Anybody know where I can get a collection of electrical symbols clip art

[Robert Hill]

Hi all,

Just wondering if anyone knows where I might find a set of downloadable clip art/images of all the usual circuit component symbols.

I've tried using some of the circuit designer software and haven't got very far with them so thought about just using a desktop publisher and some images of symbols but haven't found any so far. Anyone know of any on the web?

Thanks,
Bob

 

[Arouse1973]

Hi Bob
Is this to draw circuit diagrams with? If so what are you having trouble with?
Adam

 

[Robert Hill]

Yes, for drawing diagrammes with to share on the forum. I've tried universal circuit simulator and similar ones but they're a bit complicated for what I need, I need something simple and basic

 

[Arouse1973]

Tina Ti is what you need. It's free and very easy to use. Download it and give me a shout if you have any issues. http://www.ti.com/tool/tina-ti
Adam

 

[Robert Hill]

Thanks will give it a go. Also looking at tiny cad, is that worth giving a go as well?

 

[Arouse1973]

Never used it. But I would stick to one package for the moment. If you want to do PCBs later on then DIP TRACE is another good package.
Adam

 

[KMoffett]

ExperssPCB is a free schematic/PCB program. The schematic program is pretty intuitive and easy the make new symbols or modify existing ones. You can export the schematics to Bitmap or Metafile formats. Note, it's not a simulator.

http://www.expresspcb.com/

Ken

 

[BobK]

I second ExpressPCB as the easiest package I have seen to learn and use, though the schematics are not particularly pretty.

Bob

 

[KMoffett]

Bob,

I disagree. I think the schematics are beautiful! Well, for the price.

Ken

 

[Robert Hill]

I've just got the texas instruments one - quite scary having to fill in the info for us exports thing!

just playing with it now.

Is there a way to run a visual simulation of circuits in the TI programme? In the sense that if you've got LED's as part of the circuit they'll flash etc. Can't see an option for it at present.

 

[Arouse1973]

It should flash on it's own.
Adam

 

[Arouse1973]

Ahh I was mistaken. I have the student addition of Tina which does flash the LEDs. To see the output you can connect an Oscilloscope to the circuit using one of the meters to the circuit or use the transient analysis option. Tell me what you want to draw and I can help.
Adam

 

[Robert Hill]

This is what i've drawn so far. I've put a copy up on the circuit design section to ask for feedback as well.


I'll play with it a bit more and come back if i've got questions. Thanks for all your help so far!

 

[Arouse1973]

Robert you have opened a new post with the same circuit info. Just keep one otherwise it might confuse people. We will answer any questions related to this even questions about the drawing of the circuit. Choose one to carry on with. Any related info from the other can be merged by one of the moderators later.
Adam

 

[Robert Hill]

Ok thanks, didn't mean to be untidy. I'll not post anymore in this one as it's achieved my purpose of finding a good program to draw schematics with. I'll post in the other one

 

[Arouse1973]

Ok Robert, no probs.
Adam

 

[Colin Mitchell]

You cant put a transistor directly across a battery.

 

[Gryd3]

You cant put a transistor directly across a battery.

All of the transistors in that circuit are connected directly between the positive and 0V rail of the battery.

As Colin mentioned, this is a no-go. As soon as one of those transistors conducts, it will short out the battery.
Step back, and think about the function you want the the transistors to do. Add a current limiting resistor and you will be much better off

Pull down resistor is connected between the transistor and the 0V line. You then take the measurement between the transistor and resistor.
When the transistor is 'off' it behaves like an open circuit and the measurement will be 0V. When the transistor turns 'on' it behaves like a short circuit which results in the full battery voltage being across the resistor. The measurement here will be 'high'.

Pull up resistor is connected between the transistor and the positive line. You then take the measurement between the transistor and resistor.
When the transistor is 'off' it behaves like an open circuit and the measurement will be 'high'. When the transistor turns 'on' it behaves like a short circuit which results in the full battery voltage being across the resistor. The measurement here will be 0V.

The difference is merely which side the resistor will be in relation to the transistor.
Other than that, if you are using a transistor to 'power' something that's a bit of a different story, but the resistor would essentially be replaced by what you want to power.

 

[Arouse1973]

Guys stop posting on this thread. We have already covered this on another thread. Robert opened a very similar post with the same circuit. I noticed this and asked him just to post on the other thread to save confusion.
Cheers
Adam

 

[Robert Hill]

https://www.electronicspoint.com/th...-make-a-who-pressed-first-quiz-buzzer.273199/
That's the other thread.