Does anyone else find it really annoying when someone asks for help on a project with seemingly arbitrary restrictions with no explanation?

Because I like discrete components transistors, resistors, capacitors, inductors and diodes and i want to make everything out of them including microcontroller and all ics functions and all opamp functions. You should note this because this might be last time i explain this. I don't like to repeat myself over and over again each time different posts

 

So you do the easy part of designing a standard two-transistor multivibrator, and want us to do the hard part of making it into a voltage-controlled circuit, with those strange restrictions on the types of parts that can be used.
Sorry, but I'm wasting my time on that.

I guess you just dont know how to do it. Because if you did you wouldnt have said this.

Anyways then i did be wasting time with all my posts with you because i like discrete components transistor, resistor, capacitor, inductor and thats all you need know. You should note that. I dont like repeating each time different posts.

Perhaps people like you make this forum even less popular.

 

I didn't get an answer to my question in post #14 of how much current this project will draw from the 9 volt battery.
Also what type of 9 volt battery?
There may be other options that might work better.

 

The reason that the question about schoolwork is asked is that there is a separate section for that in this site, and also because of the similarity of the request for assistance to many schoolwork questions.
So while the TS may find it annoying, there is a very valid reason for it happening.

 

I didn't get an answer to my question in post #14 of how much current this project will draw from the 9 volt battery.
Also what type of 9 volt battery?
There may be other options that might work better.

The load draws about 200mA at 4.7vdc. Its 9V rechargeable battery

 

The load draws about 200mA at 4.7vdc. Its 9V rechargeable battery

Did you mean at 5.7 volts?
What type of rechargeable battery?

 

Did you mean at 5.7 volts?

No the load rquires 4.7vdc at 200ma. I have diode in place between 5.7v output and load and some resistor. You see my 9vdc battery circuit is Or with another power supply thus the diode. The another power supply is my primary supply but 9V battery is backup supply.

 

Because I like discrete components transistors, resistors, capacitors, inductors and diodes and i want to make everything out of them including microcontroller and all ics functions and all opamp functions. You should note this because this might be last time i explain this. I don't like to repeat myself over and over again each time different posts

Maybe you could put some of the things you dislike repeating in your signature.

 

How low can the battery discharge to maintain the 4.7 volts at 200ma?
The primary supply and battery are powering the buck converter correct?

 

How low can the battery discharge to maintain the 4.7 volts at 200ma?
The primary supply and battery are powering the buck converter correct?

With buck booster converter in place not sure

 

Apparently this is a buck converter of your own design?
Doesn't appear to very efficient as the astable oscillator alone draws 90ma at 9 volts.
Can you elaborate more on this buck converter?

 

Apparently this is a buck converter of your own design?
Doesn't appear to very efficient as the astable oscillator alone draws 90ma at 9 volts.
Can you elaborate more on this buck converter?

Buck boost is Pretty much whats shown on post #6 vout range: one transistor, one indictor, one capacitor, one resistor

 

Because I like discrete components transistors, resistors, capacitors, inductors and diodes and i want to make everything out of them including microcontroller and all ics functions and all opamp functions. You should note this because this might be last time i explain this. I don't like to repeat myself over and over again each time different posts

You have your preferences, I have mine. I prefer to help people achieve good results with the simplest design that I know of. If that includes microcontrollers, opamps, or a ‘555, I will recommend that. If someone else suggests a circuit with a chip I didn’t know about, I will be grateful for the learning.

I also prefer not to waste my time trying to juggle while handcuffed.

By all means, enjoy your hobby on your own terms.

 

Buck boost is Pretty much whats shown on post #6 vout range: one transistor, one indictor, one capacitor, one resistor

Still isn't efficient, would be better to use a low voltage dropout linear regulator which can be configured using transistors.

 

Still isn't efficient, would be better to use a low voltage dropout linear regulator which can be configured using transistors.

I am not sure how to build low voltage linear regulator from transistors?? Also what would that replace and where would that be connected to?

 

It replaces your entire circuit and is set at 4.7 volt output.
I have a design I can post later today.
Still need to know the specs on the battery .

 

It replaces your entire circuit and is set at 4.7 volt output.
I have a design I can post later today.
Still need to know the specs on the battery .

Here you go:

https://www.walmart.com/ip/EBL-3-Pack-600mAh-9V-Li-ion-Rechargeable-Battery/478027775

 

To reaffirm the load draws 200ma at 4.7 volts, correct?
Is that a constant load?

 

To reaffirm the load draws 200ma at 4.7 volts, correct?

Yes

 

https://www.romanblack.com/smps/smps.htm