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

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An externally hosted image should be here but it was not working when we last tested it.


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
 
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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.
 
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.
 
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