Power supply positive-negative-ground from a single power supply

mome · 7th September 2011, 09:07 AM

I like to try different circuits. Using adapters as a power source. Which it has disadvantages be it can not turn on the negative power supply.
However, this circuit can supply both positive and negative.
This circuit is used IC number NE555 set up to stable multi vibrator.It produces a frequency rectangular patch of about 100 Hz.Out to pin 3 through C3 and C4. Before the rectifier power section. Both positive and negative DC 2 series.Positive power supply will work with the rectifier D1 and D2.When a positive signal to be via D2 to the output. And filtered from C5 to filter the pressure to smooth again...........Read more

kubeek · 7th September 2011, 10:47 AM

What What Whaaat?
If your goal is to make a noisy 100mA supply then go ahead and use it.

DF96 · 7th September 2011, 10:52 AM

Why are you taking bad circuits from another website and publicising them on here?

Mooly · 7th September 2011, 10:54 AM

These kind of circuits are great for learning though...

Tip, use high speed diodes (shottky) and increase the frequency to maximise efficiency.

It would easily supply a few opamps and could be filtered using a "capacitance multiplier". Correct ground returns for the diodes and caps are essential.

mome · 8th September 2011, 03:48 AM

Quote:

Originally Posted by Mooly

These kind of circuits are great for learning though...

Tip, use high speed diodes (shottky) and increase the frequency to maximise efficiency.

It would easily supply a few opamps and could be filtered using a "capacitance multiplier". Correct ground returns for the diodes and caps are essential.

Yes, These kind of circuits are great for learning.
But I wanted to know was published. If you do not know.

kubeek · 8th September 2011, 01:57 PM

Quote:

Originally Posted by mome

But I wanted to know was published. If you do not know.

What does this sentence mean?

! · 8th September 2011, 11:26 PM

When someone stops short and links to their website it is usually just an attempt to get website visitors for site ranking, advertising, etc.

Every post this member has made looks like an attempt to get people to visit wiparat . com

DF96 · 9th September 2011, 02:34 PM

. . and that just links to eleccircuit.com - I'm not sure what is going on here. Why would someone want to publicise bad circuits? Let's hope we don't all find ourselves part of a botnet in a few weeks time!

! · 9th September 2011, 05:17 PM

^ The attempt is (typically) to boost site ranking and draw in more visitors for the advertising displayed on the site, or profile tracking for later ad service. The site has two or three different trackers and a Google ad script.

7th September 2011, 09:07 AM	#1
mome diyAudio Member Join Date: Sep 2011 Location: Pattaya	Power supply positive-negative-ground from a single power supply I like to try different circuits. Using adapters as a power source. Which it has disadvantages be it can not turn on the negative power supply. However, this circuit can supply both positive and negative. This circuit is used IC number NE555 set up to stable multi vibrator.It produces a frequency rectangular patch of about 100 Hz.Out to pin 3 through C3 and C4. Before the rectifier power section. Both positive and negative DC 2 series.Positive power supply will work with the rectifier D1 and D2.When a positive signal to be via D2 to the output. And filtered from C5 to filter the pressure to smooth again...........Read more

7th September 2011, 10:54 AM	#4
Mooly diyAudio Member Join Date: Sep 2007	These kind of circuits are great for learning though... Tip, use high speed diodes (shottky) and increase the frequency to maximise efficiency. It would easily supply a few opamps and could be filtered using a "capacitance multiplier". Correct ground returns for the diodes and caps are essential. __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

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7th September 2011, 10:47 AM	#2
kubeek diyAudio Member Join Date: Dec 2005 Location: Prague, Czech Rep	What What Whaaat? If your goal is to make a noisy 100mA supply then go ahead and use it.

7th September 2011, 10:52 AM	#3
DF96 diyAudio Member Join Date: May 2007	Why are you taking bad circuits from another website and publicising them on here?

8th September 2011, 11:26 PM	#7
! diyAudio Member Join Date: Jun 2005 Location: Midwest	When someone stops short and links to their website it is usually just an attempt to get website visitors for site ranking, advertising, etc. Every post this member has made looks like an attempt to get people to visit wiparat . com

9th September 2011, 02:34 PM	#8
DF96 diyAudio Member Join Date: May 2007	. . and that just links to eleccircuit.com - I'm not sure what is going on here. Why would someone want to publicise bad circuits? Let's hope we don't all find ourselves part of a botnet in a few weeks time!

9th September 2011, 05:17 PM	#9
! diyAudio Member Join Date: Jun 2005 Location: Midwest	^ The attempt is (typically) to boost site ranking and draw in more visitors for the advertising displayed on the site, or profile tracking for later ad service. The site has two or three different trackers and a Google ad script.

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