Most commercial LED flashlights use three AAA or AA batteries in series that produce 4.5V. The batteries then drive four white LEDs that connect in parallel. These LEDs can work at voltages as low as 2.7V and, in some cases, 2.4V. At those voltages, the LEDs become dim, and you must frequently change the batteries. …
LED-flashlight circuit works at 0.5V low voltages Read More »
Customize Your Experience with my Atmel Finding app notes, training, kits, samples and other Atmel® design resources is now easier than ever with the new myAtmel portal. By signing up for a my Atmel account, you get: Automatic registration for downloads Alerts when previously downloaded documents or software are updated Product updates …
ARM Processor-based Microcontrollers – ARM Processor-based Microcontrollers Read More »
Heat and arcing won´t represent a threat to your health. Dust-off sprays will displace dust simply and efficiently even in harsh environment and from hard-to-reach places. Who wouldn´t like to have an allround reliable helper – a helper with a long hold-off, which won´t lose his breath after a short work? Dust off containing a …
(www.saelig.com) has introduced the ABI Board Master 8000 PLUS –a unique, versatile, self-contained, and easy-to-use PCB test system. The Board Master 8000 Plus is a comprehensive set of test instruments, complete with built-in PC, for testing and fault-finding on almost any kind of PCB. Incorporating a full range of test instruments in one compact box …
T&M Atlantic today announced that There is a new addition to AKTAKOMs handheld oscilloscopes-DMMs, a new device series dual channel models ADS-4062 and ADS-4102 with a bandwidth of 60 MHz and 100 MHz respectively. AKTAKOM new digital oscilloscopes-multimeters have maximum real time sampling rate of 1 GSa/s (500 mSa/s per channel) and the deepest Functionality …
New Series of Handheld Oscilloscopes-Multimeters AKTAKOMs handheld oscilloscopes-DMMs Read More »
ENC28J60 based Ethernet module. As you can see from the image above, the ENC28J60 module is very small. The PCB is more or less one-inch square which is almost as small as the included Ethernet jack. I decided to make a simple sensor webserver using the ENC28J60 that I got from EBay. I knew that …
Simple Sensor Webserver – ENC28J60 based ethernet module Read More »
Features Wide Operating Input Voltage Range: 4.5V to 38V 10A DC Typical, 12A Peak Output Current Output Range: 0.6V to 6V ±1.5% Maximum Total Output DC Voltage Error Differential Remote Sense Amplifier for POL Regulation Internal Temperature, Analog Indicator Output Overcurrent Fold back and Over temperature Protection Current Mode Control/Fast Transient Response Parallel able for …
LTM4641 – 38V, 10A DC/DC µModule Regulator, Input and Load Protection Read More »
Battery-operated equipment often will benefit from a power-on indicator. The indicator, however, can waste significant power. In situations where a low-duty-cycle blinking indicator provides an adequate indication of the power being turned on, the simple circuit described here should prove useful. Figure 1 Q1 and Q2 function as a current source and push a …
Low-duty-cycle LED flasher/indicator keeps power draw at 4 mW Read More »
In the Hammond 1553 enclosures series now can be found also types with a sufficient space for a keyboard and display. Series of ergonomic handheld enclosures – 1553 is familiar to many of you. All types from this series provide a reliable grip thanks to a pleasant side overmold, they feature the same shape and …
HAMMOND 1553T enclosures – keyboard and display in your hand using 1553T series Read More »
The 6502 CPU’s overflow flag explained at the silicon level In this article, I show how overflow is computed in the 6502 microprocessor at the transistor and silicon level. I’ve discussed the mathematics of the 6502 overflow flag earlier and thought it would be interesting to look at the actual chip-level implementation. Even though the …
