Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Register Log in
  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

help

  1. L

    Crunch 3500w going into protect mode..

    My crunch 3500w is going into protect mode when i turn up my radio. I have a 2008 impala with bose.. i installed a LOC to stock radio, connected power and ground to the stock amp. ran both speaker wires from LOC to correct sides of rear 2 speakers.. I grounded the amp by the spare tire on bare...
  2. C

    Trying to identify a component

    So I have a new project regarding an electric bike and I am trying to find a replacement transistor haven't had any luck with the code anyone have any advice or tips?
  3. C

    Trying to repair a Sony TC-366 Reel to Reel machine

    Hi, I'm new here and I'm sorry if this'll sound stupid, but I'm no master in electronic repair. So I got myself a reel to reel machine (Sony TC-366). Not the best available but it will serve well as a real "not-so-good tape simulation" in my studio. Now, despite a couple of mechanical issues...
  4. A

    Help wiring a 3 prong solenoid valve with a solid-state relay

    Hello, I am fairly new to electronics and I needed some advice with a project I am working on. The image above is the wiring diagram of the setup. The 9V battery is not correct, instead the power supply is a Triad switching mode power supply that outputs 24V. The resistors are 10000 ohms if...
  5. S

    What went wrong? Help please!

    Hello, I'm hoping that this is the right forum to post this type of question! Here is the problem: I have a large format printer that has a built in chiller. A few days ago we smelled a slight burning smell coming from the machine. We could not pinpoint the issue so we let it continue to...
  6. M

    Does anyone know what this is?

    I am looking for a way to source the spring contact shown in the image? Does anyone know where I can get this from?
  7. A

    Detecting AC VOLTAGE [INPUT (0-200) up to 1000 V AC] [OUTPUT: Any low DC is ok]

    Hello! I need to build a circuit with a DC output that is ON whenever the AC input is active (a.i. voltage is present at the input) ideally from as low as possible but it could be as high as 200, 250 VAC and still be acceptable but needs to survive up to 1000VAC spike and some 600VAC constant...
  8. J

    Newbie Broke Antenna Wifi Module, Help

    Hello, let me start off by saying that i am Completely green when it comes to chips and hardware and PCB's ect, but im slowly learning. That being said, i have a little delima and im seeking advice. I have a Zosi wireless security camera NVR whos u.fl connectors for the antenna broke off, i...
  9. A

    Second Pair of Eyes

    Hello all, this is one of my first electronic schematics and I'm trying to make sure everything looks good (electrically) before I order board and components. Another set of eyes on this to criticize and give constructive feedback would be great and point out any issues or mistakes my circuit...
  10. T

    Help - Device to ensure distance between point A and B are level.

    Hello, I am new to this site and I am hoping someone could steer me in the right direction. I am trying to determine if there are any devices/sensors// I could use (that are minimally invasive) and perhaps could be used in conjunction with a smart device, to determine if point A is level with...
  11. T

    Beginner needing help

    I am a beginner in the whole circuit board world and need some help. Well alot really. I am trying to make some to help me in work as Ac tech. I have a drawing of what I am trying to make but not sure the best way. I have checked Amazon for different parts I need but think it will be more...
  12. V

    Can someone please explain the "readKey" subroutine in this code

    I haven't learnt the coding part of keypad integration in 8051 yet, but I'm aware of the working and theory behind the integration. I'd really appreciate it if someone explains the readKey subroutine in the attached file. Thanks in advance. - Kat
    • VortX
    • Thread
    • 8051 help microcontroller microcontroller projects
    • Replies: 3
    • Forum: 8051/8951
  13. E

    Safety guards for my Tesla coil project

    I want to make a Tesla coil for my school project and because ı dont want to die ı need some kind of safety ı have something in my mind like grounded aliminium foil gloves or electric-taping every exposed wiring but need advices from experienced people.
    • EezyPeezy
    • Thread
    • help high voltage secruty school project tesla coil
    • Replies: 3
    • Forum: High Voltage
  14. U

    Circuit-design Peltier Element

    Hi. I need a little help from experienced people. I want to control a Peltier element with a microcontroller, with PWM. May? The peltier element has the following parameters: Imax=8.5 A, Vmax=15.4V.Ok... I have a 12 volt source,17A for example. How can i design the circuit so that i can...
  15. P

    Help needed with protoboard circuit!!

    I'm in my first year in college and I don't know what to do. I have to build a circuit with a protoboard tomorrow and I haven't done this in my whole life, I'm completely lost. I honestly don't know what to do, so please, if you could help, it would be amazing. This is the circuit (the...
  16. daniela18

    I want to connect a Peltier Element to a 3.3V power supply

    Hi, I need help to anyone who can help me :) I want to connect a Peltier Element to a 3.3V power supply . I use TEC-40-33-127. I attached below some specifications of the device. I need your help because I don't know how to make the circuit schematic I don't know what values to choose from...
  17. C

    Voltage Division Question

    Hi guys, I'm working on a problem here where I believe one of the steps uses voltage division to find the voltage across the 10ohm resistor. However, that's not how the solution found the voltage across the 10ohm resistor. I was trying to find the voltage across the 40ohm resistor first and...
    • cwible
    • Thread
    • circuit dc/ac electronic help help needed voltage voltage divider voltage output
    • Replies: 3
    • Forum: General Electronics Chat
  18. T

    Wierd Request

    I need to remove all WiFi capabilities from my nvidia shield tablet. Where is it? What should I look for? I can post pictures I'm just not sure what y'all need to see.
  19. electrolives

    LTSpice AC Signal 30sin(2pi50t)

    How can i put the Vi's values on LTSpice? 30sin(2pi50t)
  20. H

    Unknown Symbol

    I'm looking at a circuit diagram for an Omnichord, it seems pretty easy to follow but I have 2 component symbols that I can't figure out what they are. any help is appreciated :) (Its the dotted line and ladder symbols)
  21. J

    Help looking for Perfect LCD??

    Hello, I have been searching the Internet for days now, hours wasted scrolling through alibaba and aliexpress with very little luck. I am looking for a 1 to 2.6 inch color lcd (doesn't matter if oled or tft or whatever) with a resolution of around 480x800 or similar with an aspect ratio of...
  22. S

    Simple PCB design help

    Hello, I am currently working on a project where i want to replace the switches in a guitar hero guitar, in my case the world tour one. The current problem is that the stock switches are really bad and wear out easily to the point where they miss strums, so to remedy this i have mechanical...
  23. WHYnot86

    Design assistance needed - Bluetooth controlled LED

    Hi, I am looking to build a Bluetooth controlled LED circuit. There must be 4 separately addressable LED arrays each with driver to control current. A battery, charger and protection circuit. A sensor to measure distance from the LED's to the surface they are lighting up. A sensor to measure...
  24. S

    Help!!!!!, Relay in motorcycle 12V environment,

    Hello, I was hoping some can help me figure if i can use SRD-12VDC-SL-C, to turn may parking light into blinkers. Here is the issue; I purchased aftermarket blinkers for my motorcycle, these only light up while blinkers are turn on, making you less visible during regular operation. Hence...
  25. T

    Electronically controlled manifold, HELP!

    Hi Guys, I'm hoping someone can help me fine the right product as I don't do much with electronics/pneumatics in my design work. Basically I have a very low pressure air pump which needs to feed into a manifold with 4 or 5 exit ports (ideally 5). Each manifold needs to be electronically...

Latest threads

New Articles From Microcontroller Tips

Back
Top