fix a typo, and add a second answer

diff --git a/FAQs/active-switch.mdwn b/FAQs/active-switch.mdwn
new file mode 100644 (file)
index 0000000..920d63f
--- /dev/null
+++ b/FAQs/active-switch.mdwn
@@ -0,0 +1,16 @@
+# What do you mean by 'active switch' in the manual?
+
+The only active switch we're aware of is the 
+[Featherweight Magnetic Switch](https://www.featherweightaltimeters.com/store/p4/Magnetic_Switch.html)
+
+These need three connections .. a ground, an input, and an output.  Of
+the two switch screw terminals on Altus Metrum products, one is
+connected to the + side of the battery terminal and is the input to such
+a switch, the other connects to the output of the switch.  Ground can be
+found on another screw terminal on TeleMega and EasyMega, there's an
+extra explicit hole you can solder a wire to on TeleMetrum, and all of
+our products have grounded mounting screw holes.
+
+For a typical, simple, mechanical switch .. you can ignore all this and
+just connect the two "switch" screw terminals.
+

diff --git a/FAQs/pyro_current.mdwn b/FAQs/pyro_current.mdwn
index 02777a16343f00ac9c826670b1d5a8c51e44ce18..90b90c906898d5cd63af416decf623187582983b 100644 (file)
--- a/FAQs/pyro_current.mdwn
+++ b/FAQs/pyro_current.mdwn
@@ -5,7 +5,7 @@ rated for 25A continuous, 40A pulsed.  Newer products use Taiwan Semiconductor
 TSM200N03D FETs which are rated for 20A continuous, 80A pulsed.  In pyro use, 
 we're closer to the pulsed rating than continuous.  However...
 
-Please note that Ohms law applies.  Whatever your battery voltage is and
+Please note that Ohm's law applies.  Whatever your battery voltage is and
 whatever your e-match or other device's resistance are will limit the
 actual deliverable current.  With a single-cell LiPo battery, the fully
 charged voltage is 4.2 volts, and a feature of LiPo batteries is that