https://industrial.panasonic.com/www-data/pdf/ABA0000/ABA0000CE138.pdf
the 22uF cap is EEHZC1V220R, as above datasheet.
I think I have neglected something...the concerns over inrush into the 22uF electrolytic capacitors are meaningful after all?.......ESR = tan(d)*Xc........and inrush involves a "step" input of current into the capacitor....."steps" have steep sides, which infers "High frequency", and therefore the actual ESR , seen by the "step" input of current will be very very low......in the milliOhms range, so there *will* be massive inrush into the 22uF capacitor after all...and this inrush slams through the BE junction of the PNP transistor........so do we all now agree that the circuit of the top post in this thread is actually very bad/dodgy?
the 22uF cap is EEHZC1V220R, as above datasheet.
I think I have neglected something...the concerns over inrush into the 22uF electrolytic capacitors are meaningful after all?.......ESR = tan(d)*Xc........and inrush involves a "step" input of current into the capacitor....."steps" have steep sides, which infers "High frequency", and therefore the actual ESR , seen by the "step" input of current will be very very low......in the milliOhms range, so there *will* be massive inrush into the 22uF capacitor after all...and this inrush slams through the BE junction of the PNP transistor........so do we all now agree that the circuit of the top post in this thread is actually very bad/dodgy?