04-01-2013, 02:26 PM
103 has plus to the chassis.
The rule is - the most negative point in the whole schematic is the rectifier negative output which is in case of the centertapped arrangement is the center-tap itself. ANYTHING else is positive relative to it, including the chassis. So when the chassis is decoupled towards the centertap, the plus goes to the chassis, as again, nothing is more negative than the centertap.
The rule is - the most negative point in the whole schematic is the rectifier negative output which is in case of the centertapped arrangement is the center-tap itself. ANYTHING else is positive relative to it, including the chassis. So when the chassis is decoupled towards the centertap, the plus goes to the chassis, as again, nothing is more negative than the centertap.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
