BradtheRad
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Today, 10:26One possibility is a voltage multiplier, made from an array of diodes and capacitors. To get 12V your supply can be three 1.2V cells in series (since...4 replies | 103 view(s) -
Yesterday, 09:53BradtheRad replied to a thread hello i'm a new member i want question mechanism to operate the blender in Mechanical Engineering and DesignThanx and I agree sometimes we don't know what road a vague question will lead us down. Funny that way.3 replies | 96 view(s)
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Yesterday, 07:35BradtheRad replied to a thread My 12V DC Vending Machine motor rotates 1 extra 360 degree rotation sometimes. in Analog Circuit Design* Does your motor draw so much current that it causes the supply voltage to droop? * Does you motor create noise (glitches) on the supply rails? ...13 replies | 348 view(s)
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Yesterday, 06:43BradtheRad replied to a thread hello i'm a new member i want question mechanism to operate the blender in Mechanical Engineering and DesignIt's hard to be certain how to answer your question. The blenders I've seen contain a motor which is turned on and off by a switch. It's plugged into...3 replies | 96 view(s)
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Yesterday, 06:32BradtheRad replied to a thread My 12V DC Vending Machine motor rotates 1 extra 360 degree rotation sometimes. in Analog Circuit DesignYour videos are visible now. Your mechanism looks like the sort of thing that might have a cam or gear with a notch in it. If it doesn't stop...13 replies | 348 view(s)
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Yesterday, 04:26BradtheRad replied to a thread USB PD Lab Power Supply, flyback- vs forward-converter, pro's vs con's? in Power ElectronicsWeigh the risk if you attach homebrew circuits to your computer's USB port. You could ruin it. Switched-coil supplies are the type that ought to have...2 replies | 146 view(s)
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22nd September 2019, 22:23David_ started a thread USB PD Lab Power Supply, flyback- vs forward-converter, pro's vs con's? in Power ElectronicsHello. I have what I think is a pretty neat idea, the latest laptop I bought feature a USB Type-C port which supports USB Power Delivery(USB...2 replies | 146 view(s)
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22nd September 2019, 06:07BradtheRad replied to a thread Portable headphone amp w. batteries in Hobby Circuits and Small Projects ProblemsExample, how a 555 IC can be made into a simple class D amplifier. The 555 is configured as a pulse generator. Audio is fed to the 'CTL' pin,...14 replies | 411 view(s)
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21st September 2019, 19:59BradtheRad replied to a thread CRO measurements whether to ground or not and when to ground in Elementary Electronic QuestionsThe scope doesn't absolutely need a soil connection. Nor your DUT. In fact a good thing to install is an isolation transformer. It insulates the...1 replies | 132 view(s)
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21st September 2019, 09:01BradtheRad replied to a thread Phase Difference calculation in cadence. in RF, Microwave, Antennas and OpticsFor waveforms A & B, create a zero-crossing detector (of upward-going transition). 1) Test begins when waveform A crosses zero. Set timepoint=0....3 replies | 176 view(s)
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21st September 2019, 08:02Transistors were featured in project books during the 1950's to the 1970's. (After the vacuum tube era and prior to the IC era.) Toss in magazine...5 replies | 261 view(s)
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21st September 2019, 04:36Does the Proteus installation include a library of sample circuits? Did you find an example file of the type of smps you wish to build? It...1 replies | 143 view(s)
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20th September 2019, 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.13 replies | 348 view(s)
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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 | 245 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 | 266 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...39 replies | 2112 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...5 replies | 261 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 | 344 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 | 325 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 | 186 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...59 replies | 1710 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 | 256 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 | 507 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 | 271 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 | 545 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 | 305 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 | 545 view(s)
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