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I would use a screened cable for the encoder output. Make sure that the supply feed at the encoder end is decoupled with an extra capacitor from +Vcc to earth. Long wires act like aerials and pick up noise from machines and flourescent lights, best to keep the noise out of your signal wires. At this low frequency there should be no (...)
You want to draw a keep-out polygon on the respective component (top) layer.
Hi, Depends on how much info you want to keep. A very simple way would be every time you send a byte of data out somewhere, be it I2C or Usart etc, then instruct it to increment a counter for that type of operation. You could display the info on a lcd for instant feedback USART out 234 I2C out 101 I2C (...)
I've used the F120 for this purpose. I wrote the values out using the uart (RS-232) to Hyperterminal running on a PC. You only have to use two wires Tx and Rx and ground to the PCs serial port. If its new it might not have a serial so use a USB to serial cable. Use a high baud rate and keep the message very short else you will slow down your code.
First of all, you're going to need more than just a one-shot; you will also need some kind of latch to disable the one-shot after it's been triggered once. Also keep in mind that the HC4538 is, by definition, a RETRIGGERABLE one-shot. This means that if a subsequent trigger occurs before the time-out period expires, the time-out period (...)
but keep in mind that the filter is designed for cut off frequency equal to 50 Hz
Really? Nothing at all? After looking around I did find one interesting relevant paper. They drive 4pF with rise/fall times of ~100ps, so 40mA out peak. Here's a shot of the circuit they use: obrazk
I did some digging and found this: they have a lot of power supplies and specs on each of them, useful for figuring out what I need for my projects and designs I believe they have cad specs too somewhere, I'll keep digging. What you exactly need and what you wan
To give a bulb a long life when its "flashed" on and off, they are operated at black heat, that is to say they have 70% of the working voltage put on them to keep the filaments hot(tish). I would suggest that you work out the circuit to see how this is done. It could be a resistor across the back of the switch. if you remove the resistor you may f
nice work .. congrats and keep going :)
You should be able to inspect the netlist and see what model is called out, and inspect the setup model libraries to see where the models are pulled from. If you change the bottom-level file and don't do anything to make the ADE think there's a reason to netlist, you may just keep running the old netlist and not repeat the model readin / evaluatio
There is fringing capacitance where the lead in/lead out line attaches to the via. The via itself is somewhat inductive. So you end up with a lumped element model of a shunt C - series L - shunt C. For lower frequencies (<10 Ghz) the capacitance and inductance is such that at least 2 ground vias are needed to keep the insertion loss low. Up a
You are changing the width (the duration) of the pulse on-time. Let's say you have a signal with frequency of 50Hz, upon which you will carry out PWM. Then time period is 20ms. If you provide power to the motor for 15ms and keep power off for 5ms, you are controlling the power to the motor and restricting it to (15/20)*100% = 75%. The longer the pu
Hi; There is no DACs on pic16 series as i know. But as Tahmid said, you can use PWM block. It is 10bit resolution (should be enough to generate precise analog voltages). You can filter out PWM output with an RC filter. keep PWM freq high enough (ie around 20/40 Khz) to able to filter with small RC values. Sample codes and hints are available (...)
First, rectify the single phase AC to DC. Then, use a 3-phase bridge rectifier to convert the DC to 3-phase AC. Use a microcontroller to generate the SPWM signals. Generate the signals 120' out of phase. You can use a dsPIC30 or dsPIC33 motor control microcontroller to generate the SPWM signals. Use feedback to keep the output voltage (...)
hello i wana ask abut pic how do you test you pic if its warking or not? what do break your pic? how to keep it sefa? can you ues it with out hax or progmming? thank you
Why is DC Bus Over-voltages alarm keep on coming ? A motor is running left & right in both directions one by one by a VFD , when the motor complete its right direction travel then it gets the command to travel to left direction, when it starts to its left travel or in the midway through to the left travel it gives the DC Bus Over voltage alarm
Hi, I keep missing some small rats nest pieces, do you know how i can make the unrouted lines stand out much more?
I would guess the inductor stops unwanted modes of oscillation from happening, like if it was a 3rd order crystal the L-C keeps if from oscillating at the 1st order frequency. The 0.01 uF is just a DC block to keep the Xtal IN from shorting out to ground. 22 pF in parallel with 470 nH implies the desired frequency of oscillation is (...)
I think the size is not a big problem but it may be a big challenge to keep both transmitter and receiver in low power consuming. There are 2 schemes from google: 1. Based on wirelss remote control(such as used in a RC car toy): The transmitter sends out a coded FSK/ASK signal when buttons pressed. The receiver continuously receives signals on air