Will link this post to another forum where I can't post an ascii diagram:
24v | +---, | | batt | | | 12v ) - | ) ^ ,-----+-----------+ ) | | | | | | R1 R3 1k +---' | | U1A | | +-----|---|-\\ | |-' | | | >----+---|| | +---|+/ |-, | | | R2 | /-|--------+ | +------< | | | | \\+|--Vref | | = U1B Rs | | | | | | '-----+------------------' | gnd
Excuse me, I meant to post this one:
,------+---+------, | | | | | ) | | | ) | | | ) | | | | | | | +---|--, | | | | | | | ) - | | | ) ^ | batt ,-----+-----------+ ) | | | | | | | | | | R1 R3 1k +---' | | | | U1A | | | | +-----|---|-\\ | |-' = | | | | >----+---|| | | | +---|+/ |-, | | | | | | | R2 | /-|--------+ | | | +------< | | | | | | \\+|--Vref | | | | = U1B Rs | | | | | | | | | | | | '-----+------------------+-->|--+---' | gnd
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