Sears Silvertone 12AU6 Heater XFMR

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CJ

Well-known member
GDIY Supporter
Joined
Jun 3, 2004
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15,728
Location
California
one of those widow maker boxes, Model 1419,

they rune a 120 VAC heater string but use a iso xfmr to heat the preamp tube, helps lessen the risk of electrocution by keeping the chassis away from the line voltage,


not very glamorous but one that we have not hacked,

comes in a box like this>
 

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and the primary, which has a bit thicker wire,  maybe more inrush current on the pri side, or they want the circuit breaker to flip when junior touches the toaster while he is playing or the xfmr shorts out,
 

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