Hi Will, You could consider building your own power supply system for the replacement of the batteries. Use a separate power transformer which, I suspect, would be small as the current requirements would be low for driving a bridge circuit.
The main company to look toward for high quality, low noise regulators is Linear Technology. Here is a candidate part to look at : http://www.linear.com/product/LT3082 This is the lowest noise (33uv/10Hz to 100KHz) low dropout regulator that can handle regulating 24 volts and is adjustable, meaning use can use this part for all three voltages (i.e., three regulators). You will have to decide if it noise specs are suitable for your needs. Keep in mind that battery noise is typically random whereas the noise out of a regulated system tends to be constant. If you really think you need lower noise then you could consider an LT1000 shunt reference. Typically the circuit designs for LT1000 type devices are as references and lack current capability above about 10 milliamps. Adding additional current circuitry would add more noise. See: http://www.linear.com/product/LTZ1000 Bill....WB6BNQ Will Matney wrote: > Hello, > > 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 lead-acid > batteries in series, and making a charging circuit with regulators, but I > 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 batteries > in series for 3 volts. Any help and or ideas would be appreciated. > > Thanks > > Will > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
