I'm still new to electronics as I only developed the interest about one year ago. Your clear and concise videos have been such a big help. Thanks!

@AllAmericanFiveRadio

4 жыл бұрын

Hi Andrew You might be interested in the Navy's Training Course, it is very good. Navy Electricity and Electronics Training Series www.richardmcwhorter.com/NavyTraining/

@midmodaudio6576

Жыл бұрын

@@AllAmericanFiveRadio thank you for the link ! I'm a Navy veteran : )

Hi, i love the way you explain electronics.

Great, I was looking for the reason why the two diodes thank you very much

@AllAmericanFiveRadio

3 жыл бұрын

Glad the video helped. Thanks for your comment.

Thank you very much. Great explanation

Thanks so much. This explains a topic that has bugged me for years.

Good topic, and nice job on presentation. In audiophile circuits, one sometimes sees another type of diode being used in those locations: LEDs. LEDs tend to be less noisy than the std. diodes.

@AllAmericanFiveRadio

9 жыл бұрын

+h0ll0wm9n Thanks

Very interesting. Thank you for showing us what you discovered.

@AllAmericanFiveRadio

7 жыл бұрын

Thanks

Thank you for another very well done and explained video Rick.

@AllAmericanFiveRadio

9 жыл бұрын

+Bobby Tectalabyss Thanks

thank you very much for all these vidéos

@AllAmericanFiveRadio

8 жыл бұрын

Thanks

Thank you very much. I love your videos.

@AllAmericanFiveRadio

4 жыл бұрын

Thanks!

Very well explained thanks for sharing Now I’m left wondering if the resistor would work as well without the balanced power supply etc probably should try that. And another test I’d like to try is 4 diodes same configuration but move the NPN driver output to the center of the 4 so 2 above 2 below.

@AllAmericanFiveRadio

4 жыл бұрын

Thanks, and your welcome.

Great you video thank you

@AllAmericanFiveRadio

3 жыл бұрын

Thank you

Howdy. Very nice. Some may wonder why the 10 ohm emitter resistors. When the transistors warm up the B-E junction threshold voltage drops increasing the idle current. The voltage drop over the 10 ohms increases decreasing the bias current. The idle current will stabilize. To get more power the 10 ohms may be replaced with smaller values but not too small. The emitter resistor voltage drop increase must always be larger than the junction voltage voltage decrease running warm. Another way is to connect diodes in parallel with the 10 ohms. They will pass high power currents but not interfere with the thermal stabilization running idle. The trade-off is some introduction of distortion when the current commutes from the 10 ohms to the diodes. Another topic is that the upper transistor base can't climb up to full +12 V also limiting the available power. This problem may be overcome using a boostrapping circuit to elevate the base resistor potential. And again it is a trade-off. Bootstrapping means uneven loading of the push-pull also introducing some distortion. Regards.

@AllAmericanFiveRadio

Жыл бұрын

Thank You.

@AllAmericanFiveRadio

Жыл бұрын

And thanks for the information.

This was extremely helpful!! Thanks so much Rick. -Ragnar

thank you for another great video. now that I have learned new stuff the last month, I really want to get an oscilliscope for sure.

@AllAmericanFiveRadio

5 жыл бұрын

Thanks

That was interesting Rick, thanks. Also I noticed you are getting some use out of your new pc scope.......Carl

@AllAmericanFiveRadio

9 жыл бұрын

+skycarl Thanks Yes the PC oscilloscope has been working out quite well. It makes it real easy to capture pictures or videos. Trying to take a picture of an analog oscilloscope or a video of an analog oscilloscope is a real pain. I'll bet in a year or so they'll be a newer model PC scope with higher resolution, more features, and for about the same money.

Great video ! Thanks so much.

Why is the the base of first transistor tied to the emitter junction of the push pull stage? Is it something to do with feedback to keep the first stage biased properly?

@AllAmericanFiveRadio

4 жыл бұрын

The first transistor drives the two output transistors and the two emitter are bias and negative feedback

as always very informative and interesting.

@AllAmericanFiveRadio

9 жыл бұрын

+billybonewhacker Thanks

The schottky diodes are indicated to correct crossover distortion?

@AllAmericanFiveRadio

6 ай бұрын

Good

Great video, explained in a easy way, sir one thing I want to know, in place of oscilloscope, which application you have used to see the wave form

@AllAmericanFiveRadio

3 жыл бұрын

Thanks for your comment. This is the oscilloscope I used. Hantek 6022BE PC Based USB Digital Oscilloscope kzread.info/dash/bejne/oIVkj9R9Y5zfprg.html

@kamleshchavan7451

3 жыл бұрын

@@AllAmericanFiveRadio 👌ok

Very good explanation 😃

@AllAmericanFiveRadio

6 жыл бұрын

Thanks

Thank you for the explanation however it's not very clear how having the diodes will solve the problem.

@AllAmericanFiveRadio

3 жыл бұрын

It is interesting. Think about the 0.6 forward bias of each EB junction of the transistors and the two diodes. 0.6 X 4

Can you tell us about the feedback resistor design considerations used from output to input?

@AllAmericanFiveRadio

3 жыл бұрын

That is negative feedback designed to produce a more frequency flat response from that amplifier section. I have had amplifiers that had negative feedback at each section of the amplifier.

thank you very much, that made good sense.

@AllAmericanFiveRadio

4 жыл бұрын

Glad you found the video useful. Thanks

this is very interesting! Thanks for the video

@AllAmericanFiveRadio

9 жыл бұрын

+Chris Shippam Thanks

finally I got an explanation about this

@AllAmericanFiveRadio

4 жыл бұрын

Your welcome!

What was the input signal consist of? I meant what was the input? A function generator or a PWM?

@AllAmericanFiveRadio

9 жыл бұрын

+De Sean Chambers Thanks The input is an audio generator at a Thousand Hertz

Thank you so much!

@AllAmericanFiveRadio

9 жыл бұрын

+Ali Hajinasiri Thanks

what about a resister and diode in parallel?

@AllAmericanFiveRadio

9 жыл бұрын

+Elios0000 Thanks You could use diodes and resistors in parallel, this would reduce the compensating effect of the diodes also temperature compensation. But that may be desirable depending on the purpose of your circuit.

thanks for explanation

@AllAmericanFiveRadio

4 ай бұрын

Thank you.

thanks a lot for the video... could you leave a link for simulator so i can download and use it

@AllAmericanFiveRadio

7 ай бұрын

Thank you, and your welcome.