This is the circuit diagram of a 3A
adjustable power supply using IC LM350K. LM350K is a very rugged voltage
regulator IC with features like thermal regulation, short circuit
protection etc. This circuit is designed as per the application notes in
the data sheet and was found to be working very fine. This circuit has
improved ripple rejection and better stability compared to the
elementary voltage regulator using the same IC. The output voltage can
be adjusted by using the POT R2. By adjusting R2 the output voltage can
be varied between 1.2V and 25V. The diode D2 discharges capacitor C2
when the output is shorted.
- The circuit can be assembled on a Vero board.
- Input voltage to the regulator can be 30V.
- LM350 must have a heat sink.
- The output voltage is governed by the equation; Vout = 1.25V[ 1+ (R2/R1)]+[(Iadj)(R2)].
No comments:
Post a Comment