[NJARC] AC for filaments?

[w2wiq1 at juno.com]

STEVE:

RAY IS CORRECT.

WALL-WARTS WOULD HAVE TO BE MUCH MORE THAN 1.25 AMPS.
ALSO THEY ARE UNFILTERED DC WHICH CAN INDUCE HUM.
PLUS THE OUTPUT IS A HIGHER THAN MARKED VOLTAGE DEPENDING ON THE LOAD CURRENT.
YOU WOULD HAVE TO ADD A LARGE ELECTROLYTIC CAPACITOR FOR FILTERING.
YOU COULD USE IT WITH A VARIAC TO CONTROL THE OUTPUT VOLTAGE,BUT NOTE MY REMARKS.

WALTER-W2WIQ



---------- Original Message ----------
From: <sgt88 at atlanticbb.net>
To: <njarc at mailman.qth.net>
Subject: [NJARC] AC for filaments?
Date: Tue, 19 Mar 2013 09:33:58 -0400

Just remember
Reply = Poster
Reply All = Everyone

_________________________________________________________
I read that 60 cycle hum can show up...got an AC-out 'wall wart' I can use 
for my 201's and 301's...

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