where mind meets motor

DVR technology is able to brake electronically.

Industrial companies have long wished for a motor's ability to step and brake. DVR is able to perform as DVR Technology Develoment's in-house testing shows.

Some Unique DVR Features

DVR has a huge potential in terms of industrial automation.  DVR Technology Developments can customize an industrial application simply and afordably with a package that not only has on board computing power but can easily interface with additional sensors.

Characteristics OF the DVR Technology


The DVR’s micro-computer automatically detects the load on the output shaft, and adjusts power extraction according to the load. As a result, the DVR motor has its highest torque at lowest speed and has a flatter torque curve over a wide range of speeds.

This unique characteristic means the DVR motor can be mounted directly to the output shaft, which allows it to achieve better output by eliminating the power lost in a traditional gears/belts and pulley drive system. (Typically, a belt driven machine has about 20% power loss just in the belt system alone!) When the shaft is under a light load, the micro-computer will reduce the power extraction to save energy. Combine this with the energy saving from eliminating the belt and pulley system, and the DVR motor can save at least 50 % energy over a conventional AC motor.


A key advantage of this motor is its wide speed range. DVR Motor Technology has the capability to handle speeds from as little as 100rpm, right through 10,000rpm, all in a versatile, compact package. (AC motor with inverter is only optimized at 1,500rpm).


​The DVR motor is constantly monitored by the micro-computer. In case of a sudden spindle lock, or unexpected sharp increas in load, the motor will automatically shut down power to the spindle to avoid any injury. There is further potential with this DVR motor to implement many more safety features determined by each customer's requirements.  


Our standard DVR motor will be able to be used unmodified for many different applications straight off the shelf. But our DVR Motor Technology can also be customized to suit your individual requirements. Adjustments such as Power Rating, Human Machine Interface (HMI), Speed Range, Safety Features, and much more.


The Teknatool International group has already been researching and using this motor technology for over 10 years. Sold as a wood lathe motor under the reputable NOVA brand name, the DVR motor has had proven success in dusty and demanding conditions in all kinds of environments in all corners of the globe; from freezing Alaska and Iceland, to tropical Australia and Central America.


The DVR motor is digital, just like a computer. It can save and store speed information on different preset settings and switch from one to another immediately, with just the single press of a button. This smart technology can also detect the input power resource, giving the DVR motor the ability to operate at a variety of different voltages (100v to 240v) and without further modifications being required.

How does it work?

Striatech's Digital Variable Reluctance (DVR) motors are the simplest kind of motors. The technology works by pure magnetic attraction. When a magnet is switched on, an intense magnetic field is created and pulls the tooth to line up with the magnet. Then the next magnet is switched on, which forces the spindle to rotate.
A feedback loop senses the motors surroundings to actively monitor conditions and performance, including how much power is actually drawn from the socket to the lathe at any time to complete the project on the spindle. Since it works by magnetic attraction, the speed or position of the shaft is unimportant to its torque.
In comparison, a regular ‘dumb’ AC or DC motor is not able to make a connection between the power supplied and the actual spindle requirements. The actions of the DVR motor are controlled by a micro computer, using a digital display and soft control pad.
Through intelligent control, this variable speed motor ‘talks’ to the internal micro-computer constantly monitoring conditions, giving it the edge in comparison tests with a conventional motor. It analyses (100s of times per second) both the spindle position and the power required to maintain a given speed. The motor knows the exact shaft position and is constantly coputing where the shaft should be. At 2000 rpm, for instance, it is computing the shaft position 24000 times per minute.

For further details on the DVR Technology, please download the Striatech Motor Booklet.
Striatech's electric motors utilize Switched Reluctance Motor technology. The motor has a simple structure. Around the outside of the motor are a number of electromagnets. The rotor is an extension of the headstock spindle - it looks like a large toothed shaft.