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Snubber Circuit

MannaMan86

Dec 9, 2013
19
Joined
Dec 9, 2013
Messages
19
I am trying to design a snubber circuit. I have a switching power supply which uses a LNK613 switch. My problem lies in the fact that when I power up an electric razor, I get an inductive kick, which messes up my power source. It spikes my voltage up and down, and I want to prevent it from going lower than 2.3V.
 

MannaMan86

Dec 9, 2013
19
Joined
Dec 9, 2013
Messages
19
I'm assuming it's the phenomenon of the inductive kick, since the switch is turning on/off and the inductive load (electric razor motor) resists the changing electric current and spikes the voltage up/down. I would like to design a snubber, but I don't know where to connect it to. Would I hook it up to the Drain and Source of the LNK613? Also, I cannot obtain values for snubber capacitance and snubber resistance. I have never done a snubber before.
 

Arouse1973

Adam
Dec 18, 2013
5,178
Joined
Dec 18, 2013
Messages
5,178
Put a back emf diode across the motor. Aslong as the motor only goes in the same direction. I think this will work.
 
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