Toy13 300B Amplifier DIY Record....1

Design & drawing 300B high voltage  circuit with delay on function.
Main power switch setup in 300B case.
High voltage will be remote turn-on and through Jump wire supply to 300B case.


Design & drawing 300b signal amplifier & 300B bias circuit.
Calculate 6C45pi & 300B plate voltage.


Prepare all components  & 300B tubs.


Do placement & hand drill hole for Mount 5U4G & delay on Relay.
High voltage & chock transformer will mount on this box too and  separate circuit with 300B case.


Do placement & hand drill hole for mount 6C45Pi & 300B platform.
6C45Pi & 300B  high voltage & bias circuit will fix in the case.



Mount 6C45Pi & 300B platform structure picture.