if anyones gonna go through the patent , list or diagram (3 different things)
time constant = R1 x C2 , 2.7k ohm x .1uf , freq is calculated from that
Ive made push pull transformers before and nothing like that diagram.
R9 is 5watt and R10 is 1 watt , these are for the transistor bases !
Z coil is centre tapped and secondary coil is centre tapped , thing is line 29 and 33 are negative earth , D1 and D2 are reverse , they can only conduct is the centre tap line 31 is negative in comparison to line 33 ... but SCR is connected to line 29 , which is negative also .
SCR anode is connected to the centre tap ? theres no connection to the positive rail for the SCR
the winding ratio isnt 18:1 , the Tr2 doesnt have a rectifier , cathode 13 is definitely negative earth but that doesnt count as a rectifier
has anyone else looked over the circuit diagram ?