I can't post the schematic from this phone
http://electronics-diy.com/electronic_schematic.php?id=116
My question is the offset DC output.
Notice the IC'S are tied to a separate ground. Seems to be held by a zener?
Or is the resistor/capacitor in the AC leg and diode D6? making a separate halfwave rectifier. (Transformerless mains connection possible, but let's not go there yet)
Are they doing something "chinese" with the AC input to get them to a zero to whatever power supply that answers the 1.2 volt offset problem like the one going on in another thread right now?
http://electronics-diy.com/electronic_schematic.php?id=116
My question is the offset DC output.
Notice the IC'S are tied to a separate ground. Seems to be held by a zener?
Or is the resistor/capacitor in the AC leg and diode D6? making a separate halfwave rectifier. (Transformerless mains connection possible, but let's not go there yet)
Are they doing something "chinese" with the AC input to get them to a zero to whatever power supply that answers the 1.2 volt offset problem like the one going on in another thread right now?