BradtheRad
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Today, 04:54A paddle in liquid is a simple way to load a motor. You alter it with ease, by immersing less or more of the paddle. Or by using liquids with less or...4 replies | 272 view(s) -
Yesterday, 08:47BradtheRad replied to a thread Microwave signal transmission: shortest path or shortest time? in Digital Signal ProcessingIt seems more likely that brain tissue absorbs microwaves rather than reflect them back toward the source. However perhaps bone tissue might reflect...1 replies | 135 view(s)
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Yesterday, 07:47BradtheRad replied to a thread Voltage sense using summing amplifier in Elementary Electronic QuestionsYou don't say it's mandatory to use the math oriented analytical approach... but one trick you can try is to substitute a potentiometer for Rf1 &...4 replies | 131 view(s)
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27th February 2020, 12:34BradtheRad replied to a thread Overloaded fuse/broken pin issue- PARTS RESOURCE NEEDED in Service Manuals, Requests, Repair Tips* Instruction manual: the section about fuses tells of the importance of setting the machine for 120VAC or 240VAC. * About capacitors, examine...4 replies | 297 view(s)
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27th February 2020, 07:36No doubt capacitance plays a part but in addition our body is an antenna which picks up RF (and/or mains hum). Then in some way, shape, manner or...3 replies | 277 view(s)
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26th February 2020, 06:33BradtheRad replied to a thread Overloaded fuse/broken pin issue- PARTS RESOURCE NEEDED in Service Manuals, Requests, Repair TipsIt seems like it's almost the rule, that people don't get rid rid of working equipment until it develops a problem, then they unload it on someone...4 replies | 297 view(s)
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25th February 2020, 00:10BradtheRad replied to a thread Adding a 3 band equalizer to a phantom powered electret mic amp in Analog Circuit DesignWhen a mic produces 10 or 100mV amplitude it's wise to send it to a pre-amp right away so your desired signal stays dominant over any added noise...11 replies | 377 view(s)
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24th February 2020, 15:23Aren't all the terminals of the MOSFET shorted togetehr?5 replies | 312 view(s)
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24th February 2020, 10:45http://circuits-collection.blogspot.com/2017/12/atmega-based-menu-building-lcd-16x2.html?m=1 Look the above link it may be helpful .2 replies | 505 view(s) -
24th February 2020, 02:30Links to tables of wire gauges showing specs and safe ampere-carrying capacity. There is a difference as to whether the wire is in open air, or...14 replies | 623 view(s)
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23rd February 2020, 05:06BradtheRad replied to a thread Questions of mechanical to electrical energy transfer in Power ElectronicsBicycle mount generator via internet search. Often a headlamp is included (for more money). At left is the contact wheel which spins against the...4 replies | 335 view(s)
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22nd February 2020, 22:21BradtheRad replied to a thread Questions of mechanical to electrical energy transfer in Power ElectronicsThis is similar to two AAA in series. Mine have instructions to charge at 72mA overnight. There are store-bought generators which you mount close...4 replies | 335 view(s)
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22nd February 2020, 21:21Although it's feasible to use smps method to convert mains AC (assuming 230V) to 300 VDC... I can't help but think there's a simpler topology. It...4 replies | 292 view(s)
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22nd February 2020, 12:17To my limited understanding a tuning circuit is usually present. This is true whether you're transmitting or receiving. If transmitting then you want...16 replies | 650 view(s)
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22nd February 2020, 06:01I have silver solder in wire form. It's stronger than normal tin/lead solder. Silver type is useful to fix metal parts where the fix should be done...3 replies | 343 view(s)
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22nd February 2020, 02:43Impedance of 50 ohms is a spec which is associated with voltage and current levels. Suppose the antenna generates a 50 µV signal... Then it implies...16 replies | 650 view(s)
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20th February 2020, 10:38BradtheRad replied to a thread Gas flow meter + Gas pressure meter + Vacuum meter? in Analog Circuit DesignPressure of 1 kPa barely moves the needle on an everyday automotive vacuum gauge. This low pressure might be detected by the depth of liquid a hose...3 replies | 331 view(s)
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20th February 2020, 10:08vivekroy replied to a thread common mode feedback question in Analog Integrated Circuit (IC) Design, Layout and FabricationCommon mode feedback does not solve this. Common mode feedback solves mismatch between ID(M3)+ID(M4) and ID(M0). If there is a mismatch between...8 replies | 462 view(s)
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19th February 2020, 18:50vivekroy replied to a thread Design CMOS transmission gate for digital switch in programmable resistors in Analog Integrated Circuit (IC) Design, Layout and FabricationThere are three regions.. 1. Only pMOS is on. 2. Only nMOS is on 3. Somehwere in between You would want the same resistance in all the three...1 replies | 196 view(s)
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19th February 2020, 08:33It looks as though mains AC comes in at left. And I think it filters power to an appliance at right. I'm reminded of a store-bought 'noise filter'...3 replies | 321 view(s)
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18th February 2020, 03:35BradtheRad replied to a thread Different current measurmen numbers on a FLUKE 289 in Elementary Electronic QuestionsMy meters are the same. Each mA range contains a different shunt resistance. When current level is unknown I start with the highest mA range to...4 replies | 365 view(s)
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18th February 2020, 00:34BradtheRad replied to a thread Laptop RAM upgrade (new RAM doesn't work in RVS slot, but works in STD slot) in General ComputerQuickly after you turn on the computer you should see a notice to press F2 (or F10 or 'delete' or some other key or combination of keys) to enter the...8 replies | 898 view(s)
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17th February 2020, 08:10BradtheRad replied to a thread how to generate 4MHz clock from 2 MHz clock. in PLD, SPLD, GAL, CPLD, FPGA DesignThis simple frequency doubler turns up via internet search. XOR (exclusive-OR) gate turns on at upward and downward transitions. RC values are not...19 replies | 1167 view(s)
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17th February 2020, 02:07I suspect the output ought to have some amount of resistive load on it, to allow charging and discharging in the capacitors.1 replies | 231 view(s)
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17th February 2020, 00:42BradtheRad replied to a thread How to analysis the loading effect of this kind of circuit? in Analog Circuit DesignThe 150 ohm resistance is always in the path between the op amps, thus it is the ohmic portion of the load. As for capacitors, they present zero...5 replies | 327 view(s)
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15th February 2020, 21:22Your timing scheme has 14 steps. Create 7 arrays named SW1(), SW2(), etc. In each array create 14 elements which contain the successive state (0 or...2 replies | 299 view(s)
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15th February 2020, 19:21BradtheRad replied to a thread [SOLVED] Ultra low-power timer to make a power saving circuit in Analog Circuit DesignA store-bought appliance timer could be adapted to suit your purpose. To build your own long-period timing circuit there is the 4060 IC (or its...23 replies | 844 view(s)
About BradtheRad
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- Born 1953. Some college.
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