BradtheRad
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Yesterday, 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...3 replies | 171 view(s) -
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 | 272 view(s)
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24th February 2020, 15:23Aren't all the terminals of the MOSFET shorted togetehr?4 replies | 232 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 | 483 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 | 568 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 | 306 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 | 306 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 | 266 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 | 596 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 | 316 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 | 596 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 | 313 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 | 428 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 | 185 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 | 301 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 | 345 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...6 replies | 712 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 | 1111 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 | 225 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 | 320 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 | 279 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 | 812 view(s)
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15th February 2020, 17:42There is the optoisolator (optocoupler) method for monitoring voltage. Create expanded scale readings by installing a zener diode inline.10 replies | 678 view(s)
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15th February 2020, 07:40BradtheRad replied to a thread Basic 12v Battery VOLTAGE METER, more resolution needed in Elementary Electronic QuestionsCongratulations on getting your project to work. Since you're in bargraph mode there can be 1/2 or 1 watt going through the safety resistor. That is...21 replies | 1731 view(s)
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15th February 2020, 03:06BradtheRad replied to a thread Glow LED on specified counter values 0-500 in 89c52 uC in MicrocontrollersIt looks as though you light led1 every 15 counts starting at 10. Likewise led2 lights every 15 counts starting at 15. This can be done by a...30 replies | 1442 view(s)
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15th February 2020, 02:551) File type .asc needs to be changed to .txt 2) It can then be uploaded with your post 3) Advise readers your file is LTSpice simulation...24 replies | 1098 view(s)
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14th February 2020, 23:47BradtheRad replied to a thread Laptop RAM upgrade (new RAM doesn't work in RVS slot, but works in STD slot) in General ComputerThere are limits of maximum RAM which can be recognized, depending on your hardware and your version of Windows. Sometimes you can change it in the...6 replies | 712 view(s)
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