current indicator - Circuitos electrónicos
Circuitos electrónicos: current indicator
The LTC®3886 is a dual PolyPhase DC/DC synchronous step-down switching regulator controller with I2C-based PMBus compliant serial interface. This controller employs a constant-frequency, current-mode architecture, with high voltage input and output capability along with programmable loop compensation. The LTC3886 is supported by the LTpowerPlay software development tool with graphical user interface (GUI). The EXTVCC pin supports voltages up to 14V allowing for optimized circuit efficiency and .......
Our purpose here is to explore the potential of PIC12F683 microcontroller for which we need a development board.The good thing is we are going to make our own board.The schematic and the actual board that I have built are shown below. I soldered all the components on a 12 x 8 cm general purpose prototyping board.Completed Board It has following features in it:1. A Regulated .......
A Battery-status Indicator circuit can be useful, mainly to monitor portable Test-gear instruments and similar devices. LED D1 flashes to attire the user\'s attention, signaling that the circuit is running, so it will not be left on by mistake. The circuit generates about two LED flashes per second, but the mean current drawing will be about 200µA. Transistors Q1 and Q2 are wired as an uncommon complementary astable multivibrator: both are off 99% of the time, saturating only when the LED illumi.......
This universal automatic battery charger circuit is extremely versatile with its functioning and can be adapted for all types of battery charging and even for solar charge controller application. A universal battery charger circuit must have the following main features included in it:1) Automatic battery full charge cut-off, and automatic low battery charging initialization, with corresponding LED indicator warnings. 2) Adaptable to all types of battery charging3) Adaptable to any given voltage .......
The final part of the lap timer build along is also the easiest part, involving only the IR Detector and an optional LED with current limiting resistors. The previous steps can be found in the project index section of RC Arduino -http://rcarduino.blogspot.com/p/project-index. htmlA good introduction to IR Detectors is provided on the Ada Fruit website here -http://learn. adafruit.com/ir-sensorTo start our build we need a small section of strip board and a set of three wires for power, ground and.......
The LM3553 is a fixed frequency, current mode step-up DC/DC converter with two regulated current sinks. The device is capable of driving loads up to 1. 2A from a single-cell Li-IOn battery. One or more high current flash LEDs can be driven in series either in a high power Flash mode or a lower power Torch mode controlled by either an internal register or the FEN pin. Additionally a low current (20mA) indicator mode and a fixed output voltage mode are also available. The.......
This is a 1. 2 - 12 V, max 1A power supply with a low voltage indicator LED. The indicator part incluedes three diodes and one LED. For example you are charging a battery, you can observe the charge status at that moment. Another advantage of this circuit, when the drawn current exceeds 1A (practically 0. 85A), the current protector in LM317 intervens and LED indicator warns you about the very low output voltage. Be careful while choosing the transformer. Most of the products are specified a.......
This is a 1.2 - 12 V, max 1A power supply with a low voltage indicator LED. The indicator part incluedes three diodes and one LED. For example you are charging a battery, you can observe the charge status at that moment. Another advantage of this circuit, when the drawn current exceeds 1A (practically 0.85A), the current protector in LM317 intervens and LED indicator warns you about the very low output voltage. Be careful while choosing the transformer. Most of the products are specified as 1.......
Accurately monitor battery voltage with LM3914 LED bar graph driver
Theft preventer alarm Click here for Circuit Diagram. This circuit utilising a 555 timer IC can be used as an alarm system to prevent the [. . ]
This Instructable is about the evolution of a circuit and its construction in it I will be covering three things I see little mention of in circuits o.
Supertex inc. Battery Back-Up Utilizing Low Threshold MOSFETs Introduction The simple battery backup circuit shown in Figure 1 utilizes Supertex low threshold DMOS devices to achieve excellent efficiency. In fact, one of the [. . ]
LED DRIVER PR4401/PR4402 0. 9V Boost Driver for White LEDs PR4401/4402 Requires Only One External Component The PR4401 and PR4402 are single cell step-up converters for white LEDs operating [. . ]
design Edited by Bill Travis ideas Circuit compensates optocoupler temperature coefficient J Michael Zias, Acme Electric Corp, Cuba, NY hen using an optocoupler in a 10k 6 1 linear application, [. . ]
CIRCUIT IDEAS MOBILE PHONE BATTERY CHARGER T. K. HAREENDRAN I THE SAN O M obile phone chargers available in the market are quite expensive. The circuit presented here comes as a low-cost [. . ]
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