Long story, but some of my parts for a reflow oven have arrived, but I think I can get it done with my remaining parts. I know a standard relay can't directly switch a PWM signal, but if I have one SSR controlling the PWM signal, and three magnetic relay downstream of that to control three seperate heaters, there shouldn't be a problem with the PWM flowing through the magetic relays, right?
Said another way, the SSR will handle the PID/pwm and the three relays will be turned on or off based on how fast the heat needs to rise in that section of the heat profile.
To my understanding, arcing of magnetic relays is caused when the contacts are close, but not touching. Would sending a PWM signal through a closed relay cause any issues?
Said another way, the SSR will handle the PID/pwm and the three relays will be turned on or off based on how fast the heat needs to rise in that section of the heat profile.
To my understanding, arcing of magnetic relays is caused when the contacts are close, but not touching. Would sending a PWM signal through a closed relay cause any issues?
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