Is there any particular reason this won't work? Thanks

[(*steve*)]

What chapter do you suggest I start at by the way? What topic?

I don't know the book, so I have no idea. However the indications are that you may have read earlier chapters but not understood them. Does the book have any quizes?

Do you know what resistance you get if a 10k and a 1 k resistor are in parallel?

If a 10k and a 1k resistor are connected in series across a 9V battery with the 1k resistor connected to the negative terminal (which we shall call 0V), what is the voltage at the junction of the resistors when compared to 0V?

what current flows through a 1uF capacitor with 9.5 volts applied to it?

 

[(*steve*)]

OMG! the 2N2222 relaxation oscillator. That poor 2N2222. I hope you gave it a good funeral.

Perhaps you should have started with something that involves actual transistor action and doesn't destroy the device.

 

[Bluepoint SEO]

If I can remember the formula 1k x 10k / 1k + 10k.

For a voltage divider Vo = Vi . (R2)/(R1+R2) so 9V * 1k/(10K+1K) = 0.81V?

9.5*10-6 amp?

 

[Bluepoint SEO]

OMG! the 2N2222 relaxation oscillator. That poor 2N2222. I hope you gave it a good funeral.

Perhaps you should have started with something that involves actual transistor action and doesn't destroy the device.

It's in my art journal don't worry, gone but not forgotten

 

[Bluepoint SEO]

It's in my art journal don't worry, gone but not forgotten

Literally super glued in to me book

 

[ramussons]

View attachment 29523
If the components of the correct values of course. Thanks guys.

As far as I see, the Collectors of both the Transistors are DC grounded thru' the transformer T1 and the Choke L1 - means that the Vce = 0.

Will the transistors ever operate in this condition?

 

[Arouse1973]

Ok so I had a quick look at this. First thing is what will your supply voltage be across the first transistor? So I tried to keep as much the same as your original circuit and moved a few things about.



So we have something on the output, is this circuit working at all?



Adam

 

[Bluepoint SEO]

Hi Adam, I look at the graph and try to figure how you've created it but I'm sure you can teach me another day.

It's become difficult my 1 transformer and 1 inductor has exploded into all sorts of things (still 3 inductors though).

It is working though and because we have the correct number of troughs and peaks over time though I'm not entirely sure I see what's going on.


Dave

 

[Bluepoint SEO]

If I can remember the formula 1k x 10k / 1k + 10k.

For a voltage divider Vo = Vi . (R2)/(R1+R2) so 9V * 1k/(10K+1K) = 0.81V?

9.5*10-6 amp?

Right on this at all?

 

[Arouse1973]

Hi Adam, I look at the graph and try to figure how you've created it but I'm sure you can teach me another day.

It's become difficult my 1 transformer and 1 inductor has exploded into all sorts of things (still 3 inductors though).

It is working though and because we have the correct number of troughs and peaks over time though I'm not entirely sure I see what's going on.


Dave

Hi Adam, I look at the graph and try to figure how you've created it but I'm sure you can teach me another day.

It's become difficult my 1 transformer and 1 inductor has exploded into all sorts of things (still 3 inductors though).

It is working though and because we have the correct number of troughs and peaks over time though I'm not entirely sure I see what's going on.


Dave

Hi Dave. I simulated it in LTspice thats all.
Adam

 

[Arouse1973]

Hi Adam, I look at the graph and try to figure how you've created it but I'm sure you can teach me another day.

It's become difficult my 1 transformer and 1 inductor has exploded into all sorts of things (still 3 inductors though).

It is working though and because we have the correct number of troughs and peaks over time though I'm not entirely sure I see what's going on.


Dave

Loòk at the voltage, see how small the signal is. Sorry to let you down Its not working mate. Where is this small voltage coming from?
Adam

 

[ramussons]

Ok so I had a quick look at this. First thing is what will your supply voltage be across the first transistor? So I tried to keep as much the same as your original circuit and moved a few things about.

View attachment 29545

So we have something on the output, is this circuit working at all?

View attachment 29546

Adam

Can you please explain the purpose of R1 and R3?

 

[Arouse1973]

Can you please explain the purpose of R1 and R3?

You need to ask Dave that one. But I say not a lot lol.
Adam

 

[(*steve*)]

Right on this at all?

The last one is wrong.

You are right on the resistor questions, but you need to go back and look at what capacitors do again.

 

[Bluepoint SEO]

Lol admiration to all electronic geeks out there.