VACS:Projects:Hardware:LPS:PowerSupply
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;Positive Rectifier Board: The positive rectifier board needs a power supply for the AOP that measure the output currents. These AOP need a +24V and a -8V supply. | ;Positive Rectifier Board: The positive rectifier board needs a power supply for the AOP that measure the output currents. These AOP need a +24V and a -8V supply. | ||
;Positive Power Supply Controller: The controller contains an ATMega8 controller, several AOP and a voltage reference. The AOPs need a +10V and -8V supplies as their outputs need only be in the 0..+5V range. The voltage reference generates a +5.000V from the +10V. The board must also drive the two relays which are in the rectifier board. The relays are driven by +5V and -8V (dV = 13V). | ;Positive Power Supply Controller: The controller contains an ATMega8 controller, several AOP and a voltage reference. The AOPs need a +10V and -8V supplies as their outputs need only be in the 0..+5V range. The voltage reference generates a +5.000V from the +10V. The board must also drive the two relays which are in the rectifier board. The relays are driven by +5V and -8V (dV = 13V). | ||
| − | ;Positive Voltage Regulator: The voltage regulator drives the output power transistors using several AOPs. | + | ;Positive Voltage Regulator: The voltage regulator drives the output power transistors using several AOPs. The AOPs must be capable of having an output in the range 0..+20V. For this they need a +24V and a -5V supply. |
| − | + | ||
===Negative Power Supplies=== | ===Negative Power Supplies=== | ||
Revision as of 23:08, 29 November 2006
Contents |
Description
The power supply controllers and the master power supply board need themselves a power supply. To drive the output power supply transistors a specific power supply is used, this increases the rejection of the output loads and their mutual interactions.
LPS Power Supply
Positive Power Supplies
- Positive Rectifier Board
- The positive rectifier board needs a power supply for the AOP that measure the output currents. These AOP need a +24V and a -8V supply.
- Positive Power Supply Controller
- The controller contains an ATMega8 controller, several AOP and a voltage reference. The AOPs need a +10V and -8V supplies as their outputs need only be in the 0..+5V range. The voltage reference generates a +5.000V from the +10V. The board must also drive the two relays which are in the rectifier board. The relays are driven by +5V and -8V (dV = 13V).
- Positive Voltage Regulator
- The voltage regulator drives the output power transistors using several AOPs. The AOPs must be capable of having an output in the range 0..+20V. For this they need a +24V and a -5V supply.
Negative Power Supplies
- Negative Rectifier Board
- The negative rectifier board is similar to the positive rectifier board but the AOPs need a -24V and a +8V supply. The AOPs outputs are in the 0..+5V range.
- Negative Power Supply Controller
- This is similar to the positive power supply controller.
- Negative Voltage Regulator
- The voltage regulator drives the output power transistors using several AOPs. They need a -24V and a +8V supply.
Master Controller
- LPS Master Controller
- The master controller contains the ATmega8 controller, drives the LCD panel, a relay and the fans. The relay and fans are connected to the +5V and -8V.
The power supply controllers and the master power supply board need themselves a power supply. A positive power supply controller uses the following supplies:
LPS Power Supply Regulation
To obtain the LPS power supplies we use the toric transformer of the positive power supply. The +24V and -24V are obtained by a voltage multiplier from the 2x9V toric transformers. In theory it can reach 36V so the decoupling capacitor is chosen to support at least 50V.
