BradtheRad
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Today, 05:45BradtheRad replied to a thread Can't get digits other than 'zero' in 4-DIGIT 7-SEGMENT DISPLAY in MicrocontrollersIsn't this what happens when you do a test of all connections? By changing state at a certain pin, and it makes the IC light up everything on the...4 replies | 75 view(s) -
Today, 04:33Consider amplifying your signal by means of a transistor in common-base operation. It provides high gain. This simulation shows the concept. ...8 replies | 220 view(s)
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20th May 2019, 07:13BradtheRad replied to a thread [moved] Power generator on Boeing passenger planes? in Power ElectronicsThe article tells how the 787's designers gave ever more functions to be done by electricity, and it seems to include crucial systems. Perhaps...4 replies | 196 view(s)
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19th May 2019, 22:11BradtheRad replied to a thread [moved] Convergenge issue PSpice- LM5022 in Software Problems, Hints and ReviewsTry increasing your tilmestep by 10x. Run the simulation again. If it makes you wait a long time then increase it further. A reasonable timestep...14 replies | 418 view(s)
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19th May 2019, 01:13BradtheRad replied to a thread Design and construction of scintillometer for evapotranspiration in MicrocontrollersThe Ebay listing is a spectrometer. It's not likely you can aim it at the dirt and read moisture content. Not that I know anything but on a...20 replies | 2243 view(s)
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18th May 2019, 22:21BradtheRad replied to a thread Re. PADS pcb won't open (after mains power returned) in Software Problems, Hints and Reviews* Is your file corrupted on disk? See if you can duplicate it, or move it, or rename it. An error suggests it is no longer usable. If you can...1 replies | 118 view(s)
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18th May 2019, 19:02This method is not precisely the same as the thread topic but it has the same result. And it needs no op amp. Villard voltage doubler. Accepts AC...15 replies | 1465 view(s)
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18th May 2019, 18:28BradtheRad replied to a thread [moved] Convergenge issue PSpice- LM5022 in Software Problems, Hints and ReviewsDoes it work (or does it break) if exposed to negative polarity? What happens when the AC supply goes into negative region?14 replies | 418 view(s)
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17th May 2019, 22:48BradtheRad replied to a thread [moved] Convergenge issue PSpice- LM5022 in Software Problems, Hints and ReviewsWhat is supposed to be the power supply for the control IC? Your power supply icon appears to be AC. Instead it is normal to supply DC to a boost...14 replies | 418 view(s)
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17th May 2019, 02:23BradtheRad replied to a thread [CST-MWS] How to get data-points for 2D geometry? in RF, Microwave, Antennas and OpticsTo send only the outline: 1) Send a code which designates row 1. 2) Starting from the left, send column position of each pixel which is turned...4 replies | 193 view(s)
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16th May 2019, 23:28BradtheRad replied to a thread [moved] Convergenge issue PSpice- LM5022 in Software Problems, Hints and Reviews* C4 can be removed. Or else put a low-ohm resistor inline with it. By itself it's charged immediately by the power supply. In real life it's okay to...14 replies | 418 view(s)
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16th May 2019, 11:33BradtheRad replied to a thread Fully differential continuous time integrator in Analog Circuit DesignDoes this setup resemble yours? PWM is fed to a DCR integrator, so it is smoothed to a volt level in the range 0 to 5v. Duty cycle ranges from...2 replies | 490 view(s)
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16th May 2019, 07:12BradtheRad replied to a thread Phase and frequency locking multiple (9 units) LLC drivers that are each 10cm apart in Power ElectronicsIt sounds as though you're trying to impose one resonant frequency where your various converters have different resonant frequencies. I wonder if...15 replies | 422 view(s)
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16th May 2019, 05:25BradtheRad replied to a thread shape sensor can be used with a prosthetic hand in Robotics and Automation ForumI picture a grid of switches, packed densely so that at least one switch is pressed by a corner of a square when the hand squeezes it. * Therefore...2 replies | 551 view(s)
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16th May 2019, 04:52BradtheRad replied to a thread Negative voltage needed in K-band in RF, Microwave, Antennas and OpticsMethod to derive a negative supply from positive pulses. The oscillator is made from 2 invert-gates (powered by a default 5V supply although of...3 replies | 1085 view(s)
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15th May 2019, 00:39A cold filament is exposed to extreme surge current by direct hookup to mains. On the other hand a transformer self-limits current output, because...19 replies | 586 view(s)
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14th May 2019, 23:55BradtheRad replied to a thread Design and construction of scintillometer for evapotranspiration in MicrocontrollersSee if moisture changes the soil in some measurable way, such as: * electrical conductivity (DC or AC various frequencies) * acoustic or...20 replies | 2243 view(s)
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14th May 2019, 03:55Expect the die's tiny teeth to break on tungsten carbide. You might manage to cut a thread on a lathe with diamond-tipped tool. Set the carriage...20 replies | 5989 view(s)
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13th May 2019, 08:08BradtheRad replied to a thread how to design a thermostat without Microcontroller? in Analog Circuit DesignThe feedback resistor is usually a much higher value than the input resistor. Try substituting a potentiometer for the two resistors. The values...64 replies | 2278 view(s)
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13th May 2019, 07:37It's an unusual request for unusual times. It may become a more frequent request, the way the world is getting. A detector ought to be located close...5 replies | 1504 view(s)
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13th May 2019, 00:20BradtheRad replied to a thread Li-Po Single Cell Charger - USB-C Power Delivery in Power ElectronicsIn regard to modern USB protocols I believe your knowledge is greater than mine. I understand a USB port provides 130 mA by default, until the...3 replies | 910 view(s)
About BradtheRad
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