Circuit 2N2222 for Headphone amplifier This circuit can source about 500mA continuously, You built a 2 transistor project and it worked great, but now it has stopped working. You decide the transistor may be faulty.
Posts tagged 2N222 Datasheet
P1_____________22K R1_____________15K R2____________100K R3,R6__________10K R4,R5__________22K R7____________100R R8____________470R R9_____________33K C1_____________10nF D1________BZX79C18 D2_________TIC106D D3-D6_______1N4007 Q1,Q2________BC327 Q3___________BC337 SK1__________Female Mains socket PL1__________Male Mains plug & cable R3-R4 and P1-R1 are wired as a Wheatstone bridge in which R3-R4 generate a fixed two-thirds-supply “reference” voltage, P1-R1 generate a temperature-sensitive “variable” voltage, and Q1 is used as a bridge balance detector. […]
High quality active crossover frequency Active crossover using TL072 ,preset, Level, Mute
Audio circuit using 12AX7, 2x6BQ5, EL84 Audio circuit using 12AX7, 2x6BQ5, EL84
Electronic Schematic collections Digital TV Sound Processor using TDA9875A Digital TV Sound Processor using TDA9875A Electronic Schematic collections General Description The TDA9875A is a single-chip Digital TV sound Processor (DTVSSP) for analog and digital multi-channel sound systems in TV sets and satellite receivers.