looow frequency osfillator wanted

dutchmarco · 28th February 2011, 09:20 AM

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.

DF96 · 28th February 2011, 10:53 AM

Phase shift oscillator (amp with voltage gain of 26(?) feeds three-stage RC network) or Wien bridge oscillator. Google will be your friend.

Ron E · 1st March 2011, 10:25 PM

look for a triangle wave generator circuit - simple ones abound

28th February 2011, 09:20 AM	#1
dutchmarco diyAudio Member Join Date: Feb 2011	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.

1st March 2011, 10:25 PM	#3
Ron E diyAudio Member Join Date: Jun 2002 Location: USA, MN	look for a triangle wave generator circuit - simple ones abound __________________ Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. --Carl Sagan Science is a way of thinking much more than it is a body of knowledge. --Carl Sagan

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28th February 2011, 10:53 AM	#2
DF96 diyAudio Member Join Date: May 2007	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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