Coded switches offer binary and Gray encoding

18 April 2007 Switches, Relays & Keypads

Lorlin Electronics offers a wide range of coded rotary switches for control and programming functions. The standard BCK series offers 16 positions of binary encoding or complementary hexadecimal versions.

The contacts in conventional binary coded switches produce a standard binary count as the contact disc rotates. However, there is a drawback in that if the disc stops between two adjacent sectors, or the contacts are not perfectly aligned, it can be impossible to determine the angle of the shaft and an incorrect code may be read.

To overcome this problem, the 8 position GCK family of Gray coded switches is available. Gray encoding is a system of binary counting in which two adjacent codes differ in only one position. With Gray coding switching transitions only one of the contacts has to change its state from on to off or vice versa. This avoids the potential of incorrect code sequences that may be possible from conventional binary coded mechanisms.

The BCK and GCK offer contacts rated at 150 mA at 50 V AC/DC, operational life greater than 10 000 cycles, operating temperature -30 to 85°C, 250 V a.c. proof voltage and contact resistance of less than 50 mΩ.

Further reading:

Compact switching joystick
Brabek Switches, Relays & Keypads
The MHS Series from Ruffy Controls is a momentary four-way or eight-way switching joystick with an optional pushbutton validation feature.

Read more...

---

Schlegel switches available from TME
Switches, Relays & Keypads
The range of Schlegel products available at TME comprises contact blocks, compatible switches, and accessories.

Read more...

---

Miniature SIP reed relay with 5 kV stand-off capability
Switches, Relays & Keypads
Pickering Electronics has added a 5 kV stand-off, up to 1,5 kV switching version to its single-in-line Series 104 reed relay family.

Read more...

---

New robust mid-sized joystick
Brabek Switches, Relays & Keypads
These ergonomic mid-sized palm joysticks from Apem are available with multifunction configurable handles, and are IP67 rated.

Read more...

---

SMD tactile switches for miniaturised applications
Vepac Electronics Switches, Relays & Keypads
Panasonic Industry has introduced a new series of durable thin-type SMD tactile switches for miniaturised applications requiring a switch with a short travel distance for extremely quick output.

Read more...

---

Miniature rotary switch series
Electrocomp Switches, Relays & Keypads
The high-quality miniature rotary switch series (MRSS) by TE Connectivity has a compact design which offers 50% lower profile than standard DIP switches.

Read more...

---

‘Excellently average’ PhotoMOS relays
Avnet Abacus Switches, Relays & Keypads
With the new AQY215S 100 V load voltage type, Panasonic Industry complements its GU series of MOSFET relays in the middle of the feature scale.

Read more...

---

Automotive solid-state relays
Switches, Relays & Keypads
The TPSI3050-Q1 isolated switch driver and the TPSI2140-Q1 isolated switch both integrate power and signal isolation across a single barrier.

Read more...

---

Heavy-duty incremental and absolute encoders
Vepac Electronics Switches, Relays & Keypads
Wachendorff Automation now offers a heavy-duty variant, in a very compact 36 mm design, as part of its range of incremental encoders in the WDGP series, as well as absolute encoders in the WDGA series. ...

Read more...

---

Ergonomic tuning knobs with illumination options
Avnet Abacus Switches, Relays & Keypads
With its new Control-Knobs range, OKW Gehäusesysteme offers an advanced range of tuning knobs as the central elements for menu-controlled interfaces. The soft-touch grip surface provides an easy hold, ...

Read more...

---