Re: Power Supply Design
- From: "Ancient_Hacker" <grg2@xxxxxxxxxxx>
- Date: 24 Jan 2006 06:09:04 -0800
You need two diodes, your basic 1 amp 1N4007's will do just fine.
And you need a capacitor of about 1/20th the microfarads of your large
capacitor.
hook them up like this:
small capacitor minus lead to the hot lead of the AC line, (use a
polarized line cord, the hot wire is the one that goes to the NARROW
prong.)
The plus lead of the capacitor to the cathode (bar) end of diode #1.
Also hook the anode (triangle) end of diode #2 to this point.
Other end of diode #1 (the triangleend) to the neutral AC line wire
(the wide prong).
The cathode of diode #2 goes to the PLUS side of the capacitor you wish
to charge.
other side of the big cap goes to AC line neutral (as does the cathode
end of diode #1.
---
Now BE VERY CAREFUL!
You have a deadly contraption there.
For safety, please put a 220K resistor and neon bulb across each
capacitor, to warn you that there's dangerous voltages there.
( The small capacitor ensures a nice gradual charge without current
surges).
Also what are you doing with these caps? Not tossing them at people I
hope.
.
- References:
- Power Supply Design
- From: Brian
- Power Supply Design
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