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Re: Curve Tracer 577 - Power Supply Overhaul


 

Hi Jack,
According to the specs the 0.093" Molex pins are rated for 17Amps so there is no problem with current or voltage drop.

Dennis Tillman W7PF

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Jack
Sent: Tuesday, November 13, 2018 11:00 AM
To: [email protected]
Subject: Re: [TekScopes] Curve Tracer 577 - Power Supply Overhaul

In a general sense Wolfgang, as I am not a specialist with
Tektronix...wiring p/s directly to the pcb may simply have been an assembly
convenience.
Factory introducing of connectors along the way for other leads may be to
increase technician convenience and reduce possible damage during board
service or replacement and to make easier the assembly-line wiring.

I can't see a technical reason against intervening in the power supply lead
situation particularly if you do not have to unsolder from the board.

Although I have no experience with the connectors you mention I wonder
whether power supply current could adversely heat them?; otherwise as there
here is no insertion loss or voltage drop enough to concern you...mains
supply variations would provide a greater 'drop' than such intervention as
you are considering. Safety from transformer voltages during service might
be reduced by any exposed connection 'along the way' to the pcb...again, I
am generalising.

My Regards

--
Jack



--
Dennis Tillman W7PF
TekScopes Moderator

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