# Tag - using

## Frequency to voltage converter using LM331

Description. LM331 is basically a precision voltage to frequency converter from National Semiconductors. The IC has a hand full of applications like analog to digital conversion, long term integration, voltage to frequency conversion, frequency to voltage conversion. Wide dynamic range and excellent linearity makes the [...]

## Proteus Tutorial – Using Single and Multiple Digit Segment Displays

Segment Displays Inside Segment Displays Segment Displays contain LEDs arranged in a specific fashion such that, various characters or shapes can be displayed, by turning ON selective segments in different combinations. Shape of the LED is rectangular (to appear as a segment).Generally, these are used to [...]

## Decreasing Channel Bandwidth by Using CW Key Clicks

Decreasing Channel Bandwidth by Using CW Key Clicks The text has previously mentioned that it’s important for the transmitter not to turn on or off too quickly. For example, C56 in the Driver Amplifier is used to gradually turn off the transmitter: In this lecture, we [...]

## [Aptitude] Boats and Streams made-easy using our STD-Table Method

Case#1: Basics Case 2: Time same but Different distance covered in each case Case #3: unknown variables Previous Articles I hope you’ve mastered the STD table method from earlier articles on Time and Work / Pipes and Cistern. We can use that STD method even [...]

## [Aptitude] PnC: All possible numbers using 012345, All possible words using ABCDE, Permutation Arrangement Made Easy with and without Formulas

Following types of questions pretty common in competitive exams: How many numbers of five digits can be formed with the digits 1,2,3,4 and 5, without repetition? How many words can be formed using all of the letters from A to E without repetition? How [...]

## [Aptitude] Long Division, Two-Digit Division, % Calculation without Tears (and without boring Vedic Maths) using % Approximation Method

Ok this isn’t about boring vedic maths technique so don’t run away, yet! One of  the biggest problem with IBPS/Bank, SSC, CAT, CMAT type of exams= you’ll encounter long division and percentage (%) calculation every now and then, directly or indirectly (in Data interpretation [...]

## [Tech] Using Microsoft Onenote to organize your study-notes: Image to text, Audio notes and more

To those readers who’ve Microsoft Office 2007, 2010 or 2013 installed in their computer. Why Microsoft Onenote? Step 1: Creating a new notebook Step 2: Basics (Sections and Pages) Step 3: Audio-notes for working Professionals Step 4: OCR (Image to Text) Why Microsoft Onenote? Microsoft Office [...]

## [Aptitude] Time n Distance: Early and late to office (shortcut using product consistency method) for SSC, IBPS, CSAT, CAT, CMAT

Case : Early Late Approach #1: Product consistency Approach #2 (STD Table) Case #2: Tappu’s school Approach #1: Product consistency Approach #2 (STD Table) Case: Pinku’s college (total time given) Mock Questions Answer and explanation Before proceeding further, make sure your concept regarding “product-consistency [...]

## What are semiconductor heterostructures ? How quantum wells are formed ? Give approximations of heterostructures using Schrodinger wave equation.

Aus. The revolutionary modification and engineering of materials can be accomplished by using heterostructures with nanoscale features. Heterostructures are structures with two or more abrupt interfaces at the boundaries between the different semiconductor materials. With modem material-growth techniques, it is possible to grow structures [...]