AC to DC conversion question

[gis]

Hi,

heres my dilema, I have a AC 12 V source which I need to convert to
about.......lets say, DC 5 volts I guess.

Anyone know how I can do this

 

[jriegle]

How much current?

 

[Bill Shymanski]

Such a dilema (or even dilemma). Hmm. Use the 12 V ac to boil water.
Collect the steam, direct into a piston engine. Belt the engine to a
water pump. Pump water up a hill to a large reservoir. Build a penstock
out of PVC pipe and direct it to a hydraulic turbine. Use the hydraulic
turbine to turn the shaft of a dc generator shaft. Regulate the output
of the generator with a carbon-pile stack connected to its field. You
can make the elements from the carbon pile stack by cutting disks out of
the centre rod of a common No. 6 dry cell.


If anyone knows a simpler way to accomplish this, I challenge you to
describe it.

Bill

( a few parameters would make this more of a proper engineering
question. Don't they sell those "101 Electronic Projects " books on
newstands for $3 any more? )

 

[repatch]

Such a dilema (or even dilemma). Hmm. Use the 12 V ac to boil water.
Collect the steam, direct into a piston engine. Belt the engine to a
water pump. Pump water up a hill to a large reservoir. Build a penstock
out of PVC pipe and direct it to a hydraulic turbine. Use the hydraulic
turbine to turn the shaft of a dc generator shaft. Regulate the output
of the generator with a carbon-pile stack connected to its field. You
can make the elements from the carbon pile stack by cutting disks out of
the centre rod of a common No. 6 dry cell.


If anyone knows a simpler way to accomplish this, I challenge you to
describe it.

I can't believe you'd be so irresponsible... You've COMPLETELY forgetten
the most important stage: hamster turing it's wheel. Sad, just sad! TTYL

 

[gis]

ok maybe 20 - 50 mA?

How much current?

 

[Ben Miller]

can make the elements from the carbon pile stack by cutting disks out of
the centre rod of a common No. 6 dry cell.

Boy did you date yourself! I'll bet the youngsters out there never saw one
of those. They don't exactly fit into a portable MP3 player!

Ben Miller

 

[zorin]

Boy did you date yourself! I'll bet the youngsters out there never saw one
of those. They don't exactly fit into a portable MP3 player!

I'm a youngster! (Well, 26 anyway).. and yes, I've never seen a No. 6
dry cell, but have heard of them. What exactly are they, and what are
(were?) they used in?

I'm only familiar with AA, AAA, C, D, N and the ever-handy
tongue-testable 9V. }

-Z

 

[repatch]

Attach a fuel cell to your butt; connect the fuel cell to a rechargable
battery. Every time you fart, the fuel cell produces current at the voltage
you wish and charges the battery...

Now THAT is original! Finally a REASON to fart!

 

[Louis Bybee]

I'm a youngster! (Well, 26 anyway).. and yes, I've never seen a No. 6
dry cell, but have heard of them. What exactly are they, and what are
(were?) they used in?

I'm only familiar with AA, AAA, C, D, N and the ever-handy
tongue-testable 9V. }

-Z

The were/are 1&1/2 volt dry cells about the size of a small thermos. Used
most often in groups for doorbell/call systems in old apt. bldgs. - larger
homes - etc., and other signaling uses. I have also seen (in the past) them
used for lighting infrequently used closets, and storage spaces in
combination with door switches.

They were also quite often used in training facilities for powering training
boards (switches, lights, and other devices) before low voltage power
supplies were commonly available.

I believe the chemistry was Zink Chloride?

Louis--*********************************************
Remove the two fish in address to respond

 

[John G]

Google found this and others
http://www.sizes.com/built/dry_cells.htm

 

[fishbulb]

AC/DC.....I always loved that band!

 

[Bill Shymanski]

A set of No. 6 cells would run your MP3 player for a long long time. I
once had a bunch of these for use with telephones - though of course not
telephones connected to the phone company.

A few weeks ago it occured to me that the portable set playing quietly
in the corner of my home office was possibly the first time my nephews
and nieces had ever seen a black-and-white TV.


To prove your antiquity, what are these: 50C5, 35W4, 12AU6,6BE6, 12AV6.


Bill

 

[Ben Miller]

To prove your antiquity, what are these: 50C5, 35W4, 12AU6,6BE6, 12AV6.

Those are modern vacuum tubes from an "all american five" radio circuit. I
restore sets that used some of the earliest ones.

Ben Miller

 

[Brian]

Do you school work yourself! If you do not pay attention in class, how do
you expect to make it in the real world?!?

 

[Ross Mac]

Such a dilema (or even dilemma). Hmm. Use the 12 V ac to boil water.
Collect the steam, direct into a piston engine. Belt the engine to a
water pump. Pump water up a hill to a large reservoir. Build a penstock
out of PVC pipe and direct it to a hydraulic turbine. Use the hydraulic
turbine to turn the shaft of a dc generator shaft. Regulate the output
of the generator with a carbon-pile stack connected to its field. You
can make the elements from the carbon pile stack by cutting disks out of
the centre rod of a common No. 6 dry cell.


If anyone knows a simpler way to accomplish this, I challenge you to
describe it.

Bill

( a few parameters would make this more of a proper engineering
question. Don't they sell those "101 Electronic Projects " books on
newstands for $3 any more? )

Sure your handle isn't Rube Goldberg???