[ARC5] Vibrator Power Supplies

Tue Nov 21 15:07:50 EST 2017

In the 1960s we smoked in B-52s except during takeoff/climbout, refueling, and descent/landing.

D C "Mac" Macdonald
K2GKK/5 in OKC, OK
Since 30 Oct 1953
USAF & FAA, retired

On Nov 21, 2017, at 13:14, "kg4kgl at gmail.com<mailto:kg4kgl at gmail.com>" <kg4kgl at gmail.com<mailto: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<mailto: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

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From: arc5-bounces at mailman.qth.net<mailto:arc5-bounces at mailman.qth.net> <arc5-bounces at mailman.qth.net<mailto:arc5-bounces at mailman.qth.net>> on behalf of J Mcvey via ARC5 <arc5 at mailman.qth.net<mailto:arc5 at mailman.qth.net>>
Sent: Monday, November 20, 2017 19:32
To: Robert Eleazer; arc5 at mailman.qth.net<mailto: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<mailto: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

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