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======= Power Supplies ======= Find Here some schematics for DIY Power Supplies. It could help to power your midibox ! **/!\ Be Aware of high voltages! - Stay Safe ! /!\** ===== +5V DC / +9V DC / +12V DC ===== {{ :neonking:dcunipolar-5v-9v-12v.jpg?direct |}} ==== 5V Parts List ==== ^ Value ^ Type ^ Qty ^ Designation ^ |LM7805 |VR | 1 | U1 | |1N4007 |Diode | 4 | D1,D2,D3,D4 | |220 |Resistor | 1 | R1 | |22µF/25V |Capa Elec| 1 | C2 | |2200µF/40V |Capa Elec| 1 | C1 | |S05K400 |Varistor | 1 | VR | |9VDC 15VA |Transfo | 1 | TR | ==== 9V Option ==== Replace: * U1 > LM7809 * TR out> 12VDC * R1 > 390ohms ==== 12V Option ==== Replace: * U1 > LM7812 * TR out> 12VDC * R1 > 510ohms ===== -12V/+12V DC ===== A designed has been purposed there : * [[http://www.midibox.org/dokuwiki/doku.php?id=bipolar_12v_psu| Bipolar 12V PSU]] ===== -15V/+15V DC ===== {{ ::neonking:dcbipolar.jpg?direct |}} ==== Parts List ==== ^ Value ^ Type ^ Qty ^ Designation ^ |LM317T |VR | 1 | U1 | |LM337T |VR | 1 | U2 | |BDX54 |PNP | 1 | Q1 | |BDX53 |NPN | 1 | Q2 | |10A04 |Diode | 4 | D1,D2,D3,D4 | |10 |Resistor | 2 | R1,R5 | |120 |Resistor | 2 | R2,R6 | |820 |Resistor | 2 | R4,R8 | |1320(1,1k+220)|Resistor | 2 | R3,R7 | |1µF/25V |Capa Elec| 2 | C2,C5 | |22µF/25V |Capa Elec| 2 | C3,C6 | |10000µF/40V |Capa Elec| 2 | C1,C4 | |S05K400 |Varistor | 1 | VR | |15VDCx2 90VA |Transfo | 1 | TR | For Fine Voltage Tuning replace R3/R7 by a 2K Multi turns Trimpot.
