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https://imgur.com/R0TkCHa
Here is the bottom layout, you can see the gnd connection of the circuit.
I just realized that with npn transistor the situation of the current will be flow through +5V --> R8 -->mcu-->Gnd. That's true right?
https://imgur.com/wPtELAr
What i wanna do with pnp...
Hello again,
Thanks for all the answers and critics, with your help hopefully its going to be much better.
@FVM
What i tried about polygons is instead of making huge tracks, I tried to make 2 different power area with polygons, is that a bad idea? Is this what you mean there will be huge...
Hello,
I'm working on a water heater circuit.
I use PIC10f322 as microcontroller and LM35CH(metal can package) as temperature sensor.
My heating coil pulls around 9A and in the future we might need to use 2 of this coil.
Everything works without any problem till coil starts working. When it...
Yes I'm going to use LM2577 to boost the 5V. I'm going to charge the battery around 100-150ma so I think its going to be enough
Edit: I've found out that, bq2000 can be useful for me. Has anyone tried this ic before?
Hello I want to add a battery charger to my existing design.
Now I have a PIC18F4620 at the design. and it gathers some data from various sensor and sending it to the computer with RF. My system works with 9V NiMH battery and I want to charge it with usb. I need to implement a smart charger...
I've tried 1.5A version of another linear regulator. the result was same, it was heating up.
Do you mean PWM for dc motors?
E-design, i've just saw that on 7805 datasheet, is it going to be work with same effiency if I use switching regulators?
Thank you Tahmid, i will use L4971 and L4972 or L4960 to use heatsink probably.
Do you think they will heat up if I use surface mount L4971 and L4972?
Thank you.
Hello,
I've designed a system that includes 3 small dc motors, pic18f and an optical drive. When i did fist prototype version i was using a lab style power source and I was using 12V, 5V and 3.3V from that source but in last version it has 12V adapter input and i was converting voltage 12V to...
I dont think its possible to see 216Mhz oscillation with my oscilloscope(Discontinued Model 2120A, 2120 20 MHZ SCOPE WITH PROBES - DISCONTINUED - B&K Precision), Im going to buy a new one, can you suggest one around 400$? I'm thinking to buy this one (Amazon.com: Rigol DS1052E 50 MHz Digital...
Yea, you are right i've put wrong inductor value, now i've changed it, i was using .05uH.
I have this inductor (Digi-Key - M8167-ND (Manufacturer - 8230-16-RC)) Can i use this on that circuit?
Hello,
I'm trying to design a transmitter thats going to work around 216Mhz. I have a crystal that's frequency is 72.025Mhz. So according to the this thread (https://www.edaboard.com/threads/137908/)
and this image . If I use 10pf capacitor, my inductor value should be .05uH. Thats true...
Hello,
Its not so good bumping an old thread but this is exactly what I need.
I need to oscillate my crystal around 216Mhz, as i calculated i need to use 10 pf capacitor and .17uH inductor. How can i understand my crystal is oscillating. What should i see on oscilloscope when I check from...
Hello everybody,
I need to design a mobile system, I'm going to use one of this boards,
1st board
2nd board
3rd board
This system will work with batteries and I will use 19" LCD for display.
when I check the Manual of 1st board I saw that its not supporting the 19"LCD with LVDS. So I need...
Thank you very much bigdogguru, now I'm able to program my pic, but there is a problem about serial communication. I'm using ccs c serial port monitor but when i send "Hello world, please" I see "Nenno>World,>"neyse" on the screen, when i try again its changing a little, like "Nello<...
hello,
I want to program my 16f877 with MPlab ICD 3 but i dont know how to connect these devices.
I saw a schematic (**broken link removed**)
As i understand, if I connect my PIC directly like this schematic without any other connection, is it ok to program?
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