Anti-interference design in PCB wiring
In the design of PCB routing, the input and output wires should avoid crossing as far as possible, and the feedback coupling can be avoided by adding capacitance between the wires.
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The advantages and disadvantages of PCB flexible circuit board are introduced
All kinds of reliability design in digital circuit application is related to the reliability requirements of the circuit in practical application and product engineering requirements, so it is not possible to add various kinds of high-cost "guarantee...
PCB design is extremely important
The basic concept of microstrip theory and the concept of microwave RF circuit and PCB design is actually an application aspect of microwave double transmission line theory.
The points for attention of PCB copying software Protel in PCB wiring are analyzed
When multiple different boards are drawn in one file and want to split the delivery, please draw a border for each board in layer Mech1 with a space of 100mil between the boards.
The basic principle of DC power supply design in high speed PCB design
Power part and control part separate layout, power circuit is generally large voltage, large current, high power circuit, relatively large interference. And the control circuit is low voltage, if the control part to the power part, the control part is ver
pcb display
In addition, it is important to have the signal layer adjacent to the loop layer, that is, the board layout is signal, ground, signal, signal, power, ground, signal, signal, signal, signal.
The effect of PCB layer-stack design on EMI suppression is analyzed
In the case of the IC on our circuit board, the power layer around the IC can be regarded as a good high-frequency capacitor, which can collect the energy leaked by discrete capacitors that provide high frequency energy for clean output.
Discussion on the importance of PCB design of switching power supply
In addition, whether the need for special treatment, such as copper foil, shielding, etc., also need to be considered in the PCB design stage.
Causes of PCB board bending and warping and methods of prevention
In fact, the biggest source of stress in Reflow process is "temperature", which not only makes the circuit board soft, but also distorts the circuit board. This, coupled with the material properties of "thermal expansion and cold contractio...
Reflection of PCB design line width change
When the PCB wiring width changes, it should be carefully analyzed according to the actual situation to determine whether it will cause any impact. There are three parameters to be concerned about: how much impedance change, how much signal rise time, and
Analysis of the real cause of PCB board explosion and countermeasures
the Tg value will decrease after baking PCB is also a problem. A better method is to control the water absorption conditions from the selection of PCB board and the manufacturing process.
The important factor affecting the quality of PCB isolation film
Multi-layer PCBS stored for more than three months may show stress concentration (from pressing) and water absorption (which will increase Z expansion).
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