[Milsurplus] : Re: PP-4763 and dynamotors

[Meir Ben-Dror WF2U]

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On Feb 13, 2021, 5:02 PM, at 5:02 PM, Meir Ben-Dror WF2U <wf2u at ws19ops.com> wrote:
>I used to use the PP-1104 with the DY-17/ART-13, the ATD and the GRC-19
>(I also have a second set with the  T-195B with LV and HV solid-state
>inverters I power up with a military surplus, RFI free Lambda 35 amp
>switcher), with the plain 2 dynamotor T-195. When the PP-1104 died - I
>got new replacement transistors for the old ones, some of which bit the
>dust of old age, but haven't replaced them yet - I bought a couple of
>surplus PP-8474/G 60 amp switching supplies which are made for
>communications equipment and are also RFI free, and tried them with the
>plain T-195 setup. They handle the surge just fine. The ammeter (60 amp
>full scale) pegs for a fraction of a second, and the dynamotors start
>up with no hesitation. Steady state current on AM is around 35 amps. I
>don't think that any model of  the ART-13/ATC dynamotors have more
>start-up surge than the 2 dynamotors in the T-195. The ATD dynamotor of
>course draws less. I haven't tried the ART-13/DY-17 yet with the
>PP-8474.
>
>I have the PP-4763 in the GRC-122 shelter with the GRC-106, but I
>haven't taken the GRC-19 (with the dynamotors) out there to try with
>that supply.
>
>73, Meir WF2U
>
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>
>On Feb 13, 2021, 3:20 PM, at 3:20 PM, Robert Goff
><robert.h.goff at gmail.com> wrote:
>>Hi Meir,
>>
>>I've got a few different things - ATC, ATD, TCS M-G set. PS won't
>>handle the inrush on any of them.
>>
>>On 2/13/21, Meir Ben-Dror WF2U <wf2u at ws19ops.com> wrote:
>>> Hi Robert,
>>>
>>> Which 28 V dynamotor are you attempting to start with the PP-4763?
>>>
>>> 73, Meir
>>>
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