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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Help with power supply
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Taller de Teknologia Libr



Joined: Jul 11, 2018
Posts: 4
Location: Chile
PostPosted: Sun Jul 07, 2019 6:37 pm    Post subject: Help with power supply
Subject description: 40106 burned after coneccting to ac/dc adaptor		 Reply with quote  Mark this post and the followings unread
Hi , i`m building some 40106 oscilators and i soldered an ac/dc conector directly to the board and ended up burning it. Could you give me some advice , i want to remove the 9v battery powe supply and power it up from the adaptor , do i have to build a power supply or something like that , would apreciate some help.ç
Thanks and excuse my english not my primary language.
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RF



Joined: Mar 23, 2007
Posts: 1502
Location: Northern Minnesota, USA
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PostPosted: Mon Jul 08, 2019 5:55 pm    Post subject: Reply with quote  Mark this post and the followings unread
A 7809 voltage regulator and a few capacitors is all it takes - search MFOS wall wart power supply.
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PHOBoS



Joined: Jan 14, 2010
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PostPosted: Tue Jul 09, 2019 11:59 am    Post subject: Re: Help with power supply
Subject description: 40106 burned after coneccting to ac/dc adaptor		 Reply with quote  Mark this post and the followings unread
Taller de Teknologia Libr wrote:
Hi , i`m building some 40106 oscilators and i soldered an ac/dc conector directly to the board and ended up burning it.

the board, the connector or the chip ?
If you burned the chip than make sure you use a DC adapter, the polarity is correct and the voltage isn't too high (< 18V).
A voltage regulator might not be needed depending on the adapter you use.
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