iPad Screenshots


This App is meant to show the inner workings of a bipolar junction transistor operating as both an amplifier and as a binary switch.

It helps to show some concepts that maybe difficult to comprehend from a static picture in a textbook.

The first sequence of images "Struct" shows the steps necessary to create the structure of a common-emitter transistor configured to operate as an amplifier and then as a binary switch.

The second sequence of images "Amp" simply shows the transistor operating as an amplifier.
Hit the "PlayAll" button and just watch the operation.

The third sequence of images "Switch" simply shows the transistor operating as a binary switch.
Hit the "PlayAll" button and just watch the operation.

This is a now a free App but uses interstitial ads that will display, if available, after the segmentation control is selected. There are no banner ads and no in-app purchases.

What’s New

Version 2.0

This app has been updated by Apple to use the latest Apple signing certificate.

Compiled for iOS8.3
Slider control programming changed so faster image play is set by slider farther to the right, slower to the left.
Slider value reset to nominal after selecting a new set of images from the segmentation control.

Ratings and Reviews

1.0 out of 5
1 Rating

1 Rating

thephoton ,


Start it, figure out what you need to do (not explained within the app) and before you know it......CRASH! Rinse and repeat, or better yet Delete!

App Privacy

The developer, Charles L Ryder, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like