power supply متغير الفولت من 1 الى 24 فولت
الدائرة
http://upload.qariya.info/up05/supply1.gif
C1 14000uF or 10000uf 40 VDC Electrolytic Capacitor
C2 100uF 50Vdc Electrolytic Capacitor
C3 0.1uF Disc Capacitor
C4 0.01uF Disc Capacitor
R1 5K Pot
R2 240 Ohm 1/4 W Resistor
U1 LM338K 1.2 to 30 Volt 5 Amp Regulator
BR1 10 Amp 50 PIV Bridge Rectifier
T1 24 V 5 Amp Transformer