FvM -

Today, 18:56

FvM replied to a thread Micro-sd or sd card to USB adapter in Elementary Electronic Questions

The OP wants a SD card emulator rather than a reader. The mentioned WiFi-sdcard option can be a solution, I wonder if some hosts power down the SD...

8 replies | 638 view(s)

Today, 18:13

FvM replied to a thread HRTIM in STM32F334 as crystal replacement? in Microcontrollers

Sure you can setup 13.538 MHz output with HRTIM? What are the register settings? - - - Updated - - - Read a bit about HRTIM high-resolution...

6 replies | 69 view(s)

Today, 17:58

FvM replied to a thread What is output voltage of 3 phase vfd in Power Electronics

As designed in your (or my) example, threefold fundamental frequency.

18 replies | 345 view(s)

Today, 17:21

FvM replied to a thread [SOLVED] What are the best software to simulate a boost converter with current control ? in Analog Circuit Design

I must confess that I didn't yet look into the transfer function details. My general control system experience tells that large signal behavior is a...

49 replies | 2316 view(s)

Today, 16:34

FvM replied to a thread [SOLVED] What are the best software to simulate a boost converter with current control ? in Analog Circuit Design

I'm referring to the time domain solution. You can see that compensator output exceeds the Iref range for useful boost operation. That's why...

49 replies | 2316 view(s)

Today, 16:30

FvM replied to a thread What is output voltage of 3 phase vfd in Power Electronics

Not sure what you mean.

18 replies | 345 view(s)

Today, 16:27

FvM replied to a thread HRTIM in STM32F334 as crystal replacement? in Microcontrollers

Please refer to the answer in post #2. The other point is that the processor core still requires a clock source which can't be provided by the...

6 replies | 69 view(s)

Today, 16:25

FvM replied to a thread multiple registers inside if-else of an always block in ASIC Design Methodologies and Tools (Digital)

I don't understand what you mean with internal reg. If you use regs in a clock sensitive always block, they are inferring storage elements (DFF, in...

15 replies | 285 view(s)

Today, 15:35

FvM replied to a thread What is output voltage of 3 phase vfd in Power Electronics

There different possible common mode signals with threefold frequency. The shown sine signal should be fine. Strictly viewn, the maxima of the...

18 replies | 345 view(s)

Today, 15:24

FvM replied to a thread What is written into FLASH really when using MCS file? in PLD, SPLD, GAL, CPLD, FPGA Design

As said, it may be O.K. in this case. You should check if the hex file is using continuous addresses up to the end (the 0000, 0010, 0020 field). If...

5 replies | 159 view(s)

Today, 15:21

FvM replied to a thread EGS002 inverter project help in Power Electronics

E.g. measuring with an oscilloscope.

7 replies | 69 view(s)

Today, 15:16

FvM replied to a thread multiple registers inside if-else of an always block in ASIC Design Methodologies and Tools (Digital)

The variables have to be declared somewhere, which has been omitted in my code example snippet. It's not the point where the variables are declared....

15 replies | 285 view(s)

Today, 14:51

FvM replied to a thread What is written into FLASH really when using MCS file? in PLD, SPLD, GAL, CPLD, FPGA Design

That's correct for the example Intel hex file which contains continuous data starting at address 0. But Intel hex data isn't necessarily continuous...

5 replies | 159 view(s)

Today, 14:45

FvM replied to a thread P82B715 I2C Bus Extender Heats or Not (SOIC package) in Digital communication

If this is one directional on/off signaling, I don't see the purpose of using I2C extenders.

2 replies | 56 view(s)

Today, 14:37

FvM replied to a thread Glass encapsulated components, what are they used for? in Analog Circuit Design

A chip capacitor encapsulated in glass has unlikely soldered wires. More likely welded. And it's a wired rather than SMD component… Reasons are...

5 replies | 49 view(s)

Today, 14:30

FvM replied to a thread multiple registers inside if-else of an always block in ASIC Design Methodologies and Tools (Digital)

reg reg1 = init1; Why not read the verilog language reference or simply trying if your compiler accepts it? The "variable declaration...

15 replies | 285 view(s)

Today, 14:09

FvM replied to a thread Glass encapsulated components, what are they used for? in Analog Circuit Design

Not actually. It's a very vague description that can mean a lot of different parts. Are you even sure it's a capacitor.

5 replies | 49 view(s)

Today, 14:00

FvM replied to a thread Measuring the time of the zero crossings in Microcontrollers

uint8_t is defined in stdint.h XC8 doesn't include it by default. A typical XC8 source starts with #include < xc.h> #include < stdint.h> #include...

19 replies | 385 view(s)

Today, 13:44

FvM replied to a thread Glass encapsulated components, what are they used for? in Analog Circuit Design

Used for very high ohmic circuits, e.g. "electrometer" amplifiers to prevent against leakage currents caused by air moisture. More common for multi...

5 replies | 49 view(s)

Today, 13:36

FvM replied to a thread EGS002 inverter project help in Power Electronics

EGS002 is the driver board, the SPWM ASIC is SG8010. The SG8010 datasheet specifies the criterion for undervoltage lockout, you need to measure...

7 replies | 69 view(s)

Today, 12:06

FvM replied to a thread What is output voltage of 3 phase vfd in Power Electronics

Here's the resulting three phase waveform

18 replies | 345 view(s)

Today, 11:18

FvM replied to a thread HRTIM in STM32F334 as crystal replacement? in Microcontrollers

Does the high resolution timer provide high resolution timer period? I don't see how.

6 replies | 69 view(s)

Today, 09:20

FvM replied to a thread What is output voltage of 3 phase vfd in Power Electronics

In the narrower sense, space vector modulation is a specific method to generate the three phase voltage system required by an AC motor. More...

18 replies | 345 view(s)

Today, 08:50

FvM replied to a thread PIC16F1947...Input impedance of ADC is 82k instead of the required 10k in Microcontrollers

Setting the focus on "signal follow" probably overlooks the charge injection by the ADC capacitor. Increasing the source resistance without providing...

6 replies | 109 view(s)

Today, 08:42

FvM replied to a thread High Freq XFMR winding optimization for DC resistance ? in Power Electronics

Thanks for hinting to the Stan Zurek paper again. A brief reading shows that it's all about how to eliminate proximity effect as far as possible,...

33 replies | 666 view(s)

Yesterday, 21:42

FvM replied to a thread PIC16F1947...Input impedance of ADC is 82k instead of the required 10k in Microcontrollers

82k is O.K. if you can afford 3 bit accuracy loss. Otherwise you should consider to follow the datasheet specifications.

6 replies | 109 view(s)

Yesterday, 18:48

FvM replied to a thread Transfer function for a dual band pass filter (small task from network theory) in Elementary Electronic Questions

Here's a Ltspice circuit of the first network. Can you explain the meaning of the inductor parameter aL for the lossy circuit? qC and QL means...

15 replies | 983 view(s)

Yesterday, 17:31

FvM replied to a thread High speed Mosfet drive - 15MHz ? in Analog Circuit Design

The IC isn't but a complementary NPN/PNP array. You can refer to more detailed specified discrete Zetex transistors like ZXTN2031 and ZXTP2025 as a...

1 replies | 57 view(s)

Yesterday, 17:24

FvM replied to a thread Input Filter desing for 1KW SMPS in Power Electronics

We usually have LC low pass filters for PFC, cut off frequency 1/10 to 1/5 of PFC switching frequency.

15 replies | 503 view(s)

Yesterday, 17:21

FvM replied to a thread What is the advantage and disadvantage of Fly by topology and T topology ?? in PCB Routing Schematic Layout software and Simulation

DDR3 is designed to support flight time compensation (write levelling), DDR2 isn't. Consider that some simplified DDR3 controllers are lacking the...

1 replies | 94 view(s)