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rw:comp:a2000:power [2022/06/27 14:52]
super 		rw:comp:a2000:power [2022/10/26 17:29] (current)
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 =====Amiga 2000 Power Notes===== =====Amiga 2000 Power Notes=====
  
-**Power Supply**+====Power Supply====
  
   * Molex 2139 KK 3.96MM 14pin   * Molex 2139 KK 3.96MM 14pin
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 |3|+5V|yellow|| |3|+5V|yellow||
 |4|+5V|yellow|| |4|+5V|yellow||
-|5|GND1|blue|total +12V load is 8A|+|5|GND1|blue||
 |6|GND2|blue|| |6|GND2|blue||
 |7|GND3|blue|| |7|GND3|blue||
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     * is this just their hardware adapter or all atx adapters?     * is this just their hardware adapter or all atx adapters?
  
-**ATX PC Power Supply**+====Replacement Power Supplies====
  
 +Sadly, you can't just substitute any ATX in for the A2000, see below.  There is a small after market for replacement power supplies. See the A500 Power page for an easy Cisco swap. 
 +
 +**Meanwell**
 +
 +Meanwell has become a standard for replacing power supplies for the 8 and 16 bit lines. 
 +
 +  * MPQ-200B
 +    * medical rated, high quality + high cost
 +    * rated for 200W
 +    *  output
 +      * +5V at 15A (vs 20.5A)
 +      * +12V at 7A (vs 8A)
 +      * -5V at 2A (vs .3A)
 +      * -12V at 2A (vs .3A)
 +  * RQ-125B
 +    * only 125W!
 +    *  output
 +      * +5V at 11A (vs 20.5A)
 +      * +12V at 4.5A (vs 8A)
 +      * -5V at 1A (vs .3A)
 +      * -12V at .5A (vs .3A)
 +
 +----
 +
 +====ATX PC Power Supply====
 +
 +Here's the standard PC power supply to compare to Amiga's needs.  Nowadays, there is seldom a -5V power line. If you can find an old AT power supply you're almost guaranteed a -5V. Keep an eye out at yard sales and thrift stores. A quick and easy indicator is if a 5.25" or 3.5" drive is in the PC. This //usually// means it is an old power supply so the -5V may be there.
  
 ^Pin^Name^Color^Description^ ^Pin^Name^Color^Description^
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 |23|+5V|Red|+5 VDC| |23|+5V|Red|+5 VDC|
 |24|COM|Black|Ground| |24|COM|Black|Ground|
- 
  
   * /PSON activated by pressing and releasing the power button while the power supply is in standby mode. Activating /PSON connects the power supply's /PSON input to ground, thereby switching the power supply to full-on condition.   * /PSON activated by pressing and releasing the power button while the power supply is in standby mode. Activating /PSON connects the power supply's /PSON input to ground, thereby switching the power supply to full-on condition.
   * 18 AWG is recommended for all wires except pin 11, which should be 22 AWG. For 300W configurations 16 AWG is recommended.   * 18 AWG is recommended for all wires except pin 11, which should be 22 AWG. For 300W configurations 16 AWG is recommended.
- 
-**Meanwell** 
-  * MPQ-200B 
-    * medical rated, high quality + high cost 
-    * rated for 200W 
-    *  output 
-      * +5V at 15A (vs 20.5A) 
-      * +12V at 7A (vs 8A) 
-      * -5V at 2A (vs .3A) 
-      * -12V at 2A (vs .3A) 
-  * RQ-125B 
-    * only 125W! 
-    *  output 
-      * +5V at 11A (vs 20.5A) 
-      * +12V at 4.5A (vs 8A) 
-      * -5V at 1A (vs .3A) 
-      * -12V at .5A (vs .3A) 
  
  
Last modified: le 2022/06/27 14:52

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