VACS:Projects:Hardware:LPS:PowerSupply
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==LPS Power Supply Summary== | ==LPS Power Supply Summary== | ||
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<table width="100%" border="1" cellpadding="0" cellspacing="0"> | <table width="100%" border="1" cellpadding="0" cellspacing="0"> | ||
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<td>Positive Power Supply Rectifier</td> | <td>Positive Power Supply Rectifier</td> | ||
<td>Analog</td> | <td>Analog</td> | ||
− | <td> | + | <td>10mA</td> |
<td>Analog power supply for operational amplifiers. | <td>Analog power supply for operational amplifiers. | ||
</td> | </td> | ||
Line 117: | Line 116: | ||
<td>Positive Voltage Regulator</td> | <td>Positive Voltage Regulator</td> | ||
<td>Analog</td> | <td>Analog</td> | ||
− | <td> | + | <td>20mA</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
Line 126: | Line 125: | ||
<td>Negative Power Supply Rectifier</td> | <td>Negative Power Supply Rectifier</td> | ||
<td>Analog</td> | <td>Analog</td> | ||
− | <td> | + | <td>10mA</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
<td>Negative Voltage Regulator</td> | <td>Negative Voltage Regulator</td> | ||
<td>Analog</td> | <td>Analog</td> | ||
− | <td> | + | <td>20mA</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
<td>Positive Power Supply Controller</td> | <td>Positive Power Supply Controller</td> | ||
<td>Analog</td> | <td>Analog</td> | ||
− | <td> | + | <td>30mA</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
<td>Negative Power Supply Controller</td> | <td>Negative Power Supply Controller</td> | ||
<td>Analog</td> | <td>Analog</td> | ||
− | <td> | + | <td>30mA</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
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<td>Positive Power Supply Controller</td> | <td>Positive Power Supply Controller</td> | ||
<td>Digital</td> | <td>Digital</td> | ||
− | <td> | + | <td>80mA</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
<td>Negative Power Supply Controller</td> | <td>Negative Power Supply Controller</td> | ||
<td>Digital</td> | <td>Digital</td> | ||
− | <td> | + | <td>80mA</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
<td>LPS Master Controller</td> | <td>LPS Master Controller</td> | ||
<td>Digital</td> | <td>Digital</td> | ||
− | <td> | + | <td>250mA</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
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<td>Positive Power Supply Controller</td> | <td>Positive Power Supply Controller</td> | ||
<td>Analog</td> | <td>Analog</td> | ||
− | <td> | + | <td>20mA</td> |
+ | <td>Used by 2 TL074</td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
Line 180: | Line 180: | ||
<td>Analog</td> | <td>Analog</td> | ||
<td>50mA</td> | <td>50mA</td> | ||
+ | <td>Used by the AOPs and the relays.</td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td> | + | <td>Negative Power Supply Controller</td> |
<td>Analog</td> | <td>Analog</td> | ||
<td>50mA</td> | <td>50mA</td> | ||
Line 195: | Line 196: | ||
<td>Negative Power Supply Regulator</td> | <td>Negative Power Supply Regulator</td> | ||
<td>Analog</td> | <td>Analog</td> | ||
− | <td> | + | <td>20mA</td> |
</tr> | </tr> | ||
</table> | </table> |
Revision as of 15:44, 30 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 -5V supply to ensure that the output can vary between 0 and +5V (while the inputs can reach 10/15V).
- Positive Power Supply Controller
- The controller contains an ATMega8 controller, several AOP and a voltage reference. The AOPs need a +9V and -5V supplies as their outputs need only be in the 0..+5V range. The voltage reference generates a +5.000V from the +9V. The board must also drive the two relays which are in the rectifier board. The relays are driven by +5V and -5V (dV = 10V).
- 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 +9V supply. The AOPs outputs are in the 0..+5V range and the inputs may be as low as -10/-15V.
- 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. The AOP must have the outputs that vary between 0 and -20V. They need a -24V and a +9V 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 -5V.
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.
LPS Power Supply Summary
+24V | +9V | +5V | -5V | -24V | |
Positive Power Supply Rectifier | x | x | |||
Negative Power Supply Rectifier | x | x | |||
Positive Voltage Regulator | X | X | |||
Negative Voltage Regulator | X | X | |||
Positive Power Supply Controller | R | X | X | X | |
Negative Power Supply Controller | X | X | X | R | |
LPS Master Controller | X | X | |||
LPS LCD Panel | x | x |
- X
- The supply voltage is used by the board.
- x
- The supply voltage is used but passed throught a specific connector.
- R
- The supply voltage is not used but necessary (it is relayed to another board).
+24 | Positive Power Supply Rectifier | Analog | 10mA | Analog power supply for operational amplifiers. |
Positive Voltage Regulator | Analog | 20mA | ||
+9V | Negative Power Supply Rectifier | Analog | 10mA | |
Negative Voltage Regulator | Analog | 20mA | ||
Positive Power Supply Controller | Analog | 30mA | ||
Negative Power Supply Controller | Analog | 30mA | ||
+5V | Positive Power Supply Controller | Digital | 80mA | |
Negative Power Supply Controller | Digital | 80mA | ||
LPS Master Controller | Digital | 250mA | ||
LPS LCD Panel | Digital | 100mA | ||
-5V | Positive Power Supply Rectifier | Analog | 50mA | Used by the AOPs and the relays. |
Positive Power Supply Controller | Analog | 20mA | Used by 2 TL074 | |
Negative Power Supply Rectifier | Analog | 50mA | Used by the AOPs and the relays. | |
Negative Power Supply Controller | Analog | 50mA | ||
-24V | Negative Power Supply Rectifier | Analog | 20mA | |
Negative Power Supply Regulator | Analog | 20mA |