user7313: What is maximum voltage PWM pins can give?
can i give a vcc to 14v?

user60702: +5V
I understand for higher power people driving motors trigger a MOSFET transister which normally can go to 30 volts but this unit here appears to be able to switch 100 volts: https://www.banggood.com/100V-9_4A-FR120N-Isolated-MOSFET-MOS-Tube-FET-Relay-Module-For-Arduino-p-1396252.html this unit is likely to be able handle up to 50 Khz switching frequency (based on the regular MOSFET switching speed). Anything higher you'd need GaN (Gallium Nitride) transisters as used in Class D audio amps. Anyhow 100 volts and 9.4 amps would be 940 watts of DC, or maybe 664 watts of RMS sine wave (ball park), probably I would not trust more than 300 watts through that thing mind.

user42: On a typical Arduino board, PWM pins will theoretically only ever operate at ground (+0v) or Vcc (typically +5v). PWM is a square wave, which means it alternates rapidly between those two values, aka LOW and HIGH.
With that said, if you run it with a 50% duty cycle, then the average voltage over several cycles will work out as 50% of Vcc (i.e. typically 2.5v). The same applies to other percentages. It's important to note that it's not equivalent to a 'true' analog signal though, and shouldn't be used as such.
As a side note, there are some modified Arduino clones which have a voltage selection switch. These typically let the pins operate at either 3.3v or 5v, and should affect PWM (as far as I know).

user368: Since PWM pins are digital outputs, the maximum output voltage is VCC.

7313: <p>What is maximum voltage PWM pins can give?
can i give a vcc to 14v?</p>
 60702: <p>+5V</p>

<p>I understand for higher power people driving motors trigger a MOSFET transister which normally can go to 30 volts but this unit here appears to be able to switch 100 volts: <a href="https://www.banggood.com/100V-9_4A-FR120N-Isolated-MOSFET-MOS-Tube-FET-Relay-Module-For-Arduino-p-1396252.html" rel="nofollow noreferrer">https://www.banggood.com/100V-9_4A-FR120N-Isolated-MOSFET-MOS-Tube-FET-Relay-Module-For-Arduino-p-1396252.html</a> this unit is likely to be able handle up to 50 Khz switching frequency (based on the regular MOSFET switching speed). Anything higher you'd need GaN (Gallium Nitride) transisters as used in Class D audio amps. Anyhow 100 volts and 9.4 amps would be 940 watts of DC, or maybe 664 watts of RMS sine wave (ball park), probably I would not trust more than 300 watts through that thing mind.</p>
 42: <p>On a typical Arduino board, PWM pins will theoretically only ever operate at ground (+0v) or <code>Vcc</code> (typically +5v). PWM is a square wave, which means it alternates rapidly between those two values, aka <code>LOW</code> and <code>HIGH</code>.</p>

<p>With that said, if you run it with a 50% duty cycle, then the <strong>average</strong> voltage over several cycles will work out as 50% of <code>Vcc</code> (i.e. typically 2.5v). The same applies to other percentages. It's important to note that it's not equivalent to a 'true' analog signal though, and shouldn't be used as such.</p>

<p>As a side note, there are some modified Arduino clones which have a voltage selection switch. These typically let the pins operate at either 3.3v or 5v, and should affect PWM (as far as I know).</p>
 368: <p>Since PWM pins are digital outputs, the maximum output voltage is V<sub>CC</sub>.</p>
