Stepper motor controller


motor-driver-circuit

Stepper Motor controller

The circuit is very simple and inexpensive. This is good thing because most commercial stepper motor controller ICs are quite expensive. 

Voltage Inverter Circuit


This simple and inexpensive circuit can produce a dual (positive and negative) voltage from a single supply input. 

It is therefore extremely useful for powering opamp and other circuits that require a dual voltage from a single battery. 

Servo Amplifier current negative feedback


current-negative-feedback
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