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Hi i think you could use the serial port to acomplish that task. You can configure the serial port baud rate to have 115200 bps, and if you plan to send blocks of 8 bits then you would have plenty of time, but it will depend of course in the other part of the logic. Sometimes the conversion...
Hi my friend... First of all, i would change the microcontroller your using and replace it with PIC16F628, because this one has the integrated peripheral, Universal Synchronous/Asynchronous Receiver/Transmitter USART/SCI and yours don't seem to have this. They are not expensive, actually both of...
Hi jk9, i have a suggestion for you. First of all, you said that you know the voltages Vcb and the input voltage, as well as the input current ok? So, you know the impedance of the whole branch, between the input and Vcb. You can also determine the impedance Ci, it is a given value and you know...
is this a theoretical problem or a pratical one? You can try to put this in Laplace domain and minimize the circuit in 2 blocks.
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You have mentioned that you know the frequency, so with some algebra you can find the voltage drop in Ri. You can also vary the frequency and see, for instance, how...
I think the best anti-virus software is the one sold by ESET. Unfortunately it not free, but the price for the complete suite which include firewall and the anti-virus with 3 licenses, the last time i paid was R$ 120,00 ( Brazilian currency ). I consider it a fair price. Their firewall solution...
nte864 function generator schematic
If you have familiarity with any microcontroller, there is another way you could do the waveform generator, relatively simple. First of all, all kind of microcontrollers have PWM outputs. So it is easy to generate square waves. If you put a second order low...
pic bootloader oscillator initial
If you are doing a commercial product and don´t want to leave an icsp header externally to allow users to upgrade firmware through an icsp programmer, you could use bootloader programming, so you could put a serial RS232 conector or serial USB, available, it is...
If you use low voltage programming mode, you have to pulldown the PGM pin, in your target system, otherwise it will enter in programming mode and the configuration word might be corrupted. Moreover the LVP bit could be cleared and then, only high voltage programming mode will program your pic...
You have to check also the other bits in cofiguration word. If this PIC have WDT,for instance, what about the WDT? if it was not disabled your program must have a clear watchdog inside your program to prevent reset from watch dog, also verify if the correct setting of the oscillator bits are set.
Re: Lock in Amplifier
Actually, i have to do some kind of lockin amplifier, but it´s not my priority right now... when i finished the prototype, i wil share with you, it´s not so diffcult as it seems, if you know a bit of modulation you can do it yourself. ( at least is what i think, i don´t...
Re: Lock in Amplifier
Hi theflyingmachine,
A lock-in amplifier is a device that amplifies a small signal, using modulation techniques. your signal must be pulsed (AC). Simplifying a lot, you could think as if you multiply your detected signal + noise with a reference and then filter the...
If you like to program pics, there is one that has been suited to smps. it´s the DSPIC30f2020, if i am not mistake. it has a PWM max period of about 1ns.
i am trying to do one SMPS, based on a simple one like 16F628A, just to test some parameters, but if you have te constraint of having 3...
thanks for the anserws, i didn´t know that the version i use which is 6.9 had a bug with pic16.dll. i have wasted so much time, thanks for the tip, i am not a registered user but i will look for it in the net.
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