[ARC5] Vibrator Power Supplies

[Scott Robinson]

Folks,

The Phillips head patent issued in 1936, for what that's worth.

My own suspicion--unsupported by any specific evidence--is that 
vibrators were thought to be unreliable. The fact that you can change 
one out in about 15 seconds seems not to have mattered.

/scott

On 11/20/17 11:36 PM, WA5CAB--- via ARC5 wrote:
> Neither vibrator power supplies nor Phillips head screws were anywhere 
> near new in 1945.  Vibrator supplies were used in small sets up to the 
> size of the BC-223-AX (pair of 801A's).  I'm not sure why relatively few 
> (but not no) aircraft sets used them.  And Collins used Phillips head 
> screws at least as far back as the TCS in 1940.
> 
> In a message dated 11/20/2017 16:12:13 PM Central Standard Time, 
> releazer at earthlink.net writes:
>> The 800 HZ discussions have led me to once more wonder about vibrator 
>> power supplies.  I have 1945 vintage Aviation magazines that have full 
>> page ads for this wonderful new invention (the same mags advertise 
>> something new called the Phillips Screw).  And I have an old Heathkit 
>> VP-1 vibrator power supply that produces 60 ma at 250V with a 12VDC 
>> input.  Let's see, now, do we know of any WWII aircraft electronics 
>> that require that kind of power?
>>
>> As far as higher power outputs I have the transformers from an RCA UHF 
>> Carfone I bought for $1.00 that are for a vibrator power supply.  I 
>> don't know how much power that can handle but it is probably far more 
>> than an SCR-522 or ARC-3 would require.  That set had 6146B's, I think
>>
>> So do we know why vibrator power supplies did not come out in the late 
>> 1930's and get used in WWII?
>>
>> Thanks,
>>
>> Wayne
>> WB5WSV
>>
>>
> 
> 
> Robert & Susan Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
> 
> 
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