[Milsurplus] WTB Manuals and Power Supply Question

[John Schmitz]

Going back to my basic electronics days, it would seem that if load current
decreases (an increased load resistance and thus an increased RC time
constant) the filter caps would not discharge as much and thus maintain a
higher charge value (less ripple) thus compensating the reduced inductor
action on ripple at low load currents.

My 2 cents?

John


-----Original Message-----
From: milsurplus-bounces at mailman.qth.net
[mailto:milsurplus-bounces at mailman.qth.net]On Behalf Of Unserviceable but
Repairable
Sent: Thursday, September 30, 2004 10:43 AM
To: milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] WTB Manuals and Power Supply Question

> Capacitors work on voltage, chokes work on current.

Well, sorta.

Smoothing chokes have a gap so L same over wide range.

Swinging chokes have no gap & their L goes from hi to low as current
gets near max.

The bleeder R of a LC-filtered power supply with smoothing choke
ought to place that choke up into "flat line."

And that's just a few ma on a 200ma choke

My 2 ct.s

   Marty


...and the C oughta be picked to deliver load V within ripple-limits
   between rectifier pulses.

--i8UFcg53014649.1096558722/fracas.netboobie.org--


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