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Old 28th February 2011, 09:20 AM   #1
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Question looow frequency osfillator wanted

All,

I'm interested in making a low freq oscillator (think less than 1Hz, about half or quarter Hz). Also, square wave is out, since I want to use it to smoothly pulsate a lightbulb or LED. Oh, and it would be very mucho cool if the circuit could include a timer to auto shut off. (to save batteries) (this is a lot to ask, I know.)

Oh, and it must be makeable from parts I can get here in the Netherlands.

P.s. While I don't have much experience with SS electronics, I have built a few tube guitar amps.
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Old 28th February 2011, 10:53 AM   #2
DF96 is offline DF96  England
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Phase shift oscillator (amp with voltage gain of 26(?) feeds three-stage RC network) or Wien bridge oscillator. Google will be your friend.
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Old 1st March 2011, 10:25 PM   #3
Ron E is offline Ron E  United States
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Location: USA, MN
look for a triangle wave generator circuit - simple ones abound
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