No Voltage output in the simulation

[BillyTheBob]

Hi. I'm new, so, sorry for the mistakes I make (whether in the forum or when talking because I'm not that good at English).

I'm trying to replicate this circuit (from this link: https://headwizememorial.wordpress....e-ended-otl-amplifier-for-dynamic-headphones/) in Proteus to try to understand/see how things work etc.

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But for the second part of the power supply, there is no output voltage shown:

I tried to match every component as much as I could.
What can I do to have voltage output on C5(1) or is it supposed to look like that, what am I missing/did I miss?
I don't have a strong understanding of every component yet. Sorry if it wasn't relevant or was a very broad question.

tr1(p1) and tr2(p2) are 220 volt 60hz

 

[FvM]

I don't like simulators with input sources coming from nowhere. TR2 secondary voltage is however measured as NAN (not a number, e.g. float division by zero). Looks like a simulator bug, or very strange defined input voltage (e.g. DC voltage).

Perhaps there are some Proteus fans online who can tell if it's a known problem or how it's possible.

 

[BillyTheBob]

Hmm. I just realized that I was supposed to use polarized capacitors instead of normal ones I guess

Edit: No, still same

 

[FvM]

Can you show a screenshot of TR2 voltage supply and transformer definitions?

 

[KlausST]

Hi,

sometimes simulations have a problem with floating signals. Here: the output of TR2. A solution could be a high ohmic resistor to GND.

Klaus

 

[BillyTheBob]

Can you show a screenshot of TR2 voltage supply and transformer definitions?

It was tr2(p1), I just realized I wrote tr2(p2) in the first message instead

 

[FvM]

Transformer definition is wrong. Winding ratio has to be set by ratio of primary and secondary inductance L1/L2 = (n1/n2)^2. E.g. L1 = 8.1 H, L2 = 0.1 H
Coupling factor should be high, e.g. 0.99

 

[BillyTheBob]

I tried to debug step by step. Tried to change the bridge (I also just learned that 4-diode thing called bridge xD. I have a long way). I tried to clean everything else on the right of the transform. And started to add things one by one until I stopped getting Volts. It was the Voltage regulator. I was using ld1117D. But then I googled for "proteus linear voltage regulator simulate", and saw LM317 on one of the titles. So I tried it, and for now seems that there is at least some voltage (C11(1)), but not sure if it's the one that I should be getting.

Short: Changing the voltage regulator provided some voltage

 

[BillyTheBob]

Transformer definition is wrong. Winding ratio has to be set by ratio of primary and secondary inductance L1/L2 = (n1/n2)^2. E.g. L1 = 8.1 H, L2 = 0.1 H
Coupling factor should be high, e.g. 0.99

Does this look alright?
AC volts show 17.3-17.4V (17.2V with coupling factor 0.99) instead of 14.7V.
I'm just happy I have some voltage at least LOL.

 

[D.A.(Tony)Stewart]

"1/9" coupling factor may be both a syntax error if it does not support math functions" Thus "not a number"

and a functional error. (0.99 is closer to desired reality)

Why is Neutral or return not specified?

It ought to be a differential source with no ambiguous single-ended source , then you won't have to add a secondary ground = 0V ref to the schematic.

By the way( BTW), 220V 60 Hz is not a standard that I know for single ended to ground.

We have 120Vrms Line to Neutral (almost~0V) or 240 Vrms differential (line to line)= L1 to L2 using 60 Hz in North America coming from a split distribution transformer where it is earthed.

Which country is yours? You want use the same source for TR2 as TR1 AND must be shown on the schematic.

 

[BillyTheBob]

Why is Neutral or return not specified?

Sorry, I don't know what they are, to be honest. I am very very new, not just in the forum xD

By the way( BTW), 220V 60 Hz is not a standard that I know for single ended to ground.

I actually should adjust it for Germany. But the calculations on the website are probably made for wherever the person who designed them lives, so I just gave a bit of a random number. The person who designed the circuit says he got the components in the USA. So it should be 120V / 60Hz as you said, I guess.

 

[KlausST]

Hi,

Germany is 230V AC RMS (L-N), 50Hz.
(so none of your voltages and frequencies is correct)
And we use the three phase system with 120° shift phase to phase resulting in 400V AC RMS (L-L). Neutral is connected with Earth-GND.


Chaos.
As well as with your junction dots. Some are where they don´t belong, some are missing where they belong.
Usually the software sets them automatically to the right place.

Klaus

 

[BillyTheBob]

Germany is 230V AC RMS (L-N), 50Hz.
(so none of your voltages and frequencies is correct)
And we use the three phase system with 120° shift phase to phase resulting in 400V AC RMS (L-L). Neutral is connected with Earth-GND.

So, I should play with the transformer to have the same output voltage from the transformer to not touch any other component I guess. This way I'd have to deal with only 1 part. But not sure if it still would be efficient.

Chaos.
As well as with your junction dots. Some are where they don´t belong, some are missing where they belong.

You know, when I actually take a second look at it, it's quite funny actually lol xD. I didn't pay attention that much (1, I'm new, and didn't know I should (though being more in line/order is better for down the road), and 2 my main purpose is to play with things on the Proteus. But will try to be more careful next time. Thank you for pointing that out,