Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ukma!tindle
From: tindle@ms.uky.edu (Ken Tindle)
Newsgroups: sci.electronics
Subject: Re: Need DC -> AC converter
Keywords: 12VDC to 12VAC
Message-ID: <11389@s.ms.uky.edu>
Date: 2 Apr 89 05:13:06 GMT
References: <5545@obdient.CHI.IL.US> <560@brambo.UUCP>
Reply-To: tindle@ms.uky.edu (Ken Tindle)
Followup-To: sci.electronics
Distribution: na
Organization: U of Kentucky, Mathematical Sciences
Lines: 23

In article <560@brambo.UUCP> wwg@brambo.UUCP (Warren W. Gay) writes:
]In article <5545@obdient.CHI.IL.US> bear@obdient.CHI.IL.US (Harry Skelton) writes:
]>I have a kit "clock" that I purchased the other day but due to the
]>unlisted design I was unaware that it required 12V AC rather than the
]>12V DC I was looking for...
]
]Probably the only need for AC stems from the need for a 60 Hz (cycle) 
]time base.  It will likely run on 12VDC if applied in the correct places,
[...]
]If you're prepared to do more
]work, I'm sure that others can provide you with directions for a crystal
]controlled time base.

Should be easy.  A color burst crystal, a couple 22pF caps, and a MM5369
17-stage oscillator.  Very accurate 60Hz just appears with this.

Chip version EST produces 100Hz. 

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INTERNET:tindle@ms.uky.edu | "I heard you." -Kirk 
BITNET:tindle@ukma.bitnet  | "He simply could not believe his ears."     
Ken Tindle - Lexington, KY | -Spock, The Trouble With Tribbles
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