their board also includes higher performance diodes, precision metering resistors and a more efficient bleeder resistor chain. Another place on the web, (or it might have been the same site) comments that the ...
... upgraded the capacitors to 180µF, (a total capacity of 30 µF) a much more reasonable value; their board also includes higher performance diodes, precision metering resistors and a more efficient bleeder resistor chain. Another place on the web, (or it might have been the same site) comments that the ...
NCP1522B - Step-Down DC-DC Converter
... mode switch Q1 and Q2 and the control circuits are all turned off. The device restarts in soft−start after the temperature drops below 135°C. This feature is provided to prevent catastrophic failures from accidental device overheating, and it is not intended as a substitute for proper heatsinking. ...
... mode switch Q1 and Q2 and the control circuits are all turned off. The device restarts in soft−start after the temperature drops below 135°C. This feature is provided to prevent catastrophic failures from accidental device overheating, and it is not intended as a substitute for proper heatsinking. ...
Distributed Generation at Clemson University
... voltage and three phase faults in terms of current. • Due to DG, transient fault current peaks increase for both types of fault. • Transient voltage rise when fault clears is same with/without DG • If DG is solidly grounded, voltage rise of healthy phases for single-phase faults can be less severe, ...
... voltage and three phase faults in terms of current. • Due to DG, transient fault current peaks increase for both types of fault. • Transient voltage rise when fault clears is same with/without DG • If DG is solidly grounded, voltage rise of healthy phases for single-phase faults can be less severe, ...
Temperature Insensitive Current Reference for the 6.27 MHz Oscillator
... which indicates that the temperature coefficient of VGS is a negative quantity. B. Temperature Independent Current Reference This section presents a temperature-compensated current reference, which is use an n-channel MOS transistor to operate in the weak inversion region [16]. In Fig.1, the circuit ...
... which indicates that the temperature coefficient of VGS is a negative quantity. B. Temperature Independent Current Reference This section presents a temperature-compensated current reference, which is use an n-channel MOS transistor to operate in the weak inversion region [16]. In Fig.1, the circuit ...
INA137 数据资料 dataSheet 下载
... performance. Very low distortion, low noise, and wide bandwidth provide superior performance in high quality audio applications. Laser-trimmed matched resistors provide optimum common-mode rejection (typically 90dB), especially when compared to circuits implemented with an op amp and discrete precis ...
... performance. Very low distortion, low noise, and wide bandwidth provide superior performance in high quality audio applications. Laser-trimmed matched resistors provide optimum common-mode rejection (typically 90dB), especially when compared to circuits implemented with an op amp and discrete precis ...
Charging Systems-General
... measure the output-voltage of the unit itself and regulate the input AC accordingly by shorting more or less power to ground, an equal amount off all three phases. ...
... measure the output-voltage of the unit itself and regulate the input AC accordingly by shorting more or less power to ground, an equal amount off all three phases. ...
Calibrating voltage input signal conditioners using the Fluke 787
... and 0-5 V input levels. Typical outputs of these devices are an isolated or non-isolated 0-10 V or 4-20 mA. Signal conditioners with inputs of 1-5 V or 2-10 V are also prevalent in many applications and usually derive their inputs from a resistor in series with a 4-20 mA loop. Resistors with values ...
... and 0-5 V input levels. Typical outputs of these devices are an isolated or non-isolated 0-10 V or 4-20 mA. Signal conditioners with inputs of 1-5 V or 2-10 V are also prevalent in many applications and usually derive their inputs from a resistor in series with a 4-20 mA loop. Resistors with values ...
Power Electronics 2 Flyback SMPS
... the switch to maintain the output voltage within a small tolerable ripple voltage band around the desired output value. • If the load is very light, very small amount of energy needs to be input to the circuit in each switching cycle. This is achieved by keeping the ON duration of the switch low, re ...
... the switch to maintain the output voltage within a small tolerable ripple voltage band around the desired output value. • If the load is very light, very small amount of energy needs to be input to the circuit in each switching cycle. This is achieved by keeping the ON duration of the switch low, re ...
Delphi series DNT12 Non-Isolated Point of Load
... installed in compliance with the spacing and separation requirements of the end-use safety agency standards. For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the input must meet SELV requirements. The power module has extra-low voltage (ELV) outp ...
... installed in compliance with the spacing and separation requirements of the end-use safety agency standards. For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the input must meet SELV requirements. The power module has extra-low voltage (ELV) outp ...
3-0369 HiTest Arrester Brochure
... OPERATION The Hi-Test Arrester/Leakage Tester has two test leads which, when connected to the top and bottom of the arrester, enables the user to increase the DC voltage that is being applied to the arrester. The user can then measure the exact voltage at which the arrester conducts. The unit will d ...
... OPERATION The Hi-Test Arrester/Leakage Tester has two test leads which, when connected to the top and bottom of the arrester, enables the user to increase the DC voltage that is being applied to the arrester. The user can then measure the exact voltage at which the arrester conducts. The unit will d ...
Current source
A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it.A current source is the dual of a voltage source. The term constant-current 'sink' is sometimes used for sources fed from a negative voltage supply. Figure 1 shows the schematic symbol for an ideal current source, driving a resistor load. There are two types - an independent current source (or sink) delivers a constant current. A dependent current source delivers a current which is proportional to some other voltage or current in the circuit.