1. A

    FT232RL Chip is not working (USB to TTL)

    First of all this is an urgent question my project's deadline is coming closer. Please help me I used FT232RL chip to make USB to TTL converter. I did this connection below. I can make serial communication but I cannot receive any message. I can also send message and TX Led is lightining up.
  2. A

    How to get correct graph in this Pspice circuit when simulate it ?

    Hi I am studying a dc dc converter model. My friend drew this circuit and got this graphic. I added his circuit and graph . But I draw same model , same numbers for resistors capacitors v pulse source ,inductor, diode but my graph is very different. Actually my V pulse source looks like doesn't...
  3. Swaysceptile

    How do I combine these two electronic circuits into one schematic (for project)?

    I started the basics of PCB and doing schematics around 6 weeks ago in my Computer Engineering Drafting and Design class. We used EasyEDA online tool to create the SCH and PCB for our assignments/activities. Our project now is to combine the circuits that we have made before into one system so...
  4. Swaysceptile

    How do I combine these circuits?

    We have a project coming up in my Engineering Drafting and Design class and I don't have much idea yet on how to accomplish it. We are tasked to combine different circuits to design one complete device. Then we need to of course make the Schematic (and simulate it), as well as creating the PCB...
  5. Swaysceptile

    ExpressSCH Netlist Error Regarding NetNames

    Hi, I am having a hard time figuring out how to fix this warning. It says that that symbol '0v' is connected to a net with two different NetNames. It refers to the other symbol located on the upper right which is 'Vpp'. It tells me that I need to change the name or remove the symbol at all. I...
  6. K

    How does this four-pin reset switch work?

    Hello, I am studying a schematic, and am not sure how this reset switch is supposed to work: I cannot find any other switch that uses this symbol, and it just looks like all of the pins are shorted to ground. I don't understand why/how this switch works on the actual board. Is anyone able to...
  7. ZDelta47

    Can anyone help me identify what this symbol is? Still getting familiar with reading schematics.

    I was looking at a schematic and came across this symbol. I couldn't understand what it was or what it's being used for. I tried googling what I could. I found that G is generally used for generators and power supplies. I looked up symbols and didn't find anything close enough. Maybe this is old?
  8. Hunteru

    Anyone has any idea what this means?

    Hi everybody, Anyone has any idea of what this means ? Here's the complete schematics: It's a line amplifier, and it could be a linear Pot of Fader... I don't know. Thank you
  9. R

    Arduino guitar pedal help

    Hi! I've been working on a school project, that is a guitar pedal (effects) using an arduino board. I've been using the EasyEDA site for designing the schematic. I would like to ask a more skilled/experienced person to go over my design and look for any flaws or mistakes. Any tips about it...
  10. jcarlson023

    DC Switching linear regular design question

    Hello, I am fairly new to electronics design (I have a mech e background), and am designing a board that requires dropping 12v to 5v with a large current requirement (up to 8A@5V). In a bid to save on BOM, I took a shot at creating my own design vs buying one off the shelf, using the...
  11. I

    T.I. BLE USB MCU Programming Trouble (CC2540)

    Hello Everybody! I am trying to program/communicate with the CC2450 BLE IC, which is a transceiver/microcontroller. My computer is having trouble recognizing the device. It does not show up in Device Manager. I've tried the T.I. tools for trying to communicate with it. I've downloaded the BLE...
  12. TheNutt

    Can I add 120V lines to the schematic as shown without frying anything?

    This is an electrical question, but I want to explain the application first: I have an LED fireplace that I'm putting in to replace a wall heater. I wired it to run through the wall thermostat, but when the thermostat turns the fireplace on it just turns on the lights, then you have to manually...
  13. E

    Communication failure using PCA9615 Differential I2C Bus Extender

    I have used PCA9615 differential I2C bus driver in one design to extend the I2C bus over CAT5 cable. (datasheet https://www.nxp.com/docs/en/data-sheet/PCA9615.pdf) The design has been done according to the datasheet recommendation and with the help of a reference design of a popular open-source...
  14. A

    Identification of components in old radio

    Hi. I have recently gotten my hands on what I think is a very old radio: I am interested in how this device works. Inside the case is, among other things, a black cylinder containing some circuitry and on its side is a schematic: I have tried making a hand drawn copy: I am having a hard time...
  15. 8

    MAX8815 DC to DC step up converter circuit

    Hey, I have a question regarding a schematic I made, which doesn't work. Maybe someone could help me out. I tried to make a board which would take a 1.5V Battery and turn it into 5V. I used this IC: https://www.mouser.de/datasheet/2/256/MAX8815A-1516131.pdf I oriented myself with the schematic...
  16. Rossosaurus

    Need a hand understanding a section on datasheet example schematic (CYPD3177 USB-C Controller)

    Hi all. I'm currently designing a circuit using a CYPD3177 USB Type C Controller to change the output voltage of a USB C power supply with power delivery support. I was looking at the example schematic in the datasheet to understand how the chip is used but I'm struggling to get my head around...
  17. Luiz Fernando Vieira

    CADENCE is disabling functions alone

    Hello everyone, I am contracting problems, in CADENCE for some modification I do not know bug the same. I am it locks or closes alone, when I return the functions are disabled, the worst I have to do all over again, nor can I simulate again, see the images for better understanding. 1-the arrow...
  18. Analog Ground

    How were "Outside Foil" connections on vintage foil capacitors documented?

    In another thread, I learned about the "Outside Foil" designation on one lead of some vintage foil capacitors. How was this connection specified on schematics or other documentation? Here is an example of the indication.
  19. Crazy_BJT

    Troubleshooting/repair Hameg 1500 scope

    Hi there to you all, I need some help with a troubleshooting/ repair. I have an analog/digital oscilloscope Hameg HM1500, it has some RTC problem, it presents a partial sweep. I think is the horizontal circuit, that's either missing a voltage or there is some faulty component. The only problem...
  20. G

    CRS Robot & C500C Wiring

    Hi all, I need a little help interpreting this schematic and doing some wiring for the System Input/Output plug that connects to the rear of the C500C CRS Robot Controller. My goal is to get the plug hooked up to an Opto22 R1 Controller. I'm guessing I'll have to use SNAP-ODC5 modules. If I...