24v
|
+---,
| |
batt |
| |
12v ) -
| ) ^
,-----+-----------+ ) |
| | | | |
R1 R3 1k +---'
| | U1A | |
+-----|---|-\ | |-'
| | | >----+---||
| +---|+/ |-,
| | |
R2 | /-|--------+
| +------< | |
| | \+|--Vref |
| = U1B Rs
| | |
| | |
'-----+------------------'
|
gnd
,------+---+------,
| | | |
| ) | |
| ) | |
| ) | |
| | | |
| +---|--, |
| | | | |
| ) - | |
| ) ^ | batt
,-----+-----------+ ) | | |
| | | | | | |
R1 R3 1k +---' | |
| | U1A | | | |
+-----|---|-\ | |-' = |
| | | >----+---|| | |
| +---|+/ |-, | |
| | | | |
R2 | /-|--------+ | |
| +------< | | | |
| | \+|--Vref | | |
| = U1B Rs | |
| | | | |
| | | | |
'-----+------------------+-->|--+---'
|
gnd