From 0896ad379417fa8fe01e01605605b0dc902891dc Mon Sep 17 00:00:00 2001 From: Bdale Garbee Date: Wed, 8 Jan 2020 11:34:49 -0700 Subject: [PATCH] update comment on GPS backup current limiting resistor --- telemega.sch | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/telemega.sch b/telemega.sch index 53ec6f2..490ae56 100644 --- a/telemega.sch +++ b/telemega.sch @@ -2316,13 +2316,14 @@ N 76600 66100 77000 66100 4 N 77000 66100 77000 66200 4 N 76600 66100 76200 66100 4 N 76200 66100 76200 66200 4 -T 72000 65500 9 10 1 0 0 0 6 +T 71900 65200 9 10 1 0 0 0 7 v_charge can be 4.2 volts v_bckp must be 1.4 - 3.6 volts -i_bckp on the order of 22uA +i_bckp on the order of 15uA -56k should drop 1.232 volts, -and consume 27 microwatts +We could use up to 80k here, +but 56k should drop 0.84 volts, +which is sufficient. C 73800 67100 1 180 0 resistor.sym { T 73500 66700 5 10 0 0 180 0 1 -- 2.30.2