0 to 12 volt variable dual power supply circuit diagram
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0 To 12 Volt Variable Dual Power Supply Circuit Diagram ( 7812,7912)Posted on Thursday, 23 August 2012 by AseemSalim
Description
Yesterday I got a comment from FarazShahid on ' 0 To 12 Volt Variable Power Supply Circuit Diagram ', He asked me to upload a 12 volt variable dual power supply circuit diagram so this circuit diagram dedicated to FarazShahid. Here you can see a RV1 that is a dual variable resistor or volume controller .When you rotate the resistor voltages are increasing/decreasing identically. Every time the voltages are same. If you don't want identical voltages, please connect a single variable resistor separately. Here the volume controller considers as a potential divider.
Parts List
Component No: Value
R1 1K
R2 1K
RV1 100K
C1 1000MF
C2 1000MF
Q1 BC548
Q2 BC558
U1 7812
U2 7912
V1 230 V AC
V2 +12 V
V3 -12 V
B1 BRIDGE
TR1 12-0-12,1A
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