Tweakers' Asylum

RE: Are you sure ?

205.175.225.22

djk

In Reply to: RE: Are you sure ? posted by Chip647 on February 21, 2013 at 13:44:37

"then the cap is the way to go."
And your solution of a capacitor is going to help how?
The 2Ω inrush current limiter should do the trick, your capcitor will not.

Edits: 02/21/13

Follow Ups:

It suppresses the arching. (nt) - Chip647 07:34:15 02/22/13 (3)
- When you open the switch, not when you close it ! - djk 12:45:46 02/22/13 (2)
  When you open the switch, not when you close it !
  
  Most designs already have a cap, and a lot bigger value as well.
  - There is a spark when you close the switch as well. - Chip647 07:30:20 02/23/13 (1)
    Haven't you ever had a wall switch spark on you when you flip on a light switch?
    
    I use the glass Amperite delay/relay switches for some circuits. I can definitely tell you that they spark when thrown unless a cap is across them.
    
    What destroys the switch is the arch welding that happens when the switch is partially open. Reducing the current surge at start-up with a thermistor is helpful, but so is a cap and a properly designed switch. The $0.99 buggers that most manufacturers use are not appropriate.
    - RE: There is a spark when you close the switch as well. - djk 17:12:47 02/23/13 (0)
      I am not aware of a quality amplifier that does not already have an appropriate sized cap across the switch from the factory.

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