MAX6369 Series Watchdog Timers

The MAX6369-74 series watchdog-only supervisors are available in tiny SOT23-8 packages and have selectable watchdog timeout periods (1.7ms to 104s), start-up delays (1.7ms to 104s) and output pulse widths (1.7ms and 170ms) depending on the part selected and the state of 3 pins (SEL0, SEL1, SEL2). These parts have several advantages over the historical “555” solutions. As well as the lower supply current (20 ...

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Digitally Controlled 2.1 Channel Analog Audio Power Amplifier

This article introduces high quality digitally controlled 2.1 channel analog audio power amplifier system. This project is mainly based on TDA7377 AF power amplifier and PIC18F452 8bit microcontroller. Basic technical features of this receiver are covered in table1. This unit is specifically design to work with PC sound cards, radio receivers and CD/DVD/Blue-Ray players. Construction This system use commonl ...

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LTC4015 – Multichemistry Buck Battery Charger Controller with Digital Telemetry System

Features Multichemistry Li-Ion/Polymer, LiFePO4, or Lead- Acid Battery Charger with Termination High Efficiency Synchronous Buck Battery Charger Digital Telemetry System Monitors VBAT, IBAT, RBAT,NTC Ratio (Battery Temperature), VIN, IIN, VSYSTEM, Die Temperature Coulomb Counter and Integrated 14-Bit ADC Wide Charging Input Voltage Range: 4.5V to 35V Wide Battery Voltage Range: Up to 35V Input Undervoltage ...

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SL040A will load it to you directly into a table sheet

RFID keyboard emulators are able to significantly simplify tracking of goods. Replacement“ of a keyboard in a form of an RFID module connected to a USB port works very simply - UID of every tag, which will appear in its range will send to a computer - the same way as if we typed it in by a keyboard. SL040A also enables to choose, whether we want the reader to send only data, or also a „CR“ character after e ...

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Think about a soldering tool for every occasion

Transformer soldering tool Toolcraft SP200 is a useful complement even if you already have a quality soldering station. In praxis, it´s possible to heard various opinions on “transformer soldering tools”. Usually this is the first type of a soldering tool with which a young electro-technician begins. It´s small, a tip heats up quickly, doesn´t take a lot of space, it´s easily transportable and last but not ...

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Simple circuit lets you characterize JFETs

When working with discrete JFETs, designers may need to accommodate a large variation in device parameters for a given transistor type. A square-law equation is usually used as an approximate model for the drain-current characteristic of the JFET: ID=β(VGS−VP)2, where ID is the drain current, VGS is the gate-to-source voltage, β is the transconductance parameter, and VP is the gate pinch-off voltage. With t ...

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Avoid these common aluminum electrolytic capacitor pitfalls

Aluminum Capacitor Pitfalls Aluminum electrolytic capacitors remain a popular choice in power supplies due to their low cost. However, they have limited life and are sensitive to both hot and cold temperature extremes. Aluminum electrolytic capacitors are constructed with foils placed on opposite sides of paper saturated with an electrolyte. This electrolyte evaporates over the capacitor's lifetime, alterin ...

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TFT-LCD Production Process Explained

Ever wondered how the TV and monitor displays you use every day work? The TFT-LCD manufacturing process consists of a set of processes for producing TFT, color filtering, cell, module and others. LG Display Newsroom gives a detailed, but easy to follow explanation of the entire steps below. Close Look at the Thin Film Translator (TFT) Process Let’s take a closer look at the production process for a TFT boar ...

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2.5A Bipolar Stepper Motor Driver LV8772E

Tiny Board has been designed around LV8772 IC from On-Semi. This driver is capable of micro-step drive and supports 4W 1-2 phase excitation. It has Low on Resistance with motor current selectable in four steps. The board is equipped with unusual condition warning LED and input Pulse Monitor LED. It is most suitable for the drive of a stepping motor for OA, amusements, hobby CNC, 3D printers, automatic machi ...

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Wireless servo controller II

We described simple method, how to drive modellers servo. Today, we are going to try to drive this servo from potentiometer connected to TR module ADC. It is reaction to forum thread where is discussion about airplane model control possibility. We are going to use redesigned ADC usage example (sensor module source code) in this way:   while(1) { //clrwdt(); waitDelay(5); ReadAnalogInput(); voltage = AD ...

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