FvM
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Today, 19:26Max. Vgs,th of 4.5V of VP0808 is relative high, you probably won't find any devices with Vgs,th,min > 3.3V.6 replies | 301 view(s) -
Today, 11:41Old MPLAB versions like 5.4 and 5.7 can be downloaded from Microchip https://www.microchip.com/development-tools/pic-and-dspic-downloads-archive -...2 replies | 174 view(s)
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Today, 11:35You want to study the operation principle of Hochiki and similar smoke and fire detection systems. Essentially you have a bus line powered with...2 replies | 102 view(s)
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Today, 11:26FvM replied to a thread Synchronous Two trasnsistor forward goes wrong....too high reverse inductor current in Power ElectronicsLarge value of C19 produces inappropriate sync waveform and prevents the time-out circuit from turning off the rectifier MOSFETs. Try with 100 pF or...2 replies | 144 view(s)
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Today, 10:58C30 is Microchips previous compiler for PIC24 and dsPIC families and has been replaced by MPLAB XC16. Both are based on GNU C and thus mostly...1 replies | 49 view(s)
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Today, 10:53A high speed CMOS buffer, e.g. 74AHC series works perfectly. The series resistance should be adjusted for the buffer output resistance.8 replies | 296 view(s)
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Yesterday, 13:41The input impedance of an ideal transmission line terminated with its characteristic impedance is just this impedance, in your example equivalent to...8 replies | 296 view(s)
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Yesterday, 12:45FvM replied to a thread Half Bridge SMPS in Current Mode but with slope compensation is OK? in Power ElectronicsYes, you are right. Current mode is established by also connecting pin 7 to the current sense signal. The reservations about usefulness of this...4 replies | 179 view(s)
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Yesterday, 12:35FvM replied to a thread How to do power measurement in LT SpiceXVII in Software Problems, Hints and ReviewsReview the waveform arithmetic chapter in the Ltspice online help. Voltage, current and power quantities of switched mode circuits are mostly...2 replies | 178 view(s)
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Yesterday, 12:03FvM replied to a thread [SOLVED] Transformers on a PCB in Hobby Circuits and Small Projects ProblemsThe magnetic stray field of audio transformers isn't expected to cause problems in your circuit, unless it involves very high gain (e.g. G>100). If...10 replies | 409 view(s)
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Yesterday, 11:57FvM replied to a thread Convert real to 2's complement & vice versa in Verilog in PLD, SPLD, GAL, CPLD, FPGA DesignYou should read the description of conversion functions in clause 20.5 of the Verilog LRM. $realtobits() is generating 64 bit IEEE float value. ...1 replies | 170 view(s)
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Yesterday, 11:46FvM replied to a thread Half Bridge SMPS in Current Mode but with slope compensation is OK? in Power ElectronicsI see a misunderstanding involved with the 280W Half Bridge Converter design example. MC34025 is no current mode controller. It's a voltage mode...4 replies | 179 view(s)
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Yesterday, 11:29Photo resolution is too low to see details. Would prefer a microscope photo with diffuse lighting. To me, the pad surface looks partly like silver...3 replies | 179 view(s)
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13th December 2019, 14:11If the duty cycle respectively average power is low, I would suggest an analog output stage, powered by a capacitor bank. Take care that the output...3 replies | 180 view(s)
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13th December 2019, 13:56BPSK doesn't involve quadrature modulation, see https://en.wikipedia.org/wiki/Phase-shift_keying1 replies | 183 view(s)
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13th December 2019, 11:48Already heard about ohms law? Use a series resistor. 10V/100µA = 100 kOhm.6 replies | 172 view(s)
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13th December 2019, 11:45I thought you already answered the question yourself. You have explained the simulation result, the real MOSFET has apparently much lower threshold...6 replies | 301 view(s)
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13th December 2019, 09:40Confusing description. Actually E is pulsed high for Pweh >= 450 ns. E is pulsed for each byte read from or written to the LCD controller. In so...4 replies | 267 view(s)
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12th December 2019, 17:51Only with the necessary corrections, e.g. the suggested gain setting resistor.10 replies | 361 view(s)
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12th December 2019, 16:11How did you arrive at this circuit? It doesn't seem right. Can you give a gain specification?10 replies | 361 view(s)
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12th December 2019, 15:47There are quite different types of ferrite beads, e.g. beads on leads, surface mount beads, chip beads, wound beads, with different impedance and...2 replies | 200 view(s)
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12th December 2019, 08:45Forgot to show the circuit?10 replies | 361 view(s)
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12th December 2019, 08:43FvM replied to a thread How to access Micron MT25Q nor flash in Embedded Linux and Real-Time Operating Systems (RTOS)It's more likely that the preceding write didn't succeed. It's not clear how the waveforms (apparently from a simulator) are related to your...4 replies | 375 view(s)
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9th December 2019, 23:47FvM replied to a thread Bilinear switched capacitor resistor equivalent resistance in Analog Circuit DesignThe capacitor is charging from -ΔV to +ΔV in phase 1 and back in phase 2, total q = 4CΔV.4 replies | 302 view(s)
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9th December 2019, 23:16As shown by wwfeldmann, the post #1 equation has real roots. Similarly the equation in post #5 has two real roots, x=3.987 isn't among it, but x≈-1.2...11 replies | 690 view(s)
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9th December 2019, 22:42FvM replied to a thread LTspice...splitting LT1243 output into two separate pulse streams in PCB Routing Schematic Layout software and SimulationThere seems to be a "small" problem. LT1243 is a current mode controller. As far as I understand, there's no way to generate pwm output without using...10 replies | 426 view(s)
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9th December 2019, 22:28You need the complete pass- and stop band specification to determine the filter effort, e.g. minimal order.7 replies | 329 view(s)
About FvM
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