delabs news

A virtual 8051 is interfaced with virtual peripherals such as a keypad, motor, display, UART, etc. The student can write 8051 assembly code, step through the code and observe the effects each line has on the internal memory and the external peripherals.

.

Date Reminder reminds you of recurring or nonrecurring events, like birthdays, bills to pay, appointments etc... The program can be run from the Startup folder with an option to show only, if there are any alerts for this day.

• Read more about Date Reminder
• Add comment

Ian Sinclair's Practical Electronics Handbook combines a wealth useful day-to-day electronics information, concise explanations and practical guidance in this essential companion to anyone involved in electronics design and construction.

• Read more about Practical Electronics Handbook
• Add comment

delabs Notes - In a Circuit Module, if all Power and Signal Polarities are reversed. All NPN to PNP, All N-Channel to P-Channel and Vice Versa. All Diodes and Caps too turned around. This Topsy Turvy or Mirror Design ought to work in Theory. It has worked for some circuits in practice too in my experience. ? 

Some believe that N-Channel is more Robust than the P Type. In Bipolar Transistor NPN is more trusted for the final output stages. The NPN Transistor and N-Channel turn-on by a Positive control bias. It may be inappropriate to say this mosfet is NPN or PNP. 

• Read more about The MOSFET in Power Electronics
• Add comment

Rework and repair tools, soldering guns and irons and accessories. Desoldering Stations, Hot Air Stations, Portasol Irons/Hot Air Tools (Cordless Butane). They also have Soldering Gun Kits and Cleaning Tools. 

Soldering Tips by Weller

• Read more about Weller Soldering tools - Cooper Industries

Okular The Universal Document Viewer - Multi-platform, fast and packed with features, Okular allows you to read PDF documents, comics and EPub books, browse images, visualize Markdown documents.

• Read more about Okular Document Viewer
• Add comment

The LM3914 is a monolithic integrated circuit that senses analog voltage levels and drives 10 LEDs, providing a linear analog display. A single pin changes the display from a moving dot to a bar graph. Current drive to the LEDs is regulated and programmable, eliminating the need for resistors. This feature is one that allows operation of the whole system from less than 3V. LM3914 - Versatile and Easy use Display

• Read more about LM3914 - Dot Bar Display Driver
• Add comment

K-Meleon is a lightweight, customizable, open-source web browser. It's designed for Microsoft Windows (Win32) operating systems. K-Meleon can use the secure Goanna engine based on Mozilla's Gecko layout engine or Gecko itself.

• Read more about K-Meleon Gecko Browser
• Add comment

The Industrial Electricians Notebook - Free online electrical books selection that features interesting and timely subjects: electrical theory, electrical reference information, electrical equipment and maintenance data, industrial electronics, and electrical safety regulations. 

Kilowatt Classroom Electrical Training

• Read more about Kilowatt Classroom Electrical Training
• Add comment

Mojeek - The alternative search engine that puts the people who use it first. Mojeek Focus Dashboard.

• Read more about Mojeek alternative search engine
• Add comment

This tutorial discusses proper printed-circuit board (PCB) grounding for mixed-signal designs. For most applications a simple method without cuts in the ground plane allows for successful PCB layouts with this kind of IC.

• Read more about Successful PCB Grounding - Mark Fortunato
• Add comment

Reserves & Savings of delabs are being used up in the Maintenance of these Websites, Blogs and Services – delabs sections. delabs needs Sponsors, Donors or Advertisers to help continue the Services and Technology Blogs. Use PayPal to donate to my Email, see image below.

• Read more about Donate

Rates of Advertising Types, Sponsorship and Promotions in the delabs-dapj Websites, Services and Blogs. Modified Date - 27 Apr 2026

• Read more about Rates

KTechLab project. KTechLab is a an IDE for microcontrollers and electronics. It supports circuit simulation, program development for microcontrollers and simulating the programmed microcontroller together with its application circuit.

.

Picoload is a Program which makes it possible to program a microcontrolor peak 16f87X or 16F87XA from microchip without having has to remove this one of the assembly by means of a connection series RS232.

.

delabs needs Sponsors, Donors or Advertisers to help continue the Services and Technology Blogs. Use PayPal to donate to my Email, see image below. Appeal to Firms & Individuals who have benefited from our Ideas and Listings. Please reciprocate with donations to support delabs Ideas & Insights. 

Read more

I am having trouble preventing my rs latch from erroneously setting. The circuit is a voltage threshold detection circuit with a nand gate whose output is tied to a SR latch.

.

Over the last few days I’ve been playing around with an old small black and white tv….I did the infamous “Oscilloscope on your TV” thing that’s all over youtube and the rest of the web…grew bored with that, so I’ve decided I want to make it into a fully-functional scope that I can use in my lab.

.

Is it good as a (beginner) hobbyist to crave for an oscilloscope.  mail from EA – This scope will work from your PC Audio Card or Sound Card. 

.

I would like to buy a Microphone and either #1. an oscilloscope or #2. sound oscilloscope software. For hobby purposes, I would like to sample different sounds & view the various sound waves studying the amplitudes & frequencies.

.