ESP8266 Community Forum

- Fri May 07, 2021 9:08 am #91347 Reiterating for completeness, post #32540 has a link for calculating the resistors and choosing the PNP's:

NPN Transistor Maximum Collector Current Ic
PN2222 600-mA DC
2N2222 800-mA DC
MPSA13/MPSA14 500-mA DC
2N3904/2N3903 200-mA DC

- Fri May 07, 2021 2:43 pm #91348 Those schematics are wrong, according to transistor arrow, they are NPN, so not wired correctly ...