Positive Regulator with PNP Boost

Positive Regulator with PNP Boost
The IC8211 (Programmable Voltage Detectors) provides the voltage reference and regulator amplifier, while Q1 is the series pass transistor. R1 defines the output current of the IC8211, while Cl and C2 provide loop stability and also act to suppress feedthrough of input transients to the  output supply. R2 and R3 determine the output voltage as follows : (more…)