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Basically, you read the selected timer on the first rising edge and save its value. Then, again you read the timer on second rising edge and save its value. Difference of the two values will tell you the time elapsed in between (depending on crystal frequency, timer mode and other settings)...
Can anyone please help me with the RF propagation models? I've incorporated the log-normal shadowing and the free-space pathloss. Now, please tell me the way to include the Multipath shadowing into the expression.
Any other ideas are appreciated too..!!
In L293D Output Current is 600 mA Per Channel and Peak Output Current can go to about 1.2 A. So if your Stepper drive is rated for some higher current value than this, then L293D will heat up. To support higher currents, you may need to implement both of your H-Bridges using discrete components...
If you want another Timer other than the hardware one, that usually comes built-in in microcontrollers then you can use software timers- a technique also called bit-banging. In this technique you can just shift your data( stored in any variable) left or right so that it can be escaped out from a...
Yup, kam1787 is absolutely right. 2N3904 transistor has a rated current of about 200mA and an LED draw almost 20mA current (most of them especially Red and Green ones). So you will not be able to connect more than 10 anyway. So i would suggest you to use a 2N2222 general purpose transistor as it...
Use a 2N3904 NPN transistor. Connect a resistor of about 1k resistor value to the base. It will work great. And don't forget to series connect some resistance to each LED you connect. For your 5V supply use a 10k resistor.
Use some transistor like 2N3904 NPN or something like that and switch it ON/OFF by connecting it, via series resistor, to your uController's output pin. Hang as many LEDs as you want on the collector side of NPN. Now,They will get their required currents from the source instead, because...
Re: Sinusoidol PWM-Gating Signal for H-Bridge using a uC
Hey i found a code for SPWM in your blog. Your description was amazing. But when i measured the carrier freq.with a counter timer in proteus, it came out to be about 7.5KHz instead of 16KHz as you have mentioned. Can you point to the...
The thing is, i don't really know from where to take off. I have a notion that i may require a Rx Tx thing to transmit and receive X10 commands. Coupling with mains and other stuff is quite alien for me.
Hello! Can you suggest a technique through which one can generate a Sinusoidal PWM signal using a microcontroller especially PIC series ones. I want to use it as gating signal for my H-bridge- to be used as an inverter.
The crystal oscillator attached is of 10MHz frequency. Also, I'm using Proteus' virtual oscilloscope to get the simulations. I having a feeling that getting exactly double the time has some sort of simple but hidden thing going own.
It's like capacitor charging up. The capacitance between gate and source ( as you may have known that this junction is insulated), starts charging up through the resistor Rgs that you may have attached to maintain Vgs (a zener is usually attached parallel to it too). The time constant of...
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