BradtheRad
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Yesterday, 04:10BradtheRad replied to a thread My 12V DC Vending Machine motor rotates 1 extra 360 degree rotation sometimes. in Analog Circuit DesignYour Google.drive links do not play a video. Instead they require permission which I was unable to obtain.2 replies | 127 view(s) -
19th September 2019, 08:16Katheru replied to a thread How good is ultiboard? in PCB Routing Schematic Layout software and SimulationUltiboard is printed circuit board design and layout software that integrates seamlessly with Multisim to accelerate PCB prototype development. ...3 replies | 145 view(s)
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19th September 2019, 07:40Katheru replied to a thread How to Design Vias in PCB Layout? in PCB Routing Schematic Layout software and SimulationIn terms of design, vias consist of two parts: drill hole and pad. The size of these two parts determines the size of vias. In high-speed and...3 replies | 232 view(s)
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19th September 2019, 06:14BradtheRad replied to a thread Single conductor inside hollow conductor in Elementary Electronic QuestionsTo pull wire through a tube, first use a vacuum cleaner to s-u-c-k a string through the tube. (It works quickly whether the tube is coiled or...36 replies | 1952 view(s)
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19th September 2019, 05:49Your schematic appears to be in a textbook. Does it have a step-by-step tutorial? Starting with the laser diode and its specs. Then adding the...3 replies | 164 view(s)
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18th September 2019, 06:08BradtheRad replied to a thread Operational amplifier driving capability test in Analog Integrated Circuit (IC) Design, Layout and FabricationI attached a 1k resistor load on a 741 op amp. Specs say max output current is 10-25 mA. I was surprised to see output voltage drop 5 percent....11 replies | 243 view(s)
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18th September 2019, 02:54BradtheRad replied to a thread In-ear speaker transducers for hearing aids... in Elementary Electronic QuestionsI've disassembled ancient white plastic earphones (the kind we plugged into tinny transistor radios in the 1960's). It's a coil of wire beside a thin...5 replies | 267 view(s)
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17th September 2019, 08:21BradtheRad replied to a thread Level Shifters: Trends in Delay and Transition Time in Analog Integrated Circuit (IC) Design, Layout and FabricationIn all probability you apply the higher voltage through one device, and the lesser voltage through a different device. This occurs internally in an...1 replies | 162 view(s)
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17th September 2019, 02:38BradtheRad replied to a thread Extracting energy from gyroscope precession in Mathematics and PhysicsThis jogs my memory about a mystifying physics demonstration. Sit on a free-turning chair, feet off the floor. Start a bicycle wheel spinning with...44 replies | 1157 view(s)
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15th September 2019, 20:18BradtheRad replied to a thread What is the conditions for complementary BJTs in Analog Circuit DesignGain and power rating are probably chief parameters to match, especially if you wish to push your amplifier to its maximum performance. Also the...3 replies | 228 view(s)
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15th September 2019, 05:12BradtheRad replied to a thread li-ion voltage reducer to 3volt - help needed in Hobby Circuits and Small Projects ProblemsMy wireless mouse takes 3V @ 10mA. I made a battery pack from 2 half-used D cells. 2.5V is sufficient to operate the mouse. If your setup is...7 replies | 429 view(s)
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14th September 2019, 20:03BradtheRad replied to a thread PS with LM76003 for variable volatage and variable current design? in Analog Circuit DesignWhen you draw high power your output capacitors have to carry 1 or 2 Amperes per cycle. That's thousands of times per second. It may be all right to...2 replies | 242 view(s)
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14th September 2019, 03:05BradtheRad replied to a thread How to calculate bandwidth for this circuit, including lower and higher cut off freq in RF, Microwave, Antennas and OpticsYes, there are schematics on the internet which resemble your circuits. My observations are general since I'm not familiar with their operation. ...5 replies | 496 view(s)
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13th September 2019, 23:52BradtheRad replied to a thread FYP ideas suggestion on FPGA, or FPGA based network processing/network on chip in PLD, SPLD, GAL, CPLD, FPGA DesignI guess this is asking for ideas about a Final Year Project title? Try a forum search on your words of interest. Also click on related threads...5 replies | 272 view(s)
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13th September 2019, 09:54vivekroy replied to a thread How to calculate bandwidth for this circuit, including lower and higher cut off freq in RF, Microwave, Antennas and OpticsBut doesn't this look like a stacked power amplifier? Do we need to care about open loop stability of a power amplifier? If we can get rid of the...5 replies | 496 view(s)
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13th September 2019, 09:49Use the delay function to plot the delay between the two wave-forms and then do a Y vs Y plot. Alternatively you can save both your...15 replies | 553 view(s)
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13th September 2019, 06:54BradtheRad replied to a thread How to calculate bandwidth for this circuit, including lower and higher cut off freq in RF, Microwave, Antennas and OpticsYour schematics have a number of LC loops, and capacitors which can be switched in and out of the network. It looks as though components are able to...5 replies | 496 view(s)
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13th September 2019, 06:29A lot depends on the travel distance of the pointer. By mounting a tiny strong magnet on it, its position may be detected by a hall sensor. To get...3 replies | 268 view(s)
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12th September 2019, 19:51vivekroy replied to a thread Verilog-a code to latch analog voltages in Analog Integrated Circuit (IC) Design, Layout and FabricationHere you go // VerilogA code `include "constants.vams" `include "disciplines.vams" module veriloga_latch(vin,vclk,vout_sampled); input...7 replies | 319 view(s)
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12th September 2019, 14:01vivekroy replied to a thread Verilog-a code to latch analog voltages in Analog Integrated Circuit (IC) Design, Layout and FabricationLook at page 113 of http://www.lumerink.com/docs/VerilogA.pdf Your exact solution is given!!7 replies | 319 view(s)
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12th September 2019, 13:47Connect a capacitor to your charge pump output. Make sure its large enough so that when the CP turn on, the voltage does not change too much. ...15 replies | 553 view(s)
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11th September 2019, 20:13vivekroy replied to a thread In PA, if the bias is VDD then how can swing be 2*VDD with inductive load in RF, Microwave, Antennas and OpticsYou have the explanation there. If you want more insight into such behavior, refer to "Pulse, Digital and Switching Waveform" by Millman and Taub.2 replies | 234 view(s)
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11th September 2019, 01:21Your schematic has at least one inductor in the current path. An inductor tends to generate current during dead time. It could affect V-versus-A...3 replies | 214 view(s)
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10th September 2019, 23:33BradtheRad replied to a thread Calculate the load capacitance in oscillators in Elementary Electronic QuestionsEach logic gate has some resistance in its output stage. This means it can provide (source) limited amount of current to the load. Your capacitor...2 replies | 250 view(s)
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10th September 2019, 08:02Hi everyone, ALLPCB will regularly give special offers to express our gratitude for your continuing trust and business. Now we provide a special...0 replies | 174 view(s)
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9th September 2019, 22:13Yes, you can send the upper waveform through a simple RC or LR circuit, as a low-pass filter, to get the circled waveform.6 replies | 353 view(s)
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9th September 2019, 06:09BradtheRad replied to a thread 3 phase 4 wire(480V) AC to 12VDC (100mA) power supply for energy metering application in Power ElectronicsIs your meter portable? Can it run on a 9V battery? Or several rechargeables? Is your meter installed permanently? Can you power it from a wall...9 replies | 448 view(s)
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