test circuit

Greetings. I'm an electronics hobbyist and I'm currently stuck on Simulating a PCB before Fabrication. I designed a PCB using the EasyEDA.com platform, but I would like to simulate its response before sending it for fabrication. How can I test the PCB, and which platforms/software(s) can I use...

Hello all I have a project and going to replace a Phototransistor. The previous circuit is using a sensor has photo Darlington and the replace sensor just a common phototransistor Previous sensor: The replace sensor: The previous sensor has a test circuit made as: sensor A (Anode) as...

Hello, I want to make a test circuit with led, button, potentiometer, jumper etc components to test the circuits. By connecting my circuit connectors to this board, I will test whether the relevant lines work. I need schematic and layout examples for this structure and advice to improve it.

I'm new to electronics and decided to learn something new by trying to put together a small rectifier circuit that converts 24VAC to DC. So I put together a little full-wave rectifier circuit that consists of four diodes and an LED and ran into an issue when I tried to measure the DC output...

Based on the Jtag stage diagram, before Jtag shifts the bits (Shift-DR) the scan cell needs to capture the bits first (Capture-DR). Where does the bit come from? Is it from some test patterns (which has 0s and 1s) and Jtag loads them via digital pins during the capture-DR stage? How many digital...

It's weird that primarily 50% of the time the purple test point is the only color to have this issue, why purple? Part> https://www.mouser.com/datasheet/2/215/Keystone_Electronics_04082019_5190TR-5199TR-1551357.pdf

Hi guys, I tend to use quite a few LM358's in several of my circuits but I have come across some LM358's which have been faulty. I have soldered them into my circuits and after discovered that the LM358 is at fault then have the annoying task of unsoldering the LM358 and replacing it with...