Convert 0..5v PWM to 6,5..11,5v

[Zero999]

@Zero your circuit is wrong, the PIC16 can not have more then exact 10K for impedance, it can charge not decharge, pulldown resistors required.

My circuit is not wrong!

The load of the PIC impedance will have a lower, not an upper impedance limit. Post the datasheet for the PIC16.

You're connecting it to the output of the PIC, which is more than capable of driving 100k of impedance. Indeed it's better than SiliconWizard's circuit, in that it derives the reference from the regulated 5V rail, rather than 12V which presumably isn't that well regulated and has a Salen-Key filter which will give a smoother output. It also less accurate at meeting the 6.5V to 11.5V specification and requires the PIC to sink more current, than the circuit I posted, although this can easily be changed by altering the resistor values.

Please note that this isn't a free electronic design service: people contribute on a voluntary basis so be gracious even if you don't get exactly what you're looking for!

[Jan Audio]

Please note that this isn't a free electronic design service:

Yes it is, and by helping you learn.

No pulldown resistor needed in your circuit then ?

[Zero999]

Please note that this isn't a free electronic design service:

Yes it is, and by helping you learn.

No pulldown resistor needed in your circuit then ?

No this place is not a free electronics design service and I thought you were the one asking for help? I'm always willing to learn though. Please enlighten me, if I've missed something.

No pull-down resistor is required in my circuit. Why do you believe a pull-down resistor is necessary? A PIC can both sink, as well as source current.

If you're after a 6.5V output in the case of the PIC becoming disconnected, then you didn't specify that and SiliconWizard's circuit won't do that either.

[Jan Audio]

It has only 10 to the capacitor.
Note that 10K also can be to much.
Instead i use two 4K7 resistors with 2 capacitors.

Dont give something if you dont like to do so, dont complain afterwards.
Free electronic design service : very nice.

[ogden]

Dont give something if you dont like to do so, dont complain afterwards.
Free electronic design service : very nice.

Such attitude may backfire easily. Many seeing your arrogance may avoid to help you in the future. I am ignoring you from now.

[Zero999]

It has only 10 to the capacitor.
Note that 10K also can be to much.
Instead i use two 4K7 resistors with 2 capacitors.

Dont give something if you dont like to do so, dont complain afterwards.
Free electronic design service : very nice.

4k7 is a lower impedance which is worse.

Fine, it looks like you're the expert, post your brilliant design, or stop trolling.

[wraper]

Please note that this isn't a free electronic design service:

Yes it is, and by helping you learn.

The only thing we usually get by helping others is wasting out time with no benefit gained. FWIW if I spent all of the time helping others here to earn money instead, I'd get quite an additional income. More than most of the people earn on full time job where I live.

[Zero999]

I have learned from helping others, but that's normally the exception to the rule.

Normally I find it rewarding, but there are exceptions.

[Jan Audio]

Besides does a robot generate your circuits ?

Such attitude may backfire easily. Many seeing your arrogance may avoid to help you in the future. I am ignoring you from now.

No.

What does it mean then : not free electronic service ?, i,m not paying.
That is saying you dont want to give anything for free ?

[Simon]

Besides does a robot generate your circuits ?

Such attitude may backfire easily. Many seeing your arrogance may avoid to help you in the future. I am ignoring you from now.

No.

What does it mean then : not free electronic service ?, i,m not paying.
That is saying you dont want to give anything for free ?

You are missing several points. Perhaps you need to improve your attitude. This forum is not about users like you rocking up and making demands for help and being served a fully functional design. It is about talking about the various aspects of a problem / design / solution and helping you to help yourself in deciding the best way forward. If all you are going to do is demand help and reply with arrogance your days here if not your hours will be shortly numbered!

[ogden]

What does it mean then : not free electronic service ?, i,m not paying.
That is saying you dont want to give anything for free ?

There are many other "goods" besides money.
Yes - I do not like to help those who are ungrateful and disagreeable.

[wraper]

What does it mean then : not free electronic service ?, i,m not paying.
That is saying you dont want to give anything for free ?

There are many other "goods" besides money.
Yes - I do not like to help those who are ungrateful and disagreeable.

Same here. Already added Jan Audio to ignore list.