All Questions
9
questions
0
votes
3
answers
912
views
"Source", "sink" or both?
Having solved the mystery of "pulling" and "pushing" devices, it would be interesting to do the same with "sourcing" and "sinking" devices.
Background
A ...
- 17.5k
2
votes
1
answer
390
views
Will this optocoupler circuit work for sensor and DC motor?
I am working on a project in which I need to operate a DC motor and some ultrasonic sensors.
I want to operate the motor using motor driver DRV 8871 by giving logic signals and read sensor value on ...
- 65
1
vote
2
answers
3k
views
Matching sensor output with PLC input
I am trying to add a height captor for a line of my production where I work. I found this Banner captor (QS30LLPQ) and it has 2 bipolar discrete outputs (PNP and NPN). Now, I am trying to decide which ...
1
vote
1
answer
200
views
Rotary Encoder - Power Source for small Fork Light Barriers with NI 9401 [closed]
Task
In order to measure the angle and calculate the angular velocity and acceleration of a large metal wheel with a rotational frequency \$f = 0.01 \ldots 1.00~Hz\$, I try to build a custom rotary ...
- 211
0
votes
1
answer
678
views
Is it possible to sink and source from one output pin using a darlington driver
Sinking and sourcing with a darlington driver
I asked a question about sinking and sourcing LEDs while using a darlington driver. The images were slightly unclear so i have redrawn it. I had too many ...
- 17
1
vote
1
answer
184
views
Led must be mounted SINK or SOURCE so as not to interfere with communications? [closed]
I used 3.3v microcontroller. I want to add TX LED and RX LED communication on RS232, RS485,
TTL/CMOS.
My question:
Led communication must be mounted as SINKING or SOURCING on I/O microcontroller ...
- 237
12
votes
8
answers
53k
views
Sinking and sourcing current
I have been reading that NPN transistors are sinking and PNP are sourcing devices. I do not really understand this concept. It says current source device connects load to Vcc and current sinking ...
- 153
9
votes
2
answers
2k
views
How to redesign a circuit to use a current sinking IC rather than a current sourcing IC
I'm building a serial servo controller to learn about electronics and assembly language as part of my hexapod robot project. Quite early on I decided that I needed more I/O channels than my ATTiny2313 ...
- 1,078
21
votes
6
answers
13k
views
current sourcing, current sinking
I'm a student studying electronics and I'm having trouble understanding the concept behind current sourcing and current sinking. We've covered it in a lab using a 7404 and an LED and all that. Just ...
- 211