[ARC5] Vibrator Power Supplies

[Peter Gottlieb]

None of the switches or relays were explosion proof so I don’t think that was a real design concern. 


Peter

> On Nov 21, 2017, at 2:14 PM, kg4kgl at gmail.com wrote:
> 
> Col. Paul Tibbets in his (auto)biography said he smoked cigarettes while flying. He must have not been too worried about any gas fumes. 
> 
> Robert
> KG4KGL 
> 
>> On Nov 20, 2017, at 21:11, D C _Mac_ Macdonald <k2gkk at hotmail.com> wrote:
>> 
>> It just might have something to do with keeping devices that create sparks on make and break away from an environment with high octane gasoline fumes possible.
>> 73 de Mac, K2GKK/5 
>> (Since 30 Nov '53) 
>> Oklahoma City, OK 
>> USAF Retired 61-81 
>> FAA Retired 94-10
>> 
>> 
>> 
>> 
>>  
>> From: arc5-bounces at mailman.qth.net <arc5-bounces at mailman.qth.net> on behalf of J Mcvey via ARC5 <arc5 at mailman.qth.net>
>> Sent: Monday, November 20, 2017 19:32
>> To: Robert Eleazer; arc5 at mailman.qth.net
>> Subject: Re: [ARC5] Vibrator Power Supplies
>>  
>> They did use vibrators in a lot of WWII equipment. BC659/620 series and and BC1306 were just a few examples of that.
>> Why they didn't use them in aviation may have something to with the altitude and temperatures they may be exposed to?
>> 
>> 
>> On Monday, November 20, 2017 8:12 PM, Robert Eleazer <releazer at earthlink.net> wrote:
>> 
>> 
>> 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        
>> 
>> 	Virus-free. www.avg.com
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