Hello.
I'm new at electronics and this is my first year at a vocational training school. I'm ADHD, I have been years without studying and the school is a bit of a disaster. This combination made me to have tons of pending homework and having problems understanding concepts, I also lack incomes and unable to pay a private tutor too.
No more crying, here's my question.
We have some exercises about making combinational circuits. They are described and we must generate the truth table and make the functions, then use Karnaugh Map and the logic circuits to use. Finally we mount it on a breadboard and the teacher checks it works.
The truth table and circuit seems ok, but something fails here.
The 9V really gives me 6.12V, I'm not sure if that can be the problem. I have no money to get another battery until next week. I have a 7805, 7806, 7812 and L1084 lying around (not sure if I can use one of them to power the circuit and get it from a computer power supply).
I used some CMOS logic gate circuits:
- 4011 (Quad 2-input NAND gate)
- 4082 (Dual 4-input AND gate)
- 4049 (Hex inverting buffers)
Plus LEDs, resistors, cables and a dip switch.
Inhábiles= Days the circuit doesn't work.
Entrada = Input
Salida=Output
Here are the Karnaugh Maps of each function.
Refrigeración = Refrigeration
Calefacción= Heating
Ventilación=Ventilation
Here's the schematic, that I finally do in a breadboard. I did it for reference an as a way to show the logic gates of it.
Here's the breadboard, it's quite old but I tried to check the connections and seems to work fine.
I know my style is quite crappy, but writing this stuff is still difficult for me.
I can provide extra detail, even translating the problem if necessary.
Thanks for your reading
I'm new at electronics and this is my first year at a vocational training school. I'm ADHD, I have been years without studying and the school is a bit of a disaster. This combination made me to have tons of pending homework and having problems understanding concepts, I also lack incomes and unable to pay a private tutor too.
No more crying, here's my question.
We have some exercises about making combinational circuits. They are described and we must generate the truth table and make the functions, then use Karnaugh Map and the logic circuits to use. Finally we mount it on a breadboard and the teacher checks it works.
The truth table and circuit seems ok, but something fails here.
The 9V really gives me 6.12V, I'm not sure if that can be the problem. I have no money to get another battery until next week. I have a 7805, 7806, 7812 and L1084 lying around (not sure if I can use one of them to power the circuit and get it from a computer power supply).
I used some CMOS logic gate circuits:
- 4011 (Quad 2-input NAND gate)
- 4082 (Dual 4-input AND gate)
- 4049 (Hex inverting buffers)
Plus LEDs, resistors, cables and a dip switch.
Inhábiles= Days the circuit doesn't work.
Entrada = Input
Salida=Output
Here are the Karnaugh Maps of each function.
Refrigeración = Refrigeration
Calefacción= Heating
Ventilación=Ventilation
Here's the schematic, that I finally do in a breadboard. I did it for reference an as a way to show the logic gates of it.
Here's the breadboard, it's quite old but I tried to check the connections and seems to work fine.
I know my style is quite crappy, but writing this stuff is still difficult for me.
I can provide extra detail, even translating the problem if necessary.
Thanks for your reading
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