
DIY Tube Stereo 70 Board - TubeZone V 1.0 -Instructions
... Installation of Parts on Unassembled Boards (skip if you have a preassembled board) Insert all parts before soldering, bending the leads down to hold them in place. This allows one to fix any placing errors that might occur very easily. Use a good pair of snips to remove the excess leads. Follow the ...
... Installation of Parts on Unassembled Boards (skip if you have a preassembled board) Insert all parts before soldering, bending the leads down to hold them in place. This allows one to fix any placing errors that might occur very easily. Use a good pair of snips to remove the excess leads. Follow the ...
LilyPad Technology - SparkFun Electronics
... Now we know about how long one coin cell battery can power 3 LEDs. If the battery run time you come up with is not long enough, there are some other options available to you. The Lilypad line has various components designed to allow you to plug in different types of batteries. Enough science, let's ...
... Now we know about how long one coin cell battery can power 3 LEDs. If the battery run time you come up with is not long enough, there are some other options available to you. The Lilypad line has various components designed to allow you to plug in different types of batteries. Enough science, let's ...
EMI/RFI Suppression Capacitors
... connected line to line and in the event of failure of the capacitor the potential for electrical shock is not present. X capacitors are further subdivided into three subcategories X1, X2 and X3. X1 capacitors are used where the peak voltage the capacitors will be greater than 2500 volts and less tha ...
... connected line to line and in the event of failure of the capacitor the potential for electrical shock is not present. X capacitors are further subdivided into three subcategories X1, X2 and X3. X1 capacitors are used where the peak voltage the capacitors will be greater than 2500 volts and less tha ...
Charge Sharing by Capacitors
... When S2 is closed, there can be no voltage across it, but Kirchhoff's Second Rule must still hold. The capacitors discharge partially in order to satisfy this. Let the initial charges (before closing S2) of C3 and C4 be Q3 and Q4. Let the final charges (after closing S2) be Q3' and Q4'. Let the fina ...
... When S2 is closed, there can be no voltage across it, but Kirchhoff's Second Rule must still hold. The capacitors discharge partially in order to satisfy this. Let the initial charges (before closing S2) of C3 and C4 be Q3 and Q4. Let the final charges (after closing S2) be Q3' and Q4'. Let the fina ...
IC-756Pro3: Installing the Inrad Roofing Filter Mod
... cables back into the board using the color codes and the notes taken when they were removed. Carefully re-insert the ribbon cable into its header. ...
... cables back into the board using the color codes and the notes taken when they were removed. Carefully re-insert the ribbon cable into its header. ...
Analysis Methods for Transient Circuits
... there exists a changing potential (voltage) difference – A capacitor looks like an open circuit to d.c. Lect14 ...
... there exists a changing potential (voltage) difference – A capacitor looks like an open circuit to d.c. Lect14 ...
Oktava MC-012 Upgrades
... 10 uF 25V type from Panasonic. If possible, it helps to put a small film capacitor of around 0.1 uF across this as a bypass, but to be honest just replacing it is a big step up. The most physically difficult part is replacing C3 and C4, which are the cylindrical wet-slug tantalum caps, one directly ...
... 10 uF 25V type from Panasonic. If possible, it helps to put a small film capacitor of around 0.1 uF across this as a bypass, but to be honest just replacing it is a big step up. The most physically difficult part is replacing C3 and C4, which are the cylindrical wet-slug tantalum caps, one directly ...
Heat Generation in Electronics
... Hysteresis Loss – Power dissipation due to the reversal of the magnetic domains in the core Eddy Current Loss – Heat generated from the conductive current flowing in the metallic core induced by changing flux ...
... Hysteresis Loss – Power dissipation due to the reversal of the magnetic domains in the core Eddy Current Loss – Heat generated from the conductive current flowing in the metallic core induced by changing flux ...
Date of submission
... 1. Write least possible resistance and maximum possible resistance that can be obtained using the following three resistors: 2 ohm, 3 ohm , 5 ohm? 2. an electric wire is stretched to increase its length by 25%. By what percentage the resistance will increase and what will be the increase in its resi ...
... 1. Write least possible resistance and maximum possible resistance that can be obtained using the following three resistors: 2 ohm, 3 ohm , 5 ohm? 2. an electric wire is stretched to increase its length by 25%. By what percentage the resistance will increase and what will be the increase in its resi ...
PS Mods Individ EFB Bias ST-35
... even worse to use, so when I built later boards, I inserted turret terminals rather than flea clips. While this turret construction offers more flexibility in component selection and placement than an etched board, it is considerably more labor intensive to complete. For anyone interested in maintai ...
... even worse to use, so when I built later boards, I inserted turret terminals rather than flea clips. While this turret construction offers more flexibility in component selection and placement than an etched board, it is considerably more labor intensive to complete. For anyone interested in maintai ...
DESIGN PROJECT â AUDIO AMPLIFIER CIRCUIT
... electric circuits are unforgiving. ANY mistake will likely cause the circuit not to work AT ALL (or cause something to burn up). I. Performance testing A. You will plug your audio input device to the circuit and demonstrate that it works. B. The volume must go up and down with the turning of the pot ...
... electric circuits are unforgiving. ANY mistake will likely cause the circuit not to work AT ALL (or cause something to burn up). I. Performance testing A. You will plug your audio input device to the circuit and demonstrate that it works. B. The volume must go up and down with the turning of the pot ...
MLVB
... design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all ...
... design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all ...
CHO-THERM® 1680 Thermally Conductive Insulators For Surface
... case from arcing through the material and allowing an electrical short circuit between the component and the metal mounting surface. This property is commonly presented as the voltage breakdown shown in the Typical Properties Table and is determined by electrical testing of multiple flat sheet sampl ...
... case from arcing through the material and allowing an electrical short circuit between the component and the metal mounting surface. This property is commonly presented as the voltage breakdown shown in the Typical Properties Table and is determined by electrical testing of multiple flat sheet sampl ...
NLI
... NLI has determined that PCP firing P.C. Assembly, PCP P/N 0000913270, that were manufactured or refurbished by NLI between October of 2002 and June 2006 have capacitors that are not rated properly for the application. Circuit boards outside of this date range are not impacted. The capacitors are ide ...
... NLI has determined that PCP firing P.C. Assembly, PCP P/N 0000913270, that were manufactured or refurbished by NLI between October of 2002 and June 2006 have capacitors that are not rated properly for the application. Circuit boards outside of this date range are not impacted. The capacitors are ide ...
Surface-mount technology

Surface-mount technology (SMT) is a method for producing electronic circuits in which the components are mounted or placed directly onto the surface of printed circuit boards (PCBs). An electronic device so made is called a surface-mount device (SMD). In the industry it has largely replaced the through-hole technology construction method of fitting components with wire leads into holes in the circuit board. Both technologies can be used on the same board for components not suited to surface mounting such as large transformers and heat-sinked power semiconductors.An SMT component is usually smaller than its through-hole counterpart because it has either smaller leads or no leads at all. It may have short pins or leads of various styles, flat contacts, a matrix of solder balls (BGAs), or terminations on the body of the component.