File:Testing a transistor buffer for the footswitch.jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file ‎(3,648 × 2,736 pixels, file size: 4.17 MB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary[edit]

Description
English: A simple 1-transistor buffer circuit is used to amplify the current through the footswitch. The footswitch then only has to switch a few mA.

Here I am testing the circuit to be sure I've chosen a suitable transistor (2N3019). I dislike solderless breadboards for most applications due to unreliable connections and stray capacitance, but for something like this they work fine.

The 2 clip leads are connected to a jack plug in the footswitch socket on the back of the chassis.

The transistor goes into saturation when the 2 switch wires (blue leads on the breadboard) are shorted. It drops about 0.7V, so it's dissipating about 0.1W. Easily within its ratings.
Date
Source https://www.flickr.com/photos/43851301@N02/10014619156/
Author tony_duell

Licensing[edit]

w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by tony_duell at https://flickr.com/photos/43851301@N02/10014619156 (archive). It was reviewed on 27 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

27 December 2019

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current04:02, 27 December 2019Thumbnail for version as of 04:02, 27 December 20193,648 × 2,736 (4.17 MB)Ser Amantio di Nicolao (talk | contribs)User created page with UploadWizard

You cannot overwrite this file.

There are no pages that use this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Testing_a_transistor_buffer_for_the_footswitch.jpg&oldid=610990415"