Questions tagged [test]
A definitive procedure that produces a test result.
206
questions
0
votes
1
answer
158
views
Open and short test for 2 ground pin
If a device has two ground pins. Using the normal open and short test will not tell if one ground pin is open and the other is good. How to detect this kind of situation?
Thanks.
CommunityBot
- 1
0
votes
1
answer
30
views
Checking battery capacity of 7 amp 12 volt AGM batteries for UPS
I have several 1000 watt Triplite sinewave UPS. The batteries had a date code of 2021 and testing with an 800 watt resistive load ,two heat guns,I was getting around 3 minutes run time,specs state ...
- 1,822
2
votes
4
answers
3k
views
Oscilloscope probe points
The answer to another question identified two PCB-mounted scope probe "holders":
I can't find these at any distributor's web site because I don't what they are called. Can someone, please, give me ...
0
votes
1
answer
40
views
Using a 555 Timer to Connect to An Asynchronous Counter in Proteus
I'm trying to drive a binary asynchronous counter via the following setup though usually if I see binary counters they are connected to a 'CLK' source of some sort. In an ordinary case, the circuit ...
- 14.5k
0
votes
0
answers
33
views
Double pulse testing the first transients on the current
I would like to comprehend what represents the first pulse on the ID current of the LS and HS in double pulse test configuration. I have the circuitry as shown:
LS is my active switch, when I turn ...
- 71
-1
votes
3
answers
51
views
Where or How can I make AC adjustable load for 120? [duplicate]
The thing is that I want to test the efficiency of some DC-AC inverters but I have to use an adjustable load because the CEC or EU efficiency weighted calcs request to have the perfomance on 5%, 10%, ...
- 407k
0
votes
0
answers
33
views
Parametric or Template test by Ethernet Compliance Test
I am trying to design this part of TC6 from Ethernet test fixture board. As I dont need rest part of the parts for my test. Can someone tell me what are the loads are? Here three different loads can ...
- 1
1
vote
1
answer
359
views
Where can I find information about "Enhanced Policies and Procedures Exam" for IPC?
I'm taking the CSE test for IPC-J-STD-001 and at chapter 7.Certification Exam Overview, I can see that there are 3 types of tests.
Policy and procedure test (10 questions)
Closed book test (25 ...
0
votes
2
answers
140
views
Get practical crystal tester working
After working with quartz components in circuits, I planned to make a test on them in order to be sure if they are really still working as they are supposed to be.
I found this circuit on the internet:...
- 407k
0
votes
1
answer
96
views
Question on testing transistor TIP120 NPN using multimeter
Could someone please help to confirm if these values for a TIP120 NPN transistor based on the diode setting of my multimeter, indicate any potential fault?
Base (Positive) with Emitter (Negative): 0....
- 16.5k
5
votes
5
answers
11k
views
Applying load when testing battery voltage
Why do we need to apply a load to a battery when testing its voltage?
I've been testing battery capacity so far using a multimeter and just connecting the probes to the positive and negative side of ...
- 72.5k
2
votes
1
answer
636
views
Electronically verify whether a cable is connected to an RJ45 connector
Background:
I have a device that interfaces with a motor controller over RS-485 via an RJ45 socket. Currently, the port is a standard 4x2 RJ45 connector with the RS-485 using pins 2 and 7.
Currently ...
CommunityBot
- 1
0
votes
2
answers
1k
views
How to troubleshoot low-voltage home lighting system from 50s
My home, built in the 50s, has a Sierra low-voltage lighting system, where low-voltage 24DC switches control relays that power the normal 120AC lights. In the last week, the switches have failed ...
- 1
0
votes
0
answers
453
views
How can I test whether my 3 wire electric motor is broken? [duplicate]
I have a motor that I'm trying to work out if it's faulty or not. The motor make and model is EMC RB2C-190-060 K010 (photos below) -
230V
~ 50/60 Hz
2μF-450V
65/90W
0.3/0.4A
The motor has four wires ...
- 96.8k
1
vote
1
answer
44
views
EMC and Control Area Networks [closed]
With radiated EMI tests, do we need to take into account the communication cabling and its influence on EMI?
I can't seem to find one standard that describes how CAN busses should be configured in EMI ...
- 39.7k