A Guide to the Design of Laminate PCBs at Microwave
... presence of the Nickel can cause significant losses. One alternative is a silver finish but this may eventually tarnish which could be an issue. PCBs usually include a solder resist layer to define the apertures for the solder paste for SMT components. Solder resist is often omitted from the RF trac ...
... presence of the Nickel can cause significant losses. One alternative is a silver finish but this may eventually tarnish which could be an issue. PCBs usually include a solder resist layer to define the apertures for the solder paste for SMT components. Solder resist is often omitted from the RF trac ...
CHRP Activity 1.1
... 1.1 - Series Circuits About series circuits The most common arrangement of electronic components is in the form of series circuits. Series circuits are useful precisely because there is only one path for current to flow through. When two or more components are connected in series, one component is a ...
... 1.1 - Series Circuits About series circuits The most common arrangement of electronic components is in the form of series circuits. Series circuits are useful precisely because there is only one path for current to flow through. When two or more components are connected in series, one component is a ...
2015-Modeling-of-an-automotive-LED-turn light-to-study-its-EMC-emissions-NE-CN67
... Modeling of the driver circuit in InCa3D The LED driver board comprises four layers described in InCa3D using the ECAD import function (import of Gerber files). In order to reduce the number of mesh elements (and also solving time), each layer has been “slightly” cleaned-up in the context for CAD de ...
... Modeling of the driver circuit in InCa3D The LED driver board comprises four layers described in InCa3D using the ECAD import function (import of Gerber files). In order to reduce the number of mesh elements (and also solving time), each layer has been “slightly” cleaned-up in the context for CAD de ...
Chapter 20 – Circuits and Circuit Elements
... know the symbols for each of these components of a circuit (a path for electrons to follow) What is a circuit? Pg 732 for definition Does a lightbulb offer a complete conducting path? What are the components of a lightbulb? (a): charges enter at the base (b): go thru filament (c): exit at thread ...
... know the symbols for each of these components of a circuit (a path for electrons to follow) What is a circuit? Pg 732 for definition Does a lightbulb offer a complete conducting path? What are the components of a lightbulb? (a): charges enter at the base (b): go thru filament (c): exit at thread ...
Printed Circuit Board
... The Op Amp The larger number of components in this negative portion is due to the fact that this tracks the output of the positive regulator and makes sure the output of the negative regulator is equal in scale. The capacitor C4 and the diode D9 work the same as the LM317 (positive 0-15V). The resi ...
... The Op Amp The larger number of components in this negative portion is due to the fact that this tracks the output of the positive regulator and makes sure the output of the negative regulator is equal in scale. The capacitor C4 and the diode D9 work the same as the LM317 (positive 0-15V). The resi ...
mk484 am radio receiver with varicap tuning
... small amount of voltage (isolated by R1) to D1, a varactor (varicap) BB-112 diode. The specs on this diode are it only requires 0 to 8V for a full capacitance range of 22 to 760 pF. The way a varactor diode works is the higher the voltage applied to it is in a reverse-biased configuration, the lower ...
... small amount of voltage (isolated by R1) to D1, a varactor (varicap) BB-112 diode. The specs on this diode are it only requires 0 to 8V for a full capacitance range of 22 to 760 pF. The way a varactor diode works is the higher the voltage applied to it is in a reverse-biased configuration, the lower ...
DC Voltage and Current Sense PCB with Analog Output
... connection path through shunt resistors with solder. As-supplied, the PCB has some solder flooding in this area, but it is up to you to ensure this is maintained after soldering of leads. The shunt resistors each have four terminals in a Kelvin configuration. Two terminals carry the shunt current lo ...
... connection path through shunt resistors with solder. As-supplied, the PCB has some solder flooding in this area, but it is up to you to ensure this is maintained after soldering of leads. The shunt resistors each have four terminals in a Kelvin configuration. Two terminals carry the shunt current lo ...
Application Note Ceramic Surface Mount Amplifier 1. Introduction
... The base of the package is ceramic due to the power dissipated in the transistor. Using a ceramic package is the best way to transfer heat out of the transistor, and still keep the design low cost for the commercial market. A land grid array package was used so that the amplifiers can easily be sold ...
... The base of the package is ceramic due to the power dissipated in the transistor. Using a ceramic package is the best way to transfer heat out of the transistor, and still keep the design low cost for the commercial market. A land grid array package was used so that the amplifiers can easily be sold ...
ESD Basics
... 4. Store electronic components in Anti-static bags. 5. If all else fails touch the metal case of an earthed appliance before handling electronic components. ...
... 4. Store electronic components in Anti-static bags. 5. If all else fails touch the metal case of an earthed appliance before handling electronic components. ...
Safety Rules for Soldering Soldering Techniques
... heat transfer between the tip and the components. The cleaning sponge should be soaking wet. Quickly run the soldering tip over the wet sponge to get rid of excess solder. 4. Clean the contact surfaces of the metal parts if necessary. Scrape off oxides with a utility blade. In some cases, it is easi ...
... heat transfer between the tip and the components. The cleaning sponge should be soaking wet. Quickly run the soldering tip over the wet sponge to get rid of excess solder. 4. Clean the contact surfaces of the metal parts if necessary. Scrape off oxides with a utility blade. In some cases, it is easi ...
Thermal Management of SMT LED Application Note
... OSRAM Opto Semiconductors GmbH “as is” and without OSRAM Opto Semiconductors GmbH assuming, express or implied, any warranty or liability whatsoever, including, but not limited to the warranties of correctness, completeness, merchantability, fitness for a particular purpose, title or non-infringemen ...
... OSRAM Opto Semiconductors GmbH “as is” and without OSRAM Opto Semiconductors GmbH assuming, express or implied, any warranty or liability whatsoever, including, but not limited to the warranties of correctness, completeness, merchantability, fitness for a particular purpose, title or non-infringemen ...
Bensalem Township School District
... 1. Structure of solder 2. Soldering and de-soldering equipment 3. Tinning a wire 4. Soldering solid wire 5. Securing wire to terminals 6. The Western Union splice 7. Pigtail connections 8. Tap or vampire splice 9. Soldering on printed circuit boards 10. Soldering practice project ...
... 1. Structure of solder 2. Soldering and de-soldering equipment 3. Tinning a wire 4. Soldering solid wire 5. Securing wire to terminals 6. The Western Union splice 7. Pigtail connections 8. Tap or vampire splice 9. Soldering on printed circuit boards 10. Soldering practice project ...
electricity and magnatisiam
... stood on end while combing it? Well that is static electricity at work. ...
... stood on end while combing it? Well that is static electricity at work. ...
What are PCB Ballasts? - Environmental Compliance
... Lighting ballasts manufactured before 1978 contain PCB=s or polychlorinated biphenyls. This chemical is man-made and was used to extend the life of products used in high heat situations. PCB’s were created to last a long time, which is part of the problem. Lighting ballasts manufactured after 1978 m ...
... Lighting ballasts manufactured before 1978 contain PCB=s or polychlorinated biphenyls. This chemical is man-made and was used to extend the life of products used in high heat situations. PCB’s were created to last a long time, which is part of the problem. Lighting ballasts manufactured after 1978 m ...
Basic Components - Tri County Amateur Radio Club WX4TC
... A resistor is the electrical component used to oppose the flow of current in a DC circuit. (T6A01) Most resistors have a fixed value, which is specified in ohms. Some resistors are variable that is you can change the resistance of the resistor by turning a shaft or sliding a control back and forth. ...
... A resistor is the electrical component used to oppose the flow of current in a DC circuit. (T6A01) Most resistors have a fixed value, which is specified in ohms. Some resistors are variable that is you can change the resistance of the resistor by turning a shaft or sliding a control back and forth. ...
1 Transimpedance Op-amp Circuit Board: The
... capacitor, feedback resistor, OPA132A, photodiode, two 2.2 uF decoupling capacitors (for V+ and V-), and two 15 nF decoupling capacitors (for V+ and V-). The explanation below is for 4 of the 8 possible circuits, as the other 4 circuits are mirrored on the other side of this circuit board, and compo ...
... capacitor, feedback resistor, OPA132A, photodiode, two 2.2 uF decoupling capacitors (for V+ and V-), and two 15 nF decoupling capacitors (for V+ and V-). The explanation below is for 4 of the 8 possible circuits, as the other 4 circuits are mirrored on the other side of this circuit board, and compo ...
Electric circuit
... Two terminals where the current into one is identical to the current out of the other. Circuit A current from one terminal of a generator, through load component(s) and back into the other terminal. A circuit is, in this sense, a one-port network and is a trivial case to analyze. If there is any con ...
... Two terminals where the current into one is identical to the current out of the other. Circuit A current from one terminal of a generator, through load component(s) and back into the other terminal. A circuit is, in this sense, a one-port network and is a trivial case to analyze. If there is any con ...
Circuit Theory
... – Distributed constant components account for propagation times through the circuit branches. – Lumped constant components ignore these propagation times. Appropriate for circuits small relative to signal wavelengths. ...
... – Distributed constant components account for propagation times through the circuit branches. – Lumped constant components ignore these propagation times. Appropriate for circuits small relative to signal wavelengths. ...
Multi-Key v2.4 - Harbach Electronics
... the Multi-Key. Make sure to perform the steps in the order they are listed. ...
... the Multi-Key. Make sure to perform the steps in the order they are listed. ...
Chapter 37: Meter Usage and Circuit Diagnosis
... ► The DVOM can read from low to high values. ► The DVOM in auto range will select the best value for the range being measured. ► The min/max setting gives the technician the ability to measure circuits that are only on momentarily. ► The hold function freezes the value measured. ► There are many dif ...
... ► The DVOM can read from low to high values. ► The DVOM in auto range will select the best value for the range being measured. ► The min/max setting gives the technician the ability to measure circuits that are only on momentarily. ► The hold function freezes the value measured. ► There are many dif ...
Quick Controller Instructions (rough draft)
... mosfets. Fasten the PCB in a suitable enclosure with holes drilled for the 2 wires, and 2 LEDs. To mount the LEDs in the clips, drill a hole for each LED, slide the larger slit piece of the retainer into the hole from the front (outside) of the box. Slide the smaller ring over the LED and wires. Ins ...
... mosfets. Fasten the PCB in a suitable enclosure with holes drilled for the 2 wires, and 2 LEDs. To mount the LEDs in the clips, drill a hole for each LED, slide the larger slit piece of the retainer into the hole from the front (outside) of the box. Slide the smaller ring over the LED and wires. Ins ...
Printed circuit board
A printed circuit board (PCB) mechanically supports and electrically connects electronic components using conductive tracks, pads and other features etched from copper sheets laminated onto a non-conductive substrate. PCBs can be single sided (one copper layer), double sided (two copper layers) or multi-layer (outer and inner layers). Multi-layer PCBs allow for much higher component density. Conductors on different layers are connected with plated-through holes called vias. Advanced PCBs may contain components - capacitors, resistors or active devices - embedded in the substrate.FR-4 glass epoxy is the primary insulating substrate upon which the vast majority of rigid PCBs are produced. A thin layer of copper foil is laminated to one or both sides of an FR-4 panel. Circuitry interconnections are etched into copper layers to produce printed circuit boards. Complex circuits are produced in multiple layers. Printed circuit boards are used in all but the simplest electronic products. Alternatives to PCBs include wire wrap and point-to-point construction. PCBs require the additional design effort to lay out the circuit, but manufacturing and assembly can be automated. Manufacturing circuits with PCBs is cheaper and faster than with other wiring methods as components are mounted and wired with one single part. Furthermore, operator wiring errors are eliminated.When the board has only copper connections and no embedded components, it is more correctly called a printed wiring board (PWB) or etched wiring board. Although more accurate, the term printed wiring board has fallen into disuse. A PCB populated with electronic components is called a printed circuit assembly (PCA), printed circuit board assembly or PCB assembly (PCBA). The IPC preferred term for assembled boards is circuit card assembly (CCA), and for assembled backplanes it is backplane assemblies. The term PCB is used informally both for bare and assembled boards.The world market for bare PCBs reached nearly $60 billion in 2012.