Differences

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--- electronic:actuator:stepper:fmd02700b4 [2023/09/29 09:05] – tony
+++ electronic:actuator:stepper:fmd02700b4 [2026/09/26 10:38] (current) – tony
@@ Line 1: / Line 1: @@
+{{ :electronic:stepper:p4048494.jpg?150}}
+^  Stepper Description  |||
+^Model| |**FMD 02700 B4**|
+^Manufacturer| |Matsushita|
+^Drive method| |bipolar|
+^Number of phases| |2|
+^Winding colours| |red-blue, white-yellow|
+^Step angle|(deg)/step|18|
+^Voltage|V|5?|
+^Current|A/phase|0.1?|
+^Winding resistance|ohm/phase|50|
+^Inductance|mH/phase|-|
+^Holding torque|mN*m|-|
+^Detent torque|mN*m|-|
+^Rotor inertia|g*cm*cm|-|
+^Weight|g|-|
+^Insulation Class| |-|
+^Insulation resistance| |-|
+^Dielectric strength| |-|
+^Operating temperature range|(deg)C|-|
+^Allowable temperature rise|(deg)|-|
+\\
+===== Additional info =====
+  * https://www.mikrocontroller.net/topic/558913
+\\
+----
+===== Schematics =====
+{{https://upload.wikimedia.org/wikipedia/commons/7/76/Stepper_Motor_Driver_CD.png?550|Licensed PD by https://commons.wikimedia.org/wiki/User:Inductiveload}}
+Suggested controller that could power these motors.  But even if the output current and voltage of the chips is sufficient, at least diodes to protect the outputs from back EMF (when switching the motor windings) are needed.
+----
+===== Examples =====
+^Head positioning motors extracted from 5.25″ floppy drives :|
+{{:electronic:stepper:p4048494.jpg?800}}

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