1. Elgordoroberto

    Ic led switch circuit

    Hello all, I’m helping my daughter with a design project and part of it needs a simple led control circuit. Using a single push button and 4 leds, I need an ic circuit that would light led 1 with th e first button push, led 1 &2 with the second, led 1,2,&3 with the third button push, leds...
  2. G

    What is the simplest switch circuit I can build for a 30-amp (220v) machine?

    I was considering using a Rele but they don't work very well with high current (the ones that work are expensive) since its a high current I need the circuit to hold and at the same time not have much resistance when the current is passing through it. Is there any circuit I could use? I think...
  3. K

    Repairing Christmas/Fairy Lights

    I have a little experience with wiring after having to hot-wire my aftermarket radio in my car when changing it out, however I do not know how to fix this issue. The wires in the plug were loose and the lights were not turning on because of this, so i cut it off and figured it'd be as simple as...
  4. Z

    Guitar effect on stripboard, tips for ignorants

    Hello everyone, I am new to the forum. I am not an electronics guy, but as an engineer, and a fairly manual person, I think I will be able to juggle enough. I want to build a guitar pedal from scratch (starting from "easy level"), to help me I used a graphic app on which to convert the diagram...
  5. Andersons

    Tough and stiff switch

    Hello, I’m looking for a strong high quality switch with very high actuation force, I will control two loads with it and need a center off position like this: ON-OFF-ON. A ON-ON-ON switch will work too. Number of poles doesn’t matter, rocker or toggle doesn’t matter. It need to be no bigger than...
  6. Dynam0

    Making a portable battery powered mini pc

    As the title says, i want to build a custom mini pc. The reason i'm not buying just a laptop or a mini pc are many...First of all i want something that will be able to be upgraded in the future without problems, that's why i'm putting a Micro-Atx inside instead of a laptop mobo. 2nd i want...
  7. Bruno Malbusca

    Power switch PMOS controlled by button or Microcontroller (or both)

    Hello, I´m trying to design an analog circuit to use a push button to turn on an MCU and then use it the same push button to change modes. A "one push button circuit". To achieve that, I used a pmos to work as a switch on the power signal and then used a 2 nmos circuit for or signal circuit that...
  8. T

    how can I read better datasheet of Relay(TX2SL-LT-12V-TH) to connect its pin properly?

    I have been looking around of this data sheet so I can know which pin I connect to the DC and which one I can use for NC or NO so I make my circuit running. on the data sheet I could not find due my lack experience in using relays, the pins and their functions on the following data sheet:relay...
  9. Siridean

    Top Level Design help for a 'switching array'

    Hello, I was hoping to get some help/advice on a personal project I'm working on that requires quite a bit more electronic hardware involvement than I'm used to. I can manage code, computers, microcontrollers etc fine but I'm not very well educated in general electronic hardware at all besides...
  10. 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...
  11. xThornx

    DPDT Switch Motor Control Precautions

    I'm trying to control brushed DC motor that is connected to a gearbox that moves a linear slide to raise and lower a sensor. The motor will be controlled by an operator that is raising and lowering the sensor before and after the runtime of the general system. I am trying to keep it as simple as...
  12. Nabolt

    Help identifying switch

    I am repairing a Sony CD Boombox and the CD player latch switch (which holds the cover and indicates it’s closed) is busted (see views below). No part number or reference anywhere I can find. It does have 2 mini micro pins at the bottom. The closest I could find matches it in size looks like a...
  13. 2

    Momentary to control on & off circuit

    Hi everyone. As stated I am trying to figure out the easiest way to make a momentary switch control button control the on and off for my 12V lights I have on my vehicle. I know the very basics of electronics, I currently have the lights powered by two different switches on relays. Longer story...
  14. M

    Need transistor circuit to control optical switches

    I am a digital designer so anything analog is out of my expertise. I need to control an optical 2x2 switch with the following truth table: The pulse is in the msec range and the driver current is about 200mA. I have an FPGA that can control the transistors but not sure how to arrange them...
  15. NooBinProgress12

    Making a 110 channel input, Voltage sniffer, from scratch. Advice appericiated!

    Hello Everyone, my name is Fredrik. I am new to this forum, and I want to ask you guys about a project I am working on atm. I plan on making a test tool (or voltage sniffer) for monitoring voltage on multiple signals at once. The ECU I will be monitoring has up to 110 different inputs. My first...
  16. D

    Overflow-multiply error in PSpice when swapping one IGBT for another

    Hi. I'm trying to simulate this full-bridge single phase inverter for a project at school in PSpice. As the main objective is picking the IGBT switches and making them work in a full converter, I am just using a simple pulse voltage source for the modulation. I made it work with the default...
  17. B

    Is this switch fit for my board?

    Hi all, The push button switch of my multimeter broke down. I threw the switch out. During the holidays I got intrigued and would like to fix it. This is the schematic of the switch I bought: https://robu.in/product/7x7mm-6-pin-dpdt-self-lock-lock-push-switch-10pcs or a direct link...
  18. Genosphere

    Trouble: Simulator expectations vs constructed circuit; 555timer.

    So I am having some trouble building the circuit I had built in a sim, several to be exact, which all seemed to work the way I wanted them to. Now that I have built the circuit on a board, Im not getting the results expected. Checked wiring and and parts, things look ok. Odds are I have missed...
  19. W

    MOSFET allows current through even when turned off

    Hi, I'm relatively new to circuit design and I'm trying to create a circuit to turn on/off a 6V DC motor using a microcontroller. To do this, I am using an N-channel MOSFET. The MOSFET appears to be working, because the drain to source resistance when the gate = 0V is ~10 MΩ, and when the gate...
  20. Ron2020

    Wiring Headlight and turn signals for a simpleton

    Greetings, My current project is trying to wire a headlight and two turn signals to a motorbike using a 12v rechargeable battery. There are no existing electrical parts of any kind for lighting aside from what I’m doing currently. Complete custom job. I need advice: What I have is: A switch...
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