[time-nuts] Parallel voltage regulators

Don Collie donmer at woosh.co.nz
Thu Oct 25 00:15:45 EDT 2007

Hi Tom,
    If you really want to regulate the oven`s supply voltage, my National 
Voltage Regulator handbook shows that the LM317T will supply over 2 Amps, 
with an input/output differential of between 5, and 12.5 Volts. A single one 
of these should do the job OK.
Cheers!,.................................Don Collie jnr.

----- Original Message ----- 
From: "Tom Clifton" <kc0vsj at yahoo.com>
To: <time-nuts at febo.com>
Sent: Thursday, October 25, 2007 12:33 PM
Subject: [time-nuts] Parallel voltage regulators

> ); SAEximRunCond expanded to false
> Errors-To: time-nuts-bounces+donmer=woosh.co.nz at febo.com RETRY
> A question for those that might know (or have an
> opinion)...  I have in hand an LPRO rubidium reference
> that requires 1.7 amps at 24 volts while the oven
> warms, dropping to 500ma while it runs.
> Can I parallel three or four 7824 TO220 style 1 amp
> regulators with a quarter ohm half watt equalizing
> resistor on the output of each one?
> At maximum load there would be a quarter volt drop
> across the resistors and the LPRO is stated to be ok
> running on 16 to 32 volts.
> Tom
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