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Convert 0..5v PWM to 6,5..11,5v
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Zero999:

--- Quote from: Jan Audio on December 28, 2018, 02:51:29 pm ---@Zero your circuit is wrong, the PIC16 can not have more then exact 10K for impedance, it can charge not decharge, pulldown resistors required.
--- End quote ---
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:

--- Quote from: Zero999 on December 28, 2018, 03:28:51 pm ---Please note that this isn't a free electronic design service:

--- End quote ---

Yes it is, and by helping you learn.

No pulldown resistor needed in your circuit then ?
Zero999:

--- Quote from: Jan Audio on December 28, 2018, 04:27:37 pm ---
--- Quote from: Zero999 on December 28, 2018, 03:28:51 pm ---Please note that this isn't a free electronic design service:

--- End quote ---

Yes it is, and by helping you learn.

No pulldown resistor needed in your circuit then ?

--- End quote ---
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:

--- Quote from: Jan Audio on December 28, 2018, 05:12:33 pm ---Dont give something if you dont like to do so, dont complain afterwards.
Free electronic design service : very nice.

--- End quote ---

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