[ARC5] Vibrator Power Supplies

[Peter Gottlieb]

An interesting read.  I note how the waveforms resemble that of a "stepped sine" 
UPS due to the dead time when the contacts are moving.

A stepped sine driven transformer driving a switch mode power supply is actually 
more efficient and results in lower SMPS diode temperatures than a pure sine 
inverter.

Those SMPS units have a pretty wide input voltage range and aren't very 
frequency sensitive (except for the EMI caps) so I bet a vibrator driven supply 
would do a pretty decent job running a modern computer!  That would be an 
interesting project...

Peter
kb2vtl


On 11/21/2017 10:59 AM, Robert Nickels wrote:
> 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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