The scenario
An operator uses push buttons to raise/lower a hydraulic lift and steer left/right on a tractor. The direct-switch circuit powers solenoid valves without relays, using flyback diodes for protection.
What is in this drawing
Read the decisions behind it.
01
Direct switch control without relays for simplicity
02
Flyback diodes across inductive solenoids
03
Fuse protection on main power
When designing or troubleshooting the electrical control side of simple hydraulic implement circuits on agricultural machinery.
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