Designing an Electronic Timer Circuit Using NE555 IC or BC548 Transistor

Click For Summary

Discussion Overview

The discussion centers around designing an electronic timer circuit using either the NE555 IC or the BC548 transistor. Participants are seeking assistance with a non-functional circuit and are exploring the requirements and components necessary for successful implementation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Pervez expresses a need for help with a timer circuit that is not functioning and requests a tested circuit diagram.
  • Another participant asks Pervez to provide a schematic and a picture of the breadboard setup to better understand the issue.
  • One participant suggests that at least two transistors are necessary to generate a waveform, questioning the feasibility of achieving the desired timer functionality with only one transistor.
  • A participant provides historical context about the NE555 IC, noting its widespread use and reliability, while also suggesting resources that may help diagnose the circuit problem.
  • A later reply acknowledges a misunderstanding regarding the terminology, clarifying that the NE555 produces pulses or waveforms rather than functioning as a counter.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the design approach, with differing views on the necessary components and functionality of the circuit. The discussion remains unresolved regarding the specific design requirements and troubleshooting steps.

Contextual Notes

There are limitations in the discussion, including missing details about Pervez's circuit design, assumptions about the components' capabilities, and the lack of a clear schematic or breadboard layout to analyze.

pmostafa
Messages
6
Reaction score
0
Dear

I would like to design a simple electronic timer circuit by other NE555 IC or BC548 Transistor. I’ve got a circuit but it doesn’t work. Would you please me in this regard?

Appreciate, if you would get back to me with tested circuit diagram at your best possible time.

Regards

Pervez
 
Engineering news on Phys.org
pmostafa said:
Dear

I would like to design a simple electronic timer circuit by other NE555 IC or BC548 Transistor. I’ve got a circuit but it doesn’t work. Would you please me in this regard?

Appreciate, if you would get back to me with tested circuit diagram at your best possible time.

Regards

Pervez

Can you post your schematic and a picture of your breadboard?
 
you'll need at least 2 transistors to get a waveform, I don't think it can be done with one transistor and you said timer (aka counter), you can't make that with the parts your describing.
 
?

NE555 is the ubiquitous Signetics timer IC ,
Introduced in 1971 by American company Signetics, the 555 is still in widespread use due to its ease of use, low price, and stability. It is now made by many companies in the original bipolar and also in low-power CMOS types. As of 2003, it was estimated that 1 billion units are manufactured every year.[1]
http://en.wikipedia.org/wiki/555_timer_IC

Plenty of information here to help you figure out why your circuit doesn't work.
http://my.ece.ucsb.edu/York/Bobsclass/2C/Tutorials/App%20notes/555an.pdf

as Berkeman said, post a drawing of what you tried...
 
the 555 produces pulses or waveforms, my mistake I saw the word timer and thought of counter. don't mind me I'm stupid today :wideeyed:
 

Similar threads

  • · Replies 7 ·
Replies
7
Views
2K
Replies
68
Views
7K
Replies
8
Views
2K
  • · Replies 10 ·
Replies
10
Views
6K
Replies
16
Views
3K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
5
Views
3K
Replies
12
Views
3K
  • · Replies 2 ·
Replies
2
Views
1K