BradtheRad
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Yesterday, 16:52IDEA ON THE POST: Different transformer output voltage can be used in the design and the variable resistor be used to fine turn the required voltage....11 replies | 2531 view(s) -
Yesterday, 06:36Sorry, I know nothing about this. HSpice ought to have a help number, if it's that prominent. Surface thinking might lead you to tell the boss...13 replies | 2239 view(s)
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30th May 2020, 20:24BradtheRad replied to a thread Circuit don't work in Microcap (555-based class-D) in Hobby Circuits and Small Projects ProblemsSimpler yet. Start with an ordinary relaxation oscillator built from a single op amp. (Normal output is AC square wave.) Turn it into a class D...7 replies | 546 view(s)
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30th May 2020, 08:04Embarrassing for someone but remember you are not the one responsible. About computer programs there's a saying: 'If it's difficult to use it's...13 replies | 2239 view(s)
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30th May 2020, 07:08BradtheRad replied to a thread How "repair" voltmeter gauge? in Service Manuals, Requests, Repair TipsArrange the zener diode in series so it subtracts about 7.2 volts from the supply. This creates an expanded scale meter. Apply 8V, needle deflects a...7 replies | 338 view(s)
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29th May 2020, 04:40Although I lack hands-on experience with HSpice, I get the idea that software developers like to change things around from one version to the next....13 replies | 2239 view(s)
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29th May 2020, 04:23BradtheRad replied to a thread cooler master silent prp 500w pc psu in Service Manuals, Requests, Repair TipsFrom internet search your unit appears to be a combination power inverter & battery charger, correct? Since you have 330 vdc, what is your power...3 replies | 188 view(s)
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28th May 2020, 11:30For further assistance it may require someone familiar with your setup and your simulator. Example, 'Unknown file error' may have to do with the way...13 replies | 2239 view(s)
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27th May 2020, 10:29BradtheRad replied to a thread looking for a local supply in southern california in Power ElectronicsI've purchased power adapters from discount mail-order suppliers such as All Electronics. Some as low as 99 cents (decades ago). Assorted brands....6 replies | 299 view(s)
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27th May 2020, 10:18BradtheRad replied to a thread Circuit don't work in Microcap (555-based class-D) in Hobby Circuits and Small Projects ProblemsThe principle is to vary duty cycle of pulses (PWM) depending on voltage of input signal. Here is a class D amplifier, starting with a triangle...7 replies | 546 view(s)
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26th May 2020, 09:17BradtheRad replied to a thread Transformer coupled Class A amplifier in Elementary Electronic QuestionsDoes your single-ended amplifier have a capacitor somewhere in the output stage? If combined with an inductor (or transformer), then it's possible...7 replies | 373 view(s)
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26th May 2020, 09:07BradtheRad replied to a thread Opinions about plagiarized paper on an academic website in Miscellaneous EngineeringMany of these 'free' websites are suspect as carriers of malware. Not to say it necessarily applies here, but the attraction does provide a means for...9 replies | 658 view(s)
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26th May 2020, 02:22BradtheRad replied to a thread Opinions about plagiarized paper on an academic website in Miscellaneous EngineeringYou're correct on the face of it. However it would take more research to get the entire story. * Example, to find out whether the original author...9 replies | 658 view(s)
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25th May 2020, 21:57BradtheRad replied to a thread Stuck at simulations of Amplifier in LTSpice in Analog Integrated Circuit (IC) Design, Layout and FabricationI guess you're aware gain comes from a transistor? What amount of gain do you have now? What did you do to get that amount?4 replies | 250 view(s)
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25th May 2020, 21:31BradtheRad replied to a thread Transformer coupled Class A amplifier in Elementary Electronic QuestionsWhen you turn on the transistor fully, it provides a low-resistance path to a supply rail, causing that supply rail to influence the output. When...7 replies | 373 view(s)
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25th May 2020, 21:24Once upon a time every town had a TV repair shop. Technicians worked on tv's all day long. They were close to the screen, and close to the tubes. ...6 replies | 439 view(s)
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25th May 2020, 01:42BradtheRad replied to a thread Doing electronics on an office carpet (non ESD) in Elementary Electronic QuestionsAlthough he's not following the safest procedure... Sooner or later any electronic device is liable to static charge exposure, when you think about...10 replies | 485 view(s)
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24th May 2020, 23:19BradtheRad replied to a thread Infection Simulator reading file problem cpp in PC Programming and InterfacingThe code does a similar job as a 'robust' input routine. The purpose is to accept user keypresses, then convert ascii characters into proper data...5 replies | 451 view(s)
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24th May 2020, 04:25BradtheRad replied to a thread Infection Simulator reading file problem cpp in PC Programming and InterfacingPerhaps you mean you want to parse long strings of alphanumerics? Then you must examine each character in sequence. Begin each datum as a null...5 replies | 451 view(s)
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23rd May 2020, 06:54Is the load a capacitor by itself? That can give a simulator trouble. Try changing the load to a resistor. Compare the simulator results. See if...13 replies | 2239 view(s)
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23rd May 2020, 06:02BradtheRad replied to a thread Covergance Problem in Transient Bias Point Calculation in PCB Routing Schematic Layout software and Simulation10.00 GA indicates giga-Amps, correct? That's a very large value. Try putting resistors in series with capacitors. Your schematic has the power...4 replies | 377 view(s)
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23rd May 2020, 05:31BradtheRad replied to a thread Infection Simulator reading file problem cpp in PC Programming and InterfacingCreate arrays: entity(x) data_string(x) Whether_infected(x) Where x = 1 to amount of entities.5 replies | 451 view(s)
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22nd May 2020, 23:14BradtheRad replied to a thread Circuit don't work in Microcap (555-based class-D) in Hobby Circuits and Small Projects ProblemsRun a 555 timer IC to generate a pulse train. Apply varying voltage to pin 5. This alters duty cycle. It's the makings of a class D amplifier. ...7 replies | 546 view(s)
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21st May 2020, 04:33BradtheRad replied to a thread Determining Value of Capacitor Between PV Panel and DC-DC Convertor. in Power ElectronicsJust to pull a figure out of a hat. I don't know whether 10V 0.5A is a realistic MPPT. Of course the converter must be designed to operate on...7 replies | 562 view(s)
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21st May 2020, 03:53BradtheRad replied to a thread Determining Value of Capacitor Between PV Panel and DC-DC Convertor. in Power ElectronicsAlthough a capacitor helps to smooth input current, consider making a complete LC filter. Say the most you can extract from your PV panel (at MPPT)...7 replies | 562 view(s)
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21st May 2020, 02:39BradtheRad replied to a thread How to adapt (normally) PCI Express x1 to work in PCIe Mini Slot in PCB Routing Schematic Layout software and SimulationReally positive news. Huge change from your previous (erased) post, huh? That's how it is with these newfangled computerized devices... They act in...7 replies | 2128 view(s)
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21st May 2020, 00:26BradtheRad replied to a thread Dont need a super accurate, super high bandwidth In Amp... in Analog Circuit DesignA simple differential detector is a Wheatstone bridge. Anti-parallel led's act as visual indicators. In some cases you don't need the ground...6 replies | 394 view(s)
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