It allows both polarities to control the motor — however if you do it with just plain old switches or relays, you could short the circuit if you try going in both directions at once!

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Next he demonstrates stepping the motor manually and then makes a simple FET driver circuit. Just when you’re expecting a small microcontroller to appear, the [IMSAI Guy] instead digs deep into ...

That one’s a motor – we don’t need that one ... Practise drawing the following series circuits using symbols: A simple circuit with a bulb and battery. A series circuit where the bulb ...