[GreenKeys] Eico EC 700 - Re: Loop supply, or are we still beating out wifes and kicking the dog

[Jeff Albrecht]

On 5/25/2016 12:40 PM, Ralph Mowery wrote:
>
> I received a board in from Ebay that will convert about 10 volts to 30 
> volts up to about 60 to 90 volts.  I was able to get about 95 volts 
> out of the one I bought.
>
> It is almost like a DC transformer in that the higher the input 
> voltage the less current it will take to produce the same high voltage 
> out.
>

I bought a couple of these DC buck converters a while ago too. In a 
drawer I found what may have been my first soldered kit. Check it out 
it's an Eico EC 700 Mystifier. Random blinking neon bulbs. 
http://retrowagon.org/wiki/index.php/Eico_EC_700

Some NE2 neon bulbs, resistors and capacitors. Back in the day I powered 
it from a really long narrow 90 volt 'B' battery. They aren't 
manufactured anymore.

These inexpensive buck converters are handy for powering Vacuum 
fluorescent display (VFDs) projects too.

  - jeffa

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