# Can someone help me turn this circuit diagram onto a breadboard?

Joined Nov 16, 2022
7

Joined Jul 18, 2013
28,831
What do you mean by 'turn it in to a bread-board'?
Do you have a board already?
You typically lay the components out as per the schematic, they usually have a +ve & -ve power rail built into them for the supply.
BTW, you used a Earth GND symbol, Is Earth intended?

Joined Nov 16, 2022
7
What do you mean by 'turn it in to a bread-board'?
Do you have a board already?
You typically lay the components out as per the schematic, they usually have a +ve & -ve power rail built into them for the supply.
BTW, you used a Earth GND symbol, Is Earth intended?
Yes, I already have a board and having trouble laying the components correctly and yes the earth is intended

Joined Jul 18, 2013
28,831
What kind of trouble?
It is a very simple circuit, so it should not be a great deal of a problem.
What is the reasoning for earthing the power common on this circuit?

Joined Nov 16, 2022
7
What kind of trouble?
It is a very simple circuit, so it should not be a great deal of a problem.
What is the reasoning for earthing the power common on this circuit?
It is a very simple circuit but I don't understand why It's giving me this much trouble.
My teacher uses this ground symbol to help us know what Is the ground of this circuit

Joined Jul 18, 2013
28,831
My teacher uses this ground symbol to help us know what Is the ground of this circuit
Unfortunately, misused this way by many!

But what kind of trouble are you experiencing?
Getting it working or wiring it?

#### crutschow

Joined Mar 14, 2008
34,847
You place the parts on the breadboard so as to minimize the distance of the connections between them.
Then you just use wires to connect the parts together as the schematic shows.
What problem do you have with that?

#### panic mode

Joined Oct 10, 2011
2,887
show your attempt.. post clear picture of the board, parts and connections you made

#### panic mode

Joined Oct 10, 2011
2,887
and update schematics by labeling IC pins:

Joined Nov 16, 2022
7
Unfortunately, misused this way by many!

But what kind of trouble are you experiencing?
Getting it working or wiring it?
I can't get it working

#### DickCappels

Joined Aug 21, 2008
10,246
Do you have this?

On the LM741 leave pins 1 and 5 unconnected. All of the other components in your circuit only have two leads, and the polarized capacitors are marked.

Most likely your teacher intends for you to learn by placing and connecting the components. We cannot provide you with a layout but can answer general questions.

This may be of some help:

#### panic mode

Joined Oct 10, 2011
2,887
<deleted>

sorry... did not realize this was homework section

this is what internal connections inside breadboard look like (orange lines)
plan to put IC in the middle so that each of 8 pins is on separate circuit.
plan on paper helps
arrange parts so that they do not cross and have some room around them
then populate board by placing IC first, then jumpers, then other parts (low parts first)
good luck

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Joined Jul 18, 2013
28,831
How much experience have you had so far with bread board circuits,? Is this maybe your first?
Do you have a multi-meter to do a little trouble shooting?

Joined Nov 16, 2022
7
<deleted>

sorry... did not realize this was homework section

this is what internal connections inside breadboard look like (orange lines)
plan to put IC in the middle so that each of 8 pins is on separate circuit.
plan on paper helps
arrange parts so that they do not cross and have some room around them
then populate board by placing IC first, then jumpers, then other parts (low parts first)
good luck

View attachment 280838
I don't have my breadboard with me right now since I left it In School but here's my attempt on a simulator.

Joined Nov 16, 2022
7
How much experience have you had so far with bread board circuits,? Is this maybe your first?
Do you have a multi-meter to do a little trouble shooting?
I don't have that much experience I'm still very much a beginner

#### ericgibbs

Joined Jan 29, 2010
19,132
I don't have that much experience I'm still very much a beginner
No voltmeter, so a simple option.

Make up a test tool using a 1K resistor and an LED in series.
Using that tool will enable you to get an 'indication' of the state of the 741 pins.
E

Corrected my error on the LED orientation.

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#### panic mode

Joined Oct 10, 2011
2,887
first of all your board shows only 4 resistors, not 5. R2 is missing.
function generator is not supposed to get connected directly to IC. it should connect to C2
C3 need to connect to output of the IC, not input
C2 polarity is wrong

#### panic mode

Joined Oct 10, 2011
2,887
Make up a test tool using a 1K resistor and an LED in series.
that will work for low impedance circuits but ot so good for OpAmp inputs. also the LED should be connected the other way around.

#### ericgibbs

Joined Jan 29, 2010
19,132
Hi.
I did say 'indication' of the 741 pins, not an absolute measurement, what do you suggest a Fluke DVM.?
E