What does CR mean on a printed circuit board?

What does CR mean on a printed circuit board?

Designators

What does C mean on a circuit board?

The serial Numbers of R107, C118, Q102 and D202 are often seen on the circuit board. Generally, the first letter identifies the device category, such as R for resistor, C for capacitor, D for diode and Q for three-stage tube.

What is the component reference designator?

A reference designator is used to identify a component within an electrical schematic or on a printed circuit board (PCB). It consists of one or two letters followed by numbers (e.g., C15, D10, J5, R18).

What is reference designator in Bom?

Reference designators are sequenced comments and instructions that pertain to a component. For example, you may have drawings that clarify the assembly process for certain components, or further instructions for the use of a large quantity of the same component.

What does CR mean in electrical?

CR often means ‘current rectifier’, translate diode.

How do I identify a PCB?

Instructions

1. Look for the part number identifying the built up circuit board. In many cases, there will be two numbers printed on a board.
2. Look for a part number etched into a large wiring trace or a ground plane.
3. Use a serial data communication program to access computer memory for serial number information.

What does CX mean on a circuit board?

Cx is the no polarity capacitor, the power input terminal, the anti-interference capacitor; IC integrated circuit module; Ux is the IC (integrated circuit element);

What does Cy mean in electrical?

AC current in this country is generated at 60 cycles per second. Older equipment will be identified in cycles (CY) and newer equipment in Hertz (HZ). CY and HZ mean the same thing. (The CY was changed to HZ to honor a German physicist, Heinrich Hertz, who unraveled the mystery of cycles in AC current.)

How do I find a reference designator?

The reference designator for a specific component can be seen in your schematic design documents, PCB layout, and bill of materials as you create the database for your design. Each reference designator in the schematic editor will appear in the silkscreen layer in the PCB layout.

What is FB on a circuit board?

FB is the designator for a ferrite bead. A FB acts a lot like an inductor, in that it filters out AC, and they slow transition of DC signals.

What component does S or SW stand for?

Switch
Resistor. S. Switch. SW. Switch – an alternative widely used non-standard abbreviation.

What is a current rectifier?

a transformer that converts an alternating electrical current into a direct current. The majority of high-power electrical energy sources produce alternating current.

What is the reference designator for electrical components?

The reference designator usually consists of one or two letters followed by a number, e.g. R13, C1002. The number is sometimes followed by a letter, indicating that components are grouped or matched with each other, e.g. R17A, R17B. IEEE 315 contains a list of Class Designation Letters to use for electrical and electronic assemblies.

What is the difference between a voltage reference and a regulator?

On Digikey, you can get a voltage reference with 0.01% tolerance. With voltage regulators, you’d be lucky to get one with a 1% tolerance. Generally (though there will be exceptions) references have better specifications than regulators. Included in those specifications are (stability is a big thing with references!)

What are IC voltage regulators?

We have already explained about IC Voltage Regulators. All electronic voltage regulators will have a stable voltage reference source which is provided by the reverse breakdown voltage operating diode called zener diode. The main reason to use a voltage regulator is to maintain a constant dc output voltage.

What are the different types of voltage regulators?

Voltage regulators may be classified as electromechanical or electronic. It can also be classified as AC regulators or DC regulators. We have already explained about IC Voltage Regulators.