This circuit will drive a 1 watt LED from 1 or 2 cells (commonly called “dry cells”).The circuit consists of only 4 components plus a LED and the secret to its operation is the transformer. It is operated in FLY-BACK mode and this causes it to produce a large voltage when it is turned off […]
This circuit is an extension of the 1-watt LED Driver project.It is a very clever circuit and will illuminate up to six 1-watt LEDs or 30 white LEDs to give an overall illumination of about 1 watt. 30 LEDs connected as 6 strings of 5 LEDs The 1-watt LEDs are not driven to full brightness […]
This. project is very simple. It is just a 4.5v supply with a LED and resistor in series. When the two probes touch they complete the circuit and the “test LED” (the red LED) will illuminate. When the probes are across a LED, only the LED being tested will illuminate. If the “test LED” illuminates, […]
The capacitor-fed power supply is sometimes referred to as a TRANSFORMERLESS POWER SUPPLY.This article is going to shock you because it is going to tell you all the reasons why you should NOT design, produce or use a CAPACITOR-FED POWER SUPPLY.The circuit shows a typical design for a capacitor-fed supply.It consists of 4 diodes in […]
This Metal detectors will detect ferrous (iron, steel, stainless steel) as well as non-ferrous (copper, tin, gold, lead, silver, aluminium) as well as alloys (brass, cupro-nickel, pewter etc).Depending on the complexity of the circuit, a metal detector will be able to discriminate between a lump of gold and an aluminium ring-pull from a drink-can.The circuit […]
The alarm keeps wailing if the door is kept open. It only turns off after 5-10 minutes when the door is opened and closed. The two door switches trigger the alarm as an Instant or Delayed input and these switches can be purchased from any alarm supplier. These switches can be reed switches that are […]
The 555 is one of the most popular chips on the market and hundreds of projects have been created using it.More than 30 billion have been produced and it can do almost anything.This project is a universal 555 board with components laid out in the same locations as on a circuit diagram, to make it […]
This 4 Digit Up/Down Counter has all the features you need. And they are all ON the PC board.This project is as old as Methuselah but it’s very handy for anyone producing or packaging a product or “counting their chickens.”You don’t need any extra relay or buzzer and the up/down switches have inputs for remote switching […]
The constant change in the position of the sun throughout the year has posed quite a big challenge for us as far as solar power harnessing is concerned. A solar tracker is a device for orienting a solar photovoltaic panel, day lighting reflector or concentrating solar reflector or lens toward the sun. Solar power generation […]
RoHS Restricted Materials The EU RoHS Directive (2011/65/EU) restricts the maximum allowable levels of six hazardous substances: lead (Pb), cadmium (Cd), hexavalent chromium (Cr6+), mercury (Hg), polybrominated biphenyl (PBB) and polybrominated diphenyl ether (PBDE) flame retardants to 0.1% or 1000 ppm (except for cadmium, which is limited to 0.01% or 100 ppm) by weight of […]
Capacitors are discussed for Bypass Capacitor Applications. How to select bypass capacitors and their working operation. Bypass capacitors are explained with ripple voltage, ripple current, noise voltage characteristics.
Digital Potentiometers (Digipots) are digitally controlled electronic components that mimics the analog functions of a potentiometer. It is often used for trimming and scaling analog signals by microcontrollers. It is either built using an R-2R integrated circuit or a Digital-to-analog converter. A digital potentiometer is an electronic component that is often controlled by digital protocols […]
Through-Silicon Via (TSV) is a vertical electrical connection (via) passing completely through a silicon wafer or die. TSVs are a high performance technique to create 3D packages and 3D integrated circuits, compared to alternatives such as package-on-package, because the density of the vias is substantially higher, and because the length of the connections is shorter. […]
Peregrine Semiconductor offers the RoHScompliant PE64904 and PE64905 DuNE Digitally Tunable Capacitors. The new 5-bit, 32-state digitally controlled variable capacitors provide a monolithically integrated impedance tuning solution for demanding RF applications. These UltraCMOS-based devices enable wide-band tunable networks, minimizing mismatch losses, improving system efficiency and reducing radio complexity for a cost-effective tuning solution. Design applications […]
Surface Mount Resistors or SMD Resistors are very small rectangular shaped metal oxide film resistor. They have a ceramic substrate body onto which is deposited a thick layer of metal oxide resistance. The resistive value of the resistor is controlled by increasing the desired thickness, length or type of deposited film being used and highly […]
Multi Layer Ceramic Capacitors (MLCC) characteristics are discussed with advantages and disadvantages of the dielectric classifications class-1 & class-2 dielectric ceramic capacitors.Electronic circuit design and reliability design guidelines for MLCC capacitors
MAZeT unveiled the multiple color sensors integrated TIAM4 module. In addition to the spectral operating detector, it contains the entire sensor electronics on-chip. The photocurrents of the detector are converted into voltages and are available via S & H on a MUX on the output side as an analog voltage signal for digital conversion. The […]
Silicon Laboratories Inc., a leader in high-performance, analog-intensive, mixed-signal ICs, today introduced the industry’s most frequency flexible in-circuit programmable CMOS clock generators. The new Si5350/51 octal clock generators with on-chip voltage-controlled crystal oscillators (VCXOs) replace traditional multi-component phase-locked loop (PLL) solutions with a single clock IC that delivers twice the frequency flexibility, 70 percent lower […]
NKK supplying OLED SmartSwitch video pushbutton switches. NKK recently announced that it has doubled the display life of its OLED SmartSwitch pushbutton switches. In addition, NKK has reduced the devices’ already low power consumption by 30 percent.An OLED Video Pushbutton is a pushbutton switch with a built-in color OLED display with capability to run video or image sequences. It has a push-button form factor for use in control panels and keyboards. Ideal for control rooms with real-time data, operator training equipment, broadcast panels, kiosks, etc. OLED display life is 60K hours at 50 cd/m² with 40% pixels on.
Q. What is Component Engineering? Q. Whom do you call a component engineer? Q. What is COTS? Q. What is obsolescence? How it affects an electronic product? Q. What are the reasons for obsolescence? Q. What are the obsolescence management strategies? Q. How do you select components? Q. What are the various temperature grades of […]
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