What is Dip switch:
Dip switch, also known as dial switch, is a switch that can be manually adjusted. It is mostly a group of several switches in the form of standard dual in-line package (DIP). "Dip switch" can refer to individual switches or a whole group of switches. Dip switches are generally designed on printed circuit boards and used with other electronic components. The main purpose is to adjust the characteristics of electronic equipment.
Dip switch can be regarded as a substitute for jumper group. Its main advantage is that the switch is easier to switch state than jumper, and there is no short connector that may be lost or fall off. The dip switch with sliding rod applied for U.S. patent in 1976. The dip switch was used in 1974 and in the flip game of Atari in 1977.
Where are dip switches used?
Dip switch is widely used in industry standard architecture (ISA) computer expansion card to select interrupt request (IRQ) and memory address. Before the advent of cheaper battery powered ram, arcades in the 1980s also used dip switches to set game parameters, such as difficulty or the amount of money to be invested each time. Dip switch is also commonly used in garage door opener or some early wireless phones to set security code. The maximum length of the security code can be set with 12 switches, which can be used to avoid electromagnetic interference with other garage door openers or other equipment. The current garage door opener has been changed to a rolling code with high security.
The display cards used in early computers often had dip switches because of their compatibility with other display specifications. For example, color graphics adapter (CGA) graphics card allows compatibility with monochrome display adapter (MDA) specifications, which can be achieved through the setting of DIP switch.
Mechanical DIP switch is rarely used in consumer electronic products since 1990. The reasons include the trend of product volume reduction, the relatively simple setting of product configuration through software menu, and the price reduction of nonvolatile memory. However, dip switches are still often used in industrial products, mainly because they are cheap, easy to integrate with circuits, and can be set in case of power failure.
Dip switches can still be set on some remote control devices to avoid interference between different devices. For example, the remote controller for controlling ceiling fans and lamps. There will be a dip switch on the remote controller, which can set different RF for different transmitters / receivers. Therefore, the remote controller can be used in different rooms in the same house without unexpected mutual interference.
In X10 smart home devices, the rotary switch is also commonly used to set the home, room or device number. Rotary switches are also used in some transmitters (especially VHF and FM broadcast transmitters) to set the DC bias of the VCO (determine the center frequency of the carrier)
What are the switch types of FBelec?
1 flat dip switch
2. Key type dip switch
3. Right angle dip switch
4. IC dip switch
5. Chip dial switch
6. Rotary code switch
What are the electrical characteristics of DIP switch?
1. Electrical life: piano DIP switches is tested under the voltage of 24VDC and current of 25mA, and can be toggled back and forth for 2000 times;
2. Rated current of infrequent switch switching: 100mA, withstand voltage 50VDC;
3. Rated current frequently switched by the switch: 25mA, Withstand Voltage 24VDC;
4. Contact impedance: (a) the maximum initial value is 50m Ω; (b) The maximum value after test is 100m Ω;
5. Insulation impedance: minimum 100m Ω, 500VDC;
6. Withstand voltage strength: 500VAC / 1min;
7. Inter polar capacitance: max. 5pf;
8. Circuit: single contact single selection: DS (s), DP (L).
Dip switches have various forms and styles, and switches from different manufacturers vary due to different specifications.
FBelec dip switch is widely used in overclocking of computer motherboard, FM code matching of wireless communication, radio and television and computer software programming of automation equipment.
What are the characteristics of DIP switches?
mechanical properties
1. Operating force: 800g Max
2. Push button stroke: 2.00mm
3. Service temperature: - 20 ℃ ~ + 70 ℃
4. Storage temperature: - 40 ℃ ~ + 85 ℃
NINGBO FBELE ELECTRONICS CO.,LTD.
FBELE company was founded in 1997, is China's leading manufacturer of acoustic and other electronic components, we designs,manufactures, distributes high quality products in very competitive price, bestservice, timely delivery, small order acceptable, etc. Our products include piezo ceramic element, piezoelectric buzzer, magnetic buzzer,speakers, transducer, receiver, electret condenser microphone, magnetic contact. Piezoelectric alarm,ultrasonic sensor,PZT ceramics,etc.
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