Yes, I use AC.  Any voltage over about 7,000 will work fine with AC.
For low voltages only DC will work.

Marshall

Dennis Gulenchin wrote:

> Hello,
>
> I have purchased a Canadian maple leaf $5 coin and a1oz.silver bullion
> bar.
> I already have a 28vac converter from a garrett metal detector battery
> charger and was wondering if one can use a AC converter instead of DC
> currrent to make CS?
> Thanks. Dennis
>
>
> Acmeair wrote:
>
>> when on sale at harbor freight, small voltmeter that does milliamps.
>> put in
>> line with your system. i use either arrowhead distilled or kmart
>> distilled.
>> at startup, readings are usuall about .22 ma and 25.7 vdc . i run it
>> till i
>> read about 1.35 - 1.40 ma and around 28.2vdc. the batch has an
>> adequate
>> tyndall effect, no sludge and remains clear with no sludge. stirred
>> by
>> aquarium bubbler.  all done in a glass gallon jug.
>>
>> jim
>>
>> ----- Original Message -----
>> From: "David Bearrow" <[email protected]>
>> To: <[email protected]>
>> Sent: Friday, June 25, 2004 11:47 PM
>> Subject: RE: CS> Useful current limit circuit
>>
>>
>>
>> > Hi Wayne,
>> >
>> > Why not spend the $50 and get yourself a conductance meter?
>> >
>> > Dave
>> >
>> > At 09:02 AM 6/25/04, you wrote:
>> >    I would like to point out the disadvantages of the constant
>> > current.  Using constant current, the LED will not serve as a
>> > visual
>> > indicator of current flow which allows the rejection of inferior
>> > water.
>> >
>>
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