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Type: Posts; User: Rattanee

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  1. Closed: Re: Anyone know a reliable AC-DC standby powersupply? Transformerless? (Details in po

    Yeah the capacitor life expectancy is what had me worried as the caps in such a circuit seem to be worked much harder then in any transformer based solution. But since I gave up on space saving (the...
  2. Closed: Re: Anyone know a reliable AC-DC standby powersupply? Transformerless? (Details in po

    Thanks for the replies guys. I realize that there's going to be current drawn either way, I just wanted to minimize it and save space as much as possible. Though due to some newly discovered facts I...
  3. Sticky: Re: Everything you wanted to know about soldering and desoldering but were afraid to

    I know this isn't a very recent post, but practice provides the best solutions so I thought I'd share.

    In such a situation, my solution is to use a hot-air station in tandem with my desoldering...
  4. Closed: Anyone know a reliable AC-DC standby powersupply? Transformerless? (Details in post)

    Hey guys,

    I'm building a project that would require a small powersource that supplies constant 12V to a relay that is switched via an optocoupler from another circuit. Technically something like...
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    Closed: Re: Help with dual voltage PS design

    That's weird, it works fine for me.
    It's quite possible that the 7805 blew, but the problem isn't with that. I'm just not getting the DC voltages that I would expect to have and I have no clue...
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    729

    Closed: Help with dual voltage PS design

    Hey guys, I'd like to ask for a little help regarding building a dual voltage powersupply.

    A little background:
    Since I have tons of arcade parts lying around, I decided to do something...
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