gabrod / Voltage Regulator 9V

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How make a voltage multiplier with 2 opamps
gabrod

gabrod

@copilot How make a voltage multiplier with 2 opamps
1y

copilot

To create a voltage multiplier (specifically a voltage doubler) using two op-amps, you can use a configuration known as the "capacitor-based voltage doubler." Below is a guide to implementing this using the components you have:
Components Required
  • Two op-amps (LM741)
  • Capacitors (C1, C2)
  • Resistors (R1, R2, R3, R4)
  • Diodes (D1, D2, D3, D4 like 1N4007W)
  • Power Source (BATT1)
Schematic and Connections
The basic idea is to charge capacitors in parallel and discharge them in series to create a higher voltage. Here is the step-by-step connection:
  1. First Op-Amp Stage for Voltage Inversion:
    • Components: U1 (op-amp), R1 (resistor, 10k), R2 (resistor, 10k), C1 (capacitor)
    • Connect R1:1 to U1:2 (-)
    • Connect R1:2 to Net 3
    • Connect U1:3 (+) to Net 3
    • Connect R2:1 to BATT1:+ and R2:2 to U1:6 (OUTPUT)
    • Connect C1: $V-$ to U1:4 (V-)
    • Connect BATT1: (-) to net 7
    • Connect D2: $K$ to U1:6 and D2:$A$ to VR1:CW
    • Connect C1: Right side to Net 6 (for output)
  2. Second Op-Amp Stage for Summing the Voltages:
    • Components: U2 (op-amp), R3 (resistor), R4 (resistor), C2 (capacitor)
    • Connect R3:1 to U2:2 (-)
    • Connect R3:2 to Net 4
    • Connect U2:3 (+) to Net 4
    • Connect R4:1 to BATT1:+ and R4:2 to U2:6 (OUTPUT)
    • Connect C2: $V-$ to D3: facing inwards
    • Connect BATT1: (-) to net 7
    • Connect [ VR1]:CW middle point to Net 4
Voltage Calculation
  1. Inverting stage output: Vout(U1)=−VinV_{out(U1)} = -V_{in}Vout(U1)​=−Vin​
  2. Summing Stage output: Vout(U2)=Vin+(−Vin)=2VinV_{out(U2)} = V_{in} + (-V_{in}) = 2V_{in}Vout(U2)​=Vin​+(−Vin​)=2Vin​
Let me know if you need further assistance or corrections with specific component placements!
1y
2
R4
Resistance
4.7kΩ
R3
Resistance
470 Ω
R1
Resistance
1kΩ
BATT1
R2
Resistance
10kΩ
U2
U1

Reviews

  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
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    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
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    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
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    jharwinbarrozo
    1.5M
  • Generic Capacitor
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    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
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  • Generic Inductor
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    natarius
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Voltage Regulator 9V

Voltage Regulator 9V thumbnail
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