projects / hw / telefirefour / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 8b81cfc) | patch
Switch pyro series resistors to 1k master
authorKeith Packard <keithp@keithp.com>
Sat, 27 Jul 2019 23:58:23 +0000 (16:58 -0700)
committerKeith Packard <keithp@keithp.com>
Sat, 27 Jul 2019 23:58:23 +0000 (16:58 -0700)
commit4e17daef5cf6e38efecd33bdc7783573a651b6ca
tree045baf01f2882a86b4cc8fea44c73288eb111984tree | snapshot
parent8b81cfc734ae22abe8b1fe354e56c2ca08418f4acommit | diff
Switch pyro series resistors to 1k

This limits the current through the comparator to 3.3mA when it fires
to make sure the gate voltage on the FET is low enough. The SI LM293
comparators are rated at 4mA current, unlike the TI parts which are
rated at 6mA, hence the move from 549 to 1k.

Signed-off-by: Keith Packard <keithp@keithp.com>
telefirefour.sch diff | blob | history
4-channel launch pad end of wireless launch system