Electronic components and electromechanical components have electrical contacts, and the electrical connection between two discrete contacts is called interconnection. Electronic devices must be interconnected in accordance with the circuit schematic to achieve the intended function.
As a part of the whole machine, a printed circuit board generally cannot constitute an electronic product, and there must be a problem of external connection. Electrical connections are required between circuit boards, circuit boards and off-board components, printed circuit boards and equipment panels. The selection of the best combination of reliability, process and economy is one of the important contents of pcb board design. There are many ways to connect externally, and you have to choose flexibly according to different characteristics.
#3 – Always provide a common ground point An electronics system, whether that’s a single or a multi-board system, needs a single point for all grounds to come together. This might be the metal frame on a chassis or a dedicated ground layer on your PCB. You’ll commonly hear this referred to this common ground point as star grounding.
Printed Circuit Board Interconnection Method 1: Welding Method
The connection method has the advantages of simplicity, low cost, high reliability, and can avoid failure caused by poor contact; the disadvantage is that the interchange and maintenance are not convenient. This method is generally applicable to the case where the component has fewer external leads.
Helders Common Ground Pcb
- This is a common ground button PCB for use in your projects. It is particularly well-suited for the Game Boy Zero project here. Features: d-pad, start, select, A, B, X, and Y buttons available (breakout header for L1, L2, R1, and R2) 1.27mm-spaced solder points for use with common ribbon cable hook-up wire; Gold-immersion PCB treatment.
- Normally, the common mode current is not actively sent through the electrical circuit, but if the ground of a power supply circuit or driver IC vibrates, the entire circuit it drives will vibrate, resulting in common mode noise. If a cable is externally connected to the circuit, common mode current will also flow through the cable.
- Hence ground planes tend to exhibit lower impedance ground connections, and more nearly equipotential ground references Ground planes are especially effective in the analog control portions of switching regulator circuits But it is still possible to observe significant coupling of noise in ground, by. poor layout of ground plane, or.
1. PCB Wire Welding
This method does not require any connectors, as long as the wires are used to directly solder the external connection points on the PCB printed board to the components or other components outside the board. For example, a speaker in a radio, a battery case, and the like.
Common Ground Pcb Layout
Pay attention to the interconnection of the board when soldering:
(1) The pads of the soldered wires should be as close as possible to the edge of the PCB printed board and arranged in a uniform size to facilitate soldering and maintenance.
(2) In order to improve the mechanical strength of the wire connection, to avoid the wire or the printed wire being pulled off due to the pulling of the wire, the hole should be drilled near the solder joint on the PCB printed board, so that the wire is worn from the soldering surface of the printed board. Through the via hole, insert the pad hole from the component surface for soldering.
(3) Arrange or bundle the wires neatly and fix them with the plate by wire cards or other fasteners to prevent the wires from breaking due to movement.
2. PCB Cable Welding
The two PCB printed boards are connected by a cable, which is reliable and difficult to connect, and the relative positions of the two PCB boards are not limited.
Direct soldering between printed boards, this method is often used for a 90 degree angle between two printed boards. Once connected, it becomes a unitary PCB printed board component.
Printed Circuit Board Interconnection Method 2: Connector Connection Method
In more complicated instruments and equipment, the connector connection method is often used. This 'building block' structure not only ensures the quality of the mass production of the product, reduces the cost of the system, and provides convenience for debugging and maintenance. When the equipment fails, the maintenance personnel do not have to check the component level (that is, check the cause of the failure, trace the source to the specific components. This work takes a considerable amount of time), as long as it is determined which board is not normal, It can be replaced immediately, troubleshooting in the shortest time, reducing downtime and increasing equipment utilization. The replaced circuit board can be repaired in a sufficient amount of time and used as a spare part after repair.
1. Printed Circuit Board Socket
This type of connection is often used in more complex instruments. In this way, the printed plug is made from the edge of the PCB printed board, and the plug part is designed according to the size of the socket, the number of contacts, the distance of the contact, the position of the positioning hole, etc., so as to match the special PCB printed board socket.
Common Ground Cbc
When making the board, the plug part needs to be gold-plated to improve wear resistance and reduce contact resistance. This method is simple to assemble, interchangeable, and has good maintenance performance, and is suitable for standardized mass production. The disadvantage is that the manufacturing cost of the printed board is improved, the manufacturing precision and the process requirements of the printed board are high; the reliability is slightly poor, and the contact is often poor due to oxidation of the plug portion or aging of the socket spring. In order to improve the reliability of the external connection, the same lead wire is often taken in parallel through the contacts on the same side or both sides of the circuit board.
The PCB printed circuit board socket connection method is often used for multi-board structure products, and the socket and the printed board or the bottom plate have two types of reed type and pin type.
2. Standard Pin Connection
This method can be used for the external connection of the printed board, especially in small instruments. The two printed boards are connected by standard pins, which are generally parallel or perpendicular, making mass production easy.
Common Ground Pcb Material
- » Previous: Printed Circuit Board Designing and Plate-making Technology
- » next: 10 Tips For PCB Panel in PCB Factory
Common Ground Pcb Plants
- The Air Quality Sensor Board
his PCBA was made for one of our American customers. This customer is in the smart home industry. The products produced by our company include circuit boards in ...
- Protective circuit device of small controller
Products Purpose: Protective circuit device of small controller. Working principle: Convert the volts higher than the used voltage to the volts that can meet ...
- Thermodynamics and PCB design
When PCB design is becoming smaller, thinner, and PCB products with a large amount of accumulation ability, we must take the heat factor into consideration. You ...
- What are PCB board materials?
With the continuous expansion of PCB market capacity, the demand of PCB board is also increasing. How to select the most suitable plate for proofing has become ...
- 4 PCB+4 PCBA projects
We are working with Australian customers on 4 PCB projects and 4 PCBA projects. These items are used for electrical equipment testing, safety testing, preventio ...
- Pure Resistance Cirtuits
What is the pure resistance circuits?In AC circuit, resistance (R), inductance (L) and capacitance (C) are three basic circuit components. If there is only one ...