SCPVD-1 € 147.78 VAT excl. SCPV VALVE DRIVER - + Shop This product has been added to your cart. Reference : Category : 2. Electronic Valves Description Product details SCPV Driver A Bipolar Chopper Drive (not included) is a power-efficient method of using current to drive a stepping motor to obtain high stepping rates. The chopper gets its name from the technique of rapidly turning the output voltage on and off (chopping) to control motor current. Stepper motors require some external electrical components in order to operate. These components typically include a power supply, logic sequencer switching components and a clock pulse source to determine the step rate. Many commercially available drives have integrated these components into a complete package. Find here more information on the process and here how to install and operate the driver .