The Well Regulated Poweer Supply push-pull voltage regulator
The TWRPS-pp micro is a low noise push-pull voltage regulator which can be used to provide positive and negative voltage rails.
Features:
Regulator type: push-pull
Output: 3V3 to 15Vdc 100 mA
Board size: 33mm x 51mm
Power supply: unregulated 9 to 23Vdc 100 mA
Board options: bare board only
Schematic and download
Negative rail assembly:
– install Q101 and Q112 instead of Q1 and Q12
– reverse the polarity of all diodes
– reverse the polarity of all capacitors
– Q3 and Q5 are D44H11 instead of D45H11
– Q10 is D45H11 instead of D44H11
– Q4, Q6 and Q7 are BC860C instead of BC850C
– Q8 and Q9 are BC850C instead of BC860C
– Q2 and Q11 are 2SA1312 instead of 2SC3324