[ARC5] Vibrator Power Supplies

[Bob kb8tq]

Hi

Well, I can tell you that the normal vibrator supply typically had better reliability 
in the field than the early germanium based “transistor” supplies.

Bob

> On Nov 21, 2017, at 12:06 PM, Dave Jackson <cjack93907 at razzolink.com> wrote:
> 
> Thanks Bob. I've been curious as to how the vibrator design compares with
> the solid state MOSFET SMPS design as far as the contact life vs. sparking
> (with the corresponding contact erosion).  This will help answer my
> questions.
> 
> Sincerely,
> 
> Dave WA4OBJ
> 
> -----Original Message-----
> From: arc5-bounces at mailman.qth.net [mailto:arc5-bounces at mailman.qth.net] On
> Behalf Of Robert Nickels
> Sent: Tuesday, November 21, 2017 8:00 AM
> To: arc5 at mailman.qth.net
> Subject: Re: [ARC5] Vibrator Power Supplies
> 
> A lot of effort - both science and engineering - went into the design of the
> low-cost DC-DC converter of the early 20th century, aka the vibrator power
> supply.   As the leading manufacturer of vibrators,  P.R. Mallory Co. put
> out a comprehensive design manual in 1947 that may be of interest to anyone
> seeking to understand the design of such power
> supplies: www.tubebooks.org/Books/mallory_vibe.pdf
> 
> 73, Bob W9RAN
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