For my Finals project we were tasked to create a circuit using 3 basic ICs(8 pin ICs). They can't be logic gates, they can only be comparator, amplifier or timer ICs. I tried looking online for diagrams I could use, but I couldn't find any. We were told to create our own diagrams, but we were never actually taught how to do so, so this is kind of my last resort. Does anyone know of where I could find possible diagrams to use for my Finals project? Or if you could provide one yourself if you know how to. Any application will do for the circuit. At the very least, it would be nice if anyone could teach me the basics of how to actually do it myself, as I would like to learn too. Thank you.

 

You have reached your finals and been assigned a task that they never taught you how to complete.

Something is wrong with this picture.

 

You have reached your finals and been assigned a task that they never taught you how to complete.

Something is wrong with this picture.

I agree. I tried doing it on my own but I have no idea where to start.

 

For my Finals project we were tasked to create a circuit using 3 basic ICs(8 pin ICs). They can't be logic gates, they can only be comparator, amplifier or timer ICs. I tried looking online for diagrams I could use, but I couldn't find any. We were told to create our own diagrams, but we were never actually taught how to do so, so this is kind of my last resort. Does anyone know of where I could find possible diagrams to use for my Finals project? Or if you could provide one yourself if you know how to. Any application will do for the circuit. At the very least, it would be nice if anyone could teach me the basics of how to actually do it myself, as I would like to learn too. Thank you.

Could you post the actual statement of task? As you explain things it sounds absurd.

 

State variable filter - uses 3 op-amps. Nowhere does it say the 3 ICs have to be different.

 

State variable filter - uses 3 op-amps. Nowhere does it say the 3 ICs have to be different.

my bad, i didnt add that they are supposed to be different

 

Could you post the actual statement of task? As you explain things it sounds absurd.

This isn't the original as I had to translate it to English:

Guys FINAL Project: think of a circuit that uses 3 DIFFERENT BASIC ICs, like 555, LM357, 393... etc.... not logic gate ICs alright... it can be comparator, amplifier or timer IC's... think of an application.. basic IC means 8 PINS. or 8 feet... do not use ones with 16 pins. 8 PINS only... post your titles here, first come first serve.. create your own circuit.

 

This isn't the original as I had to translate it to English:

Guys FINAL Project: think of a circuit that uses 3 DIFFERENT BASIC ICs, like 555, LM357, 393... etc.... not logic gate ICs alright... it can be comparator, amplifier or timer IC's... think of an application.. basic IC means 8 PINS. or 8 feet... do not use ones with 16 pins. 8 PINS only... post your titles here, first come first serve.. create your own circuit.

Isn't part of the final project for YOU to come up with an idea and then for YOU to design a circuit that implements that idea? That would certainly seem to be implied by "create your own circuit."

You seem to be saying, "I couldn't find a pre-published circuit where someone else has already done my work for me, so could someone here please do my work for me and send it to me?"

 

Isn't part of the final project for YOU to come up with an idea and then for YOU to design a circuit that implements that idea? That would certainly seem to be implied by "create your own circuit."

You seem to be saying, "I couldn't find a pre-published circuit where someone else has already done my work for me, so could someone here please do my work for me and send it to me?"

My problem is my class was never actually taught how to create our own circuits from scratch, or even modify already existing circuit diagrams. I've been trying to learn on my own but I have no idea where to start as videos online don't really explain it very well.

 

Just to help us get started, what sort of class was this? What subjects?

 

Just to help us get started, what sort of class was this? What subjects?

It's an Avionics course, and the specific class is called Microprocessors. Our previous projects consisted of our professors giving us circuit diagrams, and we etch them onto One sided PCBs and then submerge it onto Ferric Chloride. We were taught what the different components do, but we were never taught how they work together as one and why they are connected to each other, and how to go about making your own circuit from scratch.

 

.... we were never taught how they work together as one and why they are connected to each other ....

Well, if that's where you are coming from, that's a pretty heavy final project. You are not going to learn circuit design from a standing start in a single project.

 

Sorry but you mix concepts.
PCB is not schematic.

Imagine you need to solve some simple problem and go from there.

You are into Avionics? Are you sure?

 

Guys FINAL Project: think of a circuit that uses 3 DIFFERENT BASIC ICs, like 555, LM357, 393... etc....

You are not being asked to DESIGN one, it seems. Perhaps finding one on the web is sufficient, given your lack of design practice.

There is no LM357, by the way. Perhaps a LF357.

 

Try one of metal detector schematic. One chip for transmitting coil oscillator, one op-amp for receiving coil amplifier and 555 for buzzer.

 

Think of an application. That means YOU.

Create a circuit. YOU again.

 

My problem is my class was never actually taught how to create our own circuits from scratch, or even modify already existing circuit diagrams. I've been trying to learn on my own but I have no idea where to start as videos online don't really explain it very well.

This might be a language translation issue, but maybe not. Check with your instructor and ask them, very explicitly, whether you are expected to design a circuit that uses three different 8-pin ICs, or just find a schematic for such a circuit and then layout the PCB for it and build the circuit. From your later description of what you did in the course, it sounds like you probably are just being asked to just find a project schematic that is already out there and then layout the PCB and build it.

But your description of the course still leaves me scratching my head. Its an avionics course called microprocessors, but yet it doesn't sound like you actually did anything with a microprocessor, just made circuit boards from schematics for circuits that were given to you, but not explained, and now your final project is restricted to using only 8-pin ICs and no logic chips (which rules out microprocessors).

Sounds like you might want to think hard about whether this school is worth attending. Are you really learning anything? Is a degree (or certification, or whatever) from here really worth anything?

 

Based on what you say you have done in your course, and in addition the specific instruction that only 8 pin dip can be used and not 16 pin, is this project an exercise in translating a simple 3 chip circuit into a PCB layout? That makes more sense - find a circuit and put it on a pcb.

What language is the course in, from what country?

 

Hmmm... Microprocessor ATtiny, Timer 555 or better yet cascade 2 of them as Oscillators, and an Amplifier LM386 to drive a speaker to make hellacious noise. There's 3 that play well together...