View Single Post
Old 3rd Jan 2017, 5:54 pm   #22
G6Tanuki
Dekatron
 
G6Tanuki's Avatar
 
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 13,951
Default Re: Two or three IF stage Chinese radio kits.

For the phase-splitter you can't use a LT44-type driver transformer as that only has a single centre-tapped winding which won't work with a "totem pole" no-output-transformer stage.

Going to the "classic" push-pull ttransistor amp using LT44 and LT700 transformers would be better - at least that way each transistor has the full 3V of battery-voltage to work with.

[I've always had a weakness for the little 2-transformer push-pull transistor output stage; I built a lot of these as a kid - initially the little few-hundred-milliwatts versions using the likes of OC72 or OC81 transistors, then moving up to bigger stuff using OC35s in parallel to get 25 Watts or so...]
G6Tanuki is offline