# 3.3v pwm to 12v pwm **URL:** \ **Category:** Biometrics\ **Created:** [April 11, 2022, 1:11am UTC](https://community.sparkfun.com/t/3-3v-pwm-to-12v-pwm/43752 "2022-04-11T01:11:31Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![geoffkelland](https://avatars.discourse-cdn.com/v4/letter/g/7c8e57/32.png) [@geoffkelland](https://community.sparkfun.com/u/geoffkelland)\ **Post date:** [April 11, 2022, 1:11am UTC](https://community.sparkfun.com/t/3-3v-pwm-to-12v-pwm/43752/1 "2022-04-11T01:11:31Z")
Hi. In the end, I want a 12v PWM signal to drive a Solid State Relay (SSR) , which will drive a 12v pump motor and or a 12v fan. Giving the pump or fan a variable speed depending on the signal. But Arduino zero (fast 48MHz and 10bit) only outputs 3.3v PWM signal. Someone suggested to look at a logic level converter but the way I understood it was that it only deals with HIGH and LOW? Is there a product that can do what I want?.. Do I indeed NEED a 12v PWM signal to operate a 12v device? Will a 3.3v PWM at 100% duty cycle run the 12v motor at full speed???.. ---
**Author:** ![jremington](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/jremington/32/6595_2.png) [@jremington](https://community.sparkfun.com/u/jremington)\ **Post date:** [April 11, 2022, 2:08am UTC](https://community.sparkfun.com/t/3-3v-pwm-to-12v-pwm/43752/2 "2022-04-11T02:08:16Z")
> Do I indeed NEED a 12v PWM signal to operate a 12v device? Not with an SSR. A 3V logic signal is sufficient to turn most SSRs on. But do check the specifications for the one you have selected. ---
**Author:** ![geoffkelland](https://avatars.discourse-cdn.com/v4/letter/g/7c8e57/32.png) [@geoffkelland](https://community.sparkfun.com/u/geoffkelland)\ **Post date:** [April 11, 2022, 2:30am UTC](https://community.sparkfun.com/t/3-3v-pwm-to-12v-pwm/43752/3 "2022-04-11T02:30:26Z")
Thanks so much!!