2010年8月24日 星期二

Toy12 Plasma tweeter Diy-3


Fix shielding net on front side and assemble power bottom panel.
Mid panel for fix volume knob.


Fix shielding net on rear side and assemble AC connector.
Mid panel for fix Audio in RCA jack.


High voltage Design in a delay on relay (about 10 sec.) for heater turn on first.
High voltage I usage 2 times frequency boost to 1000V then step down to about 600V.
Finish L channel C-R-L-C filter.


Finish R channel high voltage connection.
IF frequency high voltage about 500v than step down to 350V for ECL82 plate and setp down to 190V for 6C45pi plate-voltage.



Two times frequency boost to 1000V Rectifier tub is 5U4G.

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