[Milsurplus] [ARC5] I Must Have Lost My Mind...

revcom at wbsnet.org revcom at wbsnet.org
Mon Aug 12 14:31:44 EDT 2019


When I worked for an area Generation/Transmission power company we used
a -Behlman-Ivar- variable power supply.  It delivered 50-150VAC at
20-1000Hz, 1000Watt from 120VAC/60Hz.  We used it for testing harmonic
sensitivity of protective relaying systems and when measuring ground
resistance on our 345KV transmission substations.  Sure was a nice box.
I tried to buy it when it got 'retired' (was old fashioned, used tubes!)
after I left, but alas, was told it got "recycled".  Be an ideal supply
for your application.

Rod
K0EQH



 I'm with Mike.  I'd like to run it "as designed."  However, the power
> supply has been modified,  but I haven't had the time to take it out of
> the truck and examine the mods.  No idea if it can be recovered to 800
> cycles.  We'll see.
>
> 73 Dave S.
>
>
> On 8/12/2019 10:53 AM, Michael Hanz wrote:
>> Because of the way the keying is designed in the GO-* and GP-* sets. 
>> With a relatively high frequency power source, the designers keyed the
>> primary (115vac) side of the high voltage supply, with only a 1Hy and
>> 2ufd filter capacitor needed.  You would have to come up with another
>> way of keying the transmitter if you didn't want to use 800Hz (or
>> higher...) primary power. People did, and if it's yours you can do
>> with it what you wish, but others consider it a challenge to get it to
>> work as intended. I fall into the latter group.
>>
>>  - Mike  KC4TOS
>>
>
> ---




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