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--- electrical:12v:b2b [2025/02/27 20:36]
frater_secessus [triggering] added sensing+trigger
+++ electrical:12v:b2b [2025/03/10 11:54] (current)
frater_secessus [examples - power stations] added link to solar input limit workaround
@@ Line 64: / Line 64: @@
   * **voltage sensing** - watching chassis voltage like [[electrical:12v:alternator#voltage-sensing_relays|a VSR]]
-  * by receiving a **trigger signal** (AKA "D+", "IGN", "ignition", etc) from the chassis:  signal = ON, no signal = OFF.  This method requires the user to find a chassis circuit that has power only when the key is turned.   Caveat:  leaving the key in the ACC ("accessory") position can trick the DC-DC into starting before the engine is running;  so don't do that.
+  * by receiving a **trigger signal** (AKA "D+", "IGN", "ignition", etc) from the chassis:  signal = ON, no signal = OFF.  This method requires the user to find a chassis circuit that has power only when the key is turned (IGN, ACC) or when the alternator is actually making power (D+).  Caveat:  leaving the key in the ACC ("accessory") position can trick the DC-DC into starting before the engine is running;  so don't do that.
   * **voltage sensing + trigger signal** - this is often used to tell voltage-sensing DC-DC that the alternator is smart (variable voltage).  IOW, "voltage is weirdly low but the D+ signal tells me this is a smart alt //and// the engine is running so I can charge regardless."
@@ Line 817: / Line 817: @@
 ===== examples - power stations =====
-Power stations often suffer from low DC input limits.  DC-DC chargers (//boost converters// in this case) can work around the limit by increasing the voltage to the power station input. If separate DC inputs are present these typically feed power to the solar input;  see your power station's product documentation for specifics.
+Power stations often suffer from low DC input limits.  DC-DC chargers (//boost converters// in this case) can work around the limit by increasing the voltage to the power station input.((also see [[12v:sg_troubleshooting#maxxing_out_the_solar_input|this subarticle]] about solar input.  The source of the charging is different but the math and concepts are the same.)) If separate DC inputs are present these typically feed power to the solar input;  see your power station's product documentation for specifics.
 **Warning:** exceeding the power station's **input voltage limit** will/may damage it.  Verify specs //before// purchasing, configuring, or installing.

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