[time-nuts] Low noise power supply recommendations
lists at rtty.us
Wed Jun 15 00:24:34 UTC 2011
Ni-cads are pretty low noise, reasonably stable, and close to the per cell voltage of the mercury cells. The gotcha is the self discharge rate. If you don't need a floating supply I suspect you can build up a " good enough" linear regulator to get things working.
On Jun 14, 2011, at 8:12 PM, "Will Matney" <xformer at citynet.net> wrote:
> I've thought about that, and also thought about the 24 volt battery packs
> used in those Schwinn scooters the kids have. I can buy a 24 volt charger
> cheap for those, but the batteries run about $60.00 each plus shipping, and
> they are probably rated at around 4 amp hours, I think. It may be the way I
> go, since I think they are Ni-Cad instead of lead-acid. The problem is, I
> wonder what type of noise any voltage regulators will cause in the circuit?
> *********** REPLY SEPARATOR ***********
> On 6/14/2011 at 8:01 PM Bob Camp wrote:
>> Ni-cads are a pretty good bet.
>> On Jun 14, 2011, at 7:02 PM, "Will Matney" <xformer at citynet.net> wrote:
>>> I am in need of a very clean 24 Vdc power source, to replace some old
>>> mercury cell batteries with. What would a good low noise, clean, power
>>> supply be in your recommendations? I thought of using two 12 Vdc
>>> batteries in series, and making a charging circuit with regulators, but
>>> am hoping to purchase a good used supply off ebay, etc. The old circuit
>>> used two 12 Vdc snap terminal mercury batteries in series, for 24 Vdc,
>>> along with a 7 Vdc mercury cell, and two plain AA carbon 1.5 Vdc
>>> in series for 3 volts. Any help and or ideas would be appreciated.
>>> time-nuts mailing list -- time-nuts at febo.com
>>> To unsubscribe, go to
>>> and follow the instructions there.
>> __________ Information from ESET Smart Security, version of virus
> signature database 5851 (20110206) __________
>> The message was checked by ESET Smart Security.
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
More information about the time-nuts