Encoders
An
Introduction to Encoders by
Odd Parts
Gray
code definition from the National Institute of Standards and Technology
Gray code conversion
from Numerical Recipes in C
Sensors
- Actuators - Encoders
- Steppers - Switches
Pneumatics - Realworld Interfacing - Circuits - Robots |
||
Encoders are basically
an array of switches arranged in some systematic pattern.
Like their predecessors in pre-computer days, they may be linear, rotary or arranged around a drum. |
||
Paper Tape Reader An electromechanical device which reads 1-5/8 inch paper tape punched in two groups of 6 levels, for a total of 12. |
The mechanical precursor: player piano paper roll. |
|
Airflite Electronics Drum Encoder An electromechanical device with 26 tracks, unusual circuitry and coding. Quantity 1
|
The mechanical precursor: music box drum. |
|
Hexadecimal Thumbwheel An electromechanical array of 8 thumbwheel
switches. |
||
Muirhead Microswitch Rotary Encoder Six electromechanical microswitches are arranged in rotary fashion and interconnected with a complex circuit of 6 diodes to provide 8 codings for a bipolar stepper motor. |
||
Sharp Incremental Disk Encoder 9 slotted disks rotating inside 9 photointerruptors. Part of the Raster Technologies control panel show at right (the center column of controls is an inset of the rear view). Quantity 1 |
|
|
Absolute Rotary Encoder Code Disk A radial array of optical sensors reads the pattern on the disk which determins its rotational angle. The resolution is 256 per revolution. Coding is mised: binary for the low order 4 bits and strange for the high order 4 bits. |
The mechanical precursor: music box disk. |
|
Disc Instruments Rotaswitch Optical resolution: , 2000 per rotation. TTL compatible. Quantity 1 |
||
Digilog Librascope
Shaft-to-Digital Encoder An electromechanical device with two 26-pin connectors. |
||
Teledyne Gurley Versatec Incremental Encoder Quantity 1 |
||
Litton Shaft Incremental Encoder Quantity 1 |
||
DATEX Shaft Position Absolute Linear Encoder Optical resolution: Quantity 1 |
||
DATA TECHnology Incremental Encoder Optical resolution: 500 per revolution, parallel A, B two-bit output. Quantity 1 |
||
TWK Single Turn Absolute Encoder 12V, Optical resolution: 1024 per revolution, Gray code, parallel 10-bit output. Quantity 3 |
||
BEI - Two Axis Gimbal with Absolute Encoders
Optical resolution: Quantity 1 |