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Thread: Power supply bigger than suited for tube?

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  1. 04-29-2018, 10:04 AM #1
    neo__04
    neo__04 is offline Registered
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    Power supply bigger than suited for tube?

    Hey all.

    I'm doing a build and will use a cheap 40w tube to get things up and running, when i have all the bugs ironed out i'll get a bigger laser in the range of 60-80w. If i buy an 80w power supply now, will i kill the 40w tube? Just trying not to buy 2 tube and 2 power supplies. Thanks!
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  2. 06-02-2018, 10:42 AM #2
    dgeorge
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    Re: Power supply bigger than suited for tube?

    Use Ammeter. Limit current by potentiometer on PSU to 18mA max. Have fun.
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  3. 06-13-2018, 02:31 PM #3
    ArtHeatSign
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    Re: Power supply bigger than suited for tube?

    Hello. Yeah, you can use the 80w power supply with the 40w tube. However, you'd need to use a potentiometer to control the voltage level. That will make it suitable for your tube.
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  4. 06-27-2018, 04:50 AM #4
    Art_HeatSign
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    Re: Power supply bigger than suited for tube?

    Quote Originally Posted by neo__04 View Post
    Hey all.

    I'm doing a build and will use a cheap 40w tube to get things up and running, when i have all the bugs ironed out i'll get a bigger laser in the range of 60-80w. If i buy an 80w power supply now, will i kill the 40w tube? Just trying not to buy 2 tube and 2 power supplies. Thanks!
    Hello.
    Yeah, you can use the 80w power supply with the 40w tube.
    However, you'd need to use a potentiometer to control the voltage level. That will make it suitable for your tube.
    Reply With Quote Reply With Quote
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