DATASHEET and Circuit Diagram

The schematic below shows PC/SC module alarm logic of the 300V Micro Family DC DC Converter Module. It contains “watchdog” circuitry which monitors input voltage, operating temperature and internal operating parameters. This DC-DC converter from Vicor used to be applied in applications such as industrial and process control, medical, ATE, communications, defense, aerospace and more.

This DC-DC Converter module has Pin control function such PC Pin (Module Enable/Disable, Primary Auxiliary Supply, Module Alarm), SC Pin (Output Voltage Programming), PR Pin (Parallel Operation including AC/DC Coupled Single-Wire Interface, Transformer Coupled Interface, and Voltage Drop Compensation).

Module Alarm Logic Schematic in the 300V Micro Family DC DC Converter Module continued »

The logic diagram of the CD4538BC Dual Precision Monostable is shown in the following schematic diagram. This IC such a dual, precision monostable multivibrator with independent trigger and controls, according to the datasheet. This CD4538BC IC features wide supply voltage range, wide pulse-width range, low standby current, high noise immunity and more.

What you will find in the depth of the CD4538BC datasheet are details about Trigger Operation (as seen in the schematic), Retrigger Operation (Retriggerable Monostables Circuitry), Reset Operation, Switching Test Circuit, and Power Dissipation Test Circuit and Waveforms.

CD4538BC Dual Precision Monostable Logic Diagram and Datasheet continued »

The diagram below appears Miniatur Alarm Generator Circuit for Laptop Protector. It such a home made tilt switch fixed inside the laptop case in order to protect laptop against theft since it will sounds loud when someone tries to take the laptop.

This device is powered by a 12V battery used in remote control devices. The components of this miniature alarm generator are readily available to be assembled on general PCB. It uses such IC TLO71 (IC1) for the voltage comparator, and IC CD4538 (IC2) for a monostable multivibrator.

Miniatur Alarm Generator Circuit for Laptop Protector continued »

The article herein will describe an overview of the basic laws of physics, circuit progression, and explains op amp operation through the use of feedback principles. It is described in a simplest description as math is the foundation of the circuit design. It could be helpful in understanding basic analog for the digital designers.

What you will find in the depth of the article are sections such as Ohm’s and Kirchoff’s Laws, Voltage and Current Dividers, Thevenin’s (see schematic) and Norton’s Theorems, The principle of superposition, discussion of feedback principles, The Op Amp Symbol, The Inverting-Non Inverting Op Amp, The Differential Amplifier, Putting a T network in the feedback path, Video Amplifiers, AC Theory and Op Amp Circuits Containing Capacitors.

Basic Op Amp Operation using Feedback Principles continued »

Using the current sensing feature of the LMD18200, the following circuit diagram appears a conventional analog control scheme called “Fixed Off Time Control”.

This circuit application is an example of Sign/Magnitude control.  Whenever the motor current exceeds the desired set level a one shot is triggered which turns on the two upper switches of the H-Bridge, shorting out the motor for a fixed time interval. By driving the direction input of the LMD18200, the motor can be reversed.

Fixed OFF Time Control Circuit Diagram using LMD18200 continued »

The herein schematic shows FAN5009 dual bootstrapped 12V high frequency MOSFET driver typical application circuit. It can be formed a complete core voltage regulator for microprocessors if combined with multi-phase PWM controller and power MOSFETs, according to the FAN5009 datasheet.

Related to the application schematic, these drivers can be applied as Supply Capacitor Selection, Bootstrap Circuit, Low and High Side Driver, and Adaptive Gate Drive Circuit.

FAN5009 MOSFET Driver Typical Application Circuit and Datasheet continued »