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Type: Posts; User: andre_teprom

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    [SOLVED]Closed: Re: Ground plane in audio amplifier?

    it is likely being not self oscillation as you think, but rather a bare injection of EMI ( e.g , from mains ) through your fingers.
  2. Closed: Re: Energy doesn't FLOW the way you THINK! (Electrodynamics)

    Each model of representation of a physical phenomen is appropriate to the school level in question. For example, quoting the Poynting vector makes sense only when the student is familiar with the...
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    Closed: Re: Altium Width Rule Issue

    You can consider making rules that are applicable for specific devices only, with the Query Builder feature available either on Schematic or PCB scopes. The `PartDesignator` parameter is one...
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    Closed: Re: Pic32 qei interrupts

    In general interupts are not used with QEI registers, but rather with Timers; we want to take the current position at fixed intervals and then calculate the speed or just check whether certain...
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    Closed: Re: reason for 50 Hz ac current

    Instead,



    There is currently a plethora of equipment which extracts samples from the network mains in order to synchronize their PLLs (e.g UPS, TV, etc...), and therefore however much the...
  6. Closed: EPLAN: How to represent bundled connections of a cable?

    Does anyone have any tips on how to make a visual representation of a cable in a multiline diagram, bunching all the connections within a single line ( such as in Altium with the Bus Entry feature ),...
  7. Closed: Re: RC Filter for Web Based PWM Controller (NodeMCU + ULN2803)

    Although at first sight the motor 210mA lies within the specification of the ULN2803 datasheet - which is 500mA for each transistor - you will notice that there is a graph for the duty cycle which...
  8. Closed: Re: RC Filter for Web Based PWM Controller (NodeMCU + ULN2803)

    With regard to RC filtering, it would actually have some usefulness to reduce the generation of harmonics due to PWM switching on a typical reactive load like a Fan, but that would make sense only if...
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    Closed: Re: Learning psoc technology

    At a glance seems a good choice to start since this development kit is made with the CY8C5888LTI-LP097 microcontroller, which has built in either an A/D and D/A converter along with a considerable...
  10. Closed: Re: Simple free mechanical drawing package?

    From what you said, there is not only one 3D format that you have to work with, and considering that the purpose is only to generate the 2D projections, it could be the case to consider exporting...
  11. Closed: Re: What is the size of terminal connector

    The above snapshot refers to the positioning properties of the component (apparently on schematic viewer), does not get into the component details. To do so, you must edit it in the library editor. ...
  12. Closed: Re: What is the size of terminal connector

    As depicted on datasheet, pin dimensions are 0.5x0.9mm, whereas the recommended hole diameter (in fact not so clear) is 1.1mm.
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    [SOLVED]Closed: Re: RF Detector circuit design

    It is not your first thread on the scope of RF detector and people have been giving you several advices that you should consider instead of refusing them, particularly when you admit to be "not...
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    [SOLVED]Closed: Re: Why is CO2 a green house gas?

    Another point to consider is that due to the complexity of the structure of the chemical compounds present in the atmosphere, from the simplest (atoms) to the most complex (molecules), there are...
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    [SOLVED]Closed: Re: Why is CO2 a green house gas?

    It is just a matter of absorption efficiency of gases along with their concentration in Atmosphere, in fact all gases absorb energy from EM waves, however CO2 in particular, has a maximum absorption...
  16. [SOLVED]Closed: Re: Generation of 4 Phase Shifted clock Signals

    With basic components you will be able to create delays, not properly a phase in the usual sense of this expression in digital electronics. A frequency dependent timming approach should be always...
  17. Closed: Re: Holding button for 2s to trigger 555 timer

    Instead of the standard resistor/button arrangement on the 555 input used on the monostable configuration (resistor on the top, button NO on bottom), try replacing it by a voltage divider with 2...
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    Closed: Re: At45db041b vs at45d041

    Many programmer's tools check the chip device ID and refuse to download the code if the target differs from the part selected, unless you uncheck this option - when available. Even a bare suffix...
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    [SOLVED]Closed: Re: USB to RS232 exactly similar to COM1

    What has not been clear here so far is the purpose of this port in your application, whether only communication or communication + power supply. Some older native COM port-based programmers...
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    Closed: Re: Learning psoc technology

    A long time ago I had the opportunity to work with the Cypress PSoC3 familly core, with one of the top member from CY8C4xxx which had both analog and digital cells, but that was essentially a...
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    Closed: Re: Identify an electronic component

    If you aer not sure about what kind of component it is, so check what devices are surrounding this one to have an insight of its function on the circuit, as for example if it is in series or parallel...
  22. Closed: Re: Modelling UC3842 current mode PWM Controller

    There is available on the web the model of this device in Spice, which at first glance may be a much more reliable approach, which would save you from a lot of time, just to validate your model. If...
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    [SOLVED]Closed: Re: Driving an LCD using ShiftRegister

    How are you debugging, step by step with break points? Anyway, define how did you came to the conclusion that it is not working, just by not seeing expected characters on LCD, or checking each...
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    [SOLVED]Closed: Re: Driving an LCD using ShiftRegister

    It is not clear whether this is not working in simulation environment (once above schematic seems like drawn on ISIS Proteus) or on assembled circuit. If you have the means to debug, why not just to...
  25. [SOLVED]Closed: Re: I have a problem related to Embedded C .

    This may not have been so clear; in the prototype of the delay function you missed the argument 'i' at the line 4 of your code.
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