Hello,
I do a lot of relay circuits that switch dc solenoids / motors. normally, to avoid having to grossly oversize the relay (b/c it is rated for a resistive load), a simple diode (know as a flyback i think) is placed across the relay / coil of the solenoid or motor to prevent the relay from failing prematureley. Works great. Here's the new problem: i've been asked to switch a motor load that is 120VAC. I need a similar solution, otherwise the relay is going to be bigger than the entire control solution. Thanks for any help.
I read this on wikipedia:
How does one know if an RC snubber is not adequate without testing to failure (10's of 1000's of cycles)
I do a lot of relay circuits that switch dc solenoids / motors. normally, to avoid having to grossly oversize the relay (b/c it is rated for a resistive load), a simple diode (know as a flyback i think) is placed across the relay / coil of the solenoid or motor to prevent the relay from failing prematureley. Works great. Here's the new problem: i've been asked to switch a motor load that is 120VAC. I need a similar solution, otherwise the relay is going to be bigger than the entire control solution. Thanks for any help.
I read this on wikipedia:
In AC circuits a rectifier diode snubber cannot be used; if a simple RC snubber is not adequate a more complex bidirectional snubber design must be used.
How does one know if an RC snubber is not adequate without testing to failure (10's of 1000's of cycles)
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