| Zasilacz do radiostacji. |
| Poniżej pełna informacja o pinach na złączu zasilacza HP DPS-600 PB warto zwrócić uwagę na zastosowanie pinów -S i +S (pochodzi od Dusey52 z forum RC): There's a lot of great information on the preceding pages but the 'unknown' pins always bugged me so here's an update to what the various pins do, enjoy. PIN .......... Ribbon Wire ....... Description . 1 ............ N/A ...................... +5VSB . 2 ............ N/A ...................... +5VSB . 3 ............ N/A ...................... +5VSB . 4 ............ 3 .......................... Fan speed, ground for minimum speed. (For variable speed use ~4.6v to Vcc.) . 5 ............ N/A ...................... -12V . 6 ............ 5 .......................... PsKill, ground this and PsOn to turn on the PS. . 7 ............ 6 .......................... +S (positive sense) . 8 ............ N/A ...................... DC ground . 9 ............ 8 .......................... -S (negative sense) 10 ............ 4 .......................... PsOn, ground this and PsKill to turn on the PS. 11 ............ 9 .......................... Current Share 12 ............ 7 .......................... Power OK/Fault (OK = 3.8V, Fault = 0V). N/A .......... 1 .......................... Ground from the output board back to the main board (must be tied to DC ground). N/A .......... 2 .......................... Ground from the output board back to the main board (must be tied to DC ground). N/A ........ 10 .......................... Ground from the output board back to the main board (should be tied to DC ground). OK, so what's the deal with pins 7 & 9, pin 9 is voltage adjust, right? Well, yes and no. High end power supplies regulate voltage at the load (as opposed to at the PS). They accomplish this by monitoring the voltage at the load using two small sense wires (+S & -S). The voltage at the load is feed back to the voltage regulator so the regulator can compensate for any line loss caused by large currents flowing through the primary output wires. If the sense pins are connected as originally intended, +S to the positive output line and -S to the negative output line, the PS will run at its rated output of 12.15V at the point where +S & -S are connected. If they're left open, you'll get about 12.5V. Now since these 'sense' pins give us access to the voltage regulator circuit, we have direct control over the regulator (within limits). To raise the output voltage you pull -S up or pull +S down (or both) using an appropriate resistor. A simple way to accomplish this is to connect a resistor between +S & -S. They're actually already tied together via a resistor internally, we're just adding a parallel resistor to lower the value. Here's a few examples of connecting +S to -S via a resistor and the resulting output voltage: 1.8K ......... 13.8V 2.1K ......... 13.6V 2.3K ......... 13.5V 2.7K ......... 13.35V 3.3K ......... 13.2V 3.9K ......... 13.1V 4.7K ......... 13.0V 10K .......... 12.7V Note: The closer to OVP (~13.8V) you get, the more likely you are to have issues with the PS shutting down unexpectedly and/or not being able to deliver full current. Last edited by Dusey52, Sep 21, 2013 at 11:31 AM. |