29-01-2017, 11:43 AM
To minimise hum with parallel connected AC heaters, the low voltage secondary is sometimes centre tapped with the centre tap earthed, thus giving 3.15V - 0 - 3.15V rather than a single 6.3V supply.
In those cases, continuity will exist between both sides of the heater supply and earth - that would account for your findings.
In those cases, continuity will exist between both sides of the heater supply and earth - that would account for your findings.
