FvM
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Today, 19:15Surely, that's how laser diodes are usually specified. I see that 4.5 to 5 V supply voltage is the only substantial spec at Ebay. I read the...13 replies | 184 view(s) -
Today, 18:55The nature of Io as bias current is suggested by using a capital letter, also by symmetry considerations, you have i0a=Io+gmc*v1 and i0b=Io-gmc*v1.7 replies | 151 view(s)
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Today, 18:08The picture in post #1 without the handwritten supplement is copied from lecture module 31, page 14. For the verbose explanation, see module 28 Smith...16 replies | 439 view(s)
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Today, 15:02Io + gmc*V1 is just copied from post #1...7 replies | 151 view(s)
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Today, 14:50The question makes no sense without a specification of the laser module. I presume you have at least a voltage/current/case temperature spec or are...13 replies | 184 view(s)
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Today, 14:33As stated by Georgy.Moshkin, the brown circles are constant conductance curves. But they are normalized for Z0. You can also draw circles that...16 replies | 439 view(s)
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Today, 12:48FvM replied to a thread Signal to noise ratio of the operational amplifier in Analog Integrated Circuit (IC) Design, Layout and FabricationI assume that the "noise floor" in some measurements is caused by a rectangular FFT window not corresponding exactly to an integer number of sine...22 replies | 609 view(s)
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Today, 11:42The term "scaling" doesn't seem to be a commonly understood technical term related to level sensors and salt water. Which problems are you observing...3 replies | 145 view(s)
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Yesterday, 20:26Curiously you are adding more and more demanding specifications, first -40 to 200 °C temperature range, then something like 0.2° accuracy....10 replies | 320 view(s)
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Yesterday, 19:40FvM replied to a thread VFD to control 3 phase AC induction motor 400V 6000 rpm in Power ElectronicsObviously it can be connected star or delta. The question is, which configuration is used for 400V, full power, in other words, is it a 230/400V or a...18 replies | 626 view(s)
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Yesterday, 18:08The relation is primarily between flux delta, frequency and core losses. For a given core, flux is roughly proportional to ampere turns. For a first...3 replies | 144 view(s)
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Yesterday, 18:01FvM replied to a thread Help needed to reduce Harmonics from a firing angle control circuit in Power ElectronicsThe low maximum duty cycle demands for redesigning the heater.5 replies | 268 view(s)
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Yesterday, 17:58FvM replied to a thread VFD to control 3 phase AC induction motor 400V 6000 rpm in Power ElectronicsThe available torque of an asynchronous motor will reduce roughly with the square of applied voltage. Running a motor with double frequency and same...18 replies | 626 view(s)
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Yesterday, 17:33Like Georgy.Moshkin I don't see two Smiths charts.16 replies | 439 view(s)
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Yesterday, 17:27FvM replied to a thread Signal to noise ratio of the operational amplifier in Analog Integrated Circuit (IC) Design, Layout and FabricationThe effective bits are apparently including THD which isn't noise. The noise floor should be reevaluated with appropriate windowing, it doesn't look...22 replies | 609 view(s)
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Yesterday, 16:04Yeah I had missed that. Once condition1 occurs, only the reset can change the value of start_reading. Post#4 is a better answer and I have similar...4 replies | 156 view(s) -
Yesterday, 15:57dpaul replied to a thread Using if-else generate to make dynamic hardware implementation using FPGA in PLD, SPLD, GAL, CPLD, FPGA DesignI am assuming that the OP has understood that in post#2, the SOME_CONDITION must be specified during compile time (synth & impl) .....when? At run...4 replies | 114 view(s)
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21st March 2019, 23:24FvM replied to a thread VFD to control 3 phase AC induction motor 400V 6000 rpm in Power ElectronicsI'm already stumbling upon the motor specification. What is it? 6000 rpm at 100 Hz? Industry standard motors are specified for either 50 or 60 Hz.18 replies | 626 view(s)
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21st March 2019, 22:03FvM replied to a thread 3 phase 400Vac 5000W Full bridge converter power factor correction Buck or Boost type in Power ElectronicsI don't know what's sufficient for x1.3 peak current, depends on the DC/DC stiffness. You should simulate the behaviour accurately before fixing the...37 replies | 1276 view(s)
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21st March 2019, 19:29FvM replied to a thread 3 phase 400Vac 5000W Full bridge converter power factor correction Buck or Boost type in Power ElectronicsNo. Without energy storage, each single phase converter has output current swinging between 0 and 2*Iavg. You can either implement energy storage...37 replies | 1276 view(s)
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21st March 2019, 15:48I would say it depends how timing critical is the setting of read_en <= 1'b1 in your design and how frequently condition1 is toggling. It is always...4 replies | 156 view(s)
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21st March 2019, 11:44dpaul replied to a thread Verilog code to find modular inverse value in PLD, SPLD, GAL, CPLD, FPGA DesignA quick online search comes up with some links. I found this one sleek & short - https://github.com/NetFPGA/netfpga/wiki/VerilogCodingGuidelines ...5 replies | 184 view(s)
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21st March 2019, 09:47Sure. Any operation point with asymmetric duty cycle. Peak current translates with winding ratio, average and rms does not.9 replies | 319 view(s)
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21st March 2019, 09:43dpaul replied to a thread Verilog code to find modular inverse value in PLD, SPLD, GAL, CPLD, FPGA DesignNo you have not. Please read a good tutorial on Verilog as to how should one write synth code. I stop looking further at your code when I see that...5 replies | 184 view(s)
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21st March 2019, 09:38FvM replied to a thread 3 phase 400Vac 5000W Full bridge converter power factor correction Buck or Boost type in Power ElectronicsThe threefold single phase solution has been already discussed at the begin of this thread. It's feasible but has some disadvantages. E.g. the energy...37 replies | 1276 view(s)
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21st March 2019, 09:21No, both average and rms are modified by the primary to secondary duty cycle ratio.9 replies | 319 view(s)
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