Tag Archives: electronics

Replacement a ballast

Posted on July 8, 2016 by janpenguin

I soldered four wires, some heat shrink tubes, and used three zip ties to mount the ballast and organize the wires.

Posted in DIY | Tagged ballast, DIY, electronics, Fluorescent lamp | Leave a comment

Getting started with an Arduino Mini – Header Pins and USB from an Arduino Uno

Posted on April 20, 2016 by janpenguin

Posted in Science and technologies | Tagged Arduino Mini, Arduino Uno, electronics | Leave a comment

Kit for Transistor Circuits e-book by Colin Mitchell

Posted on February 4, 2015 by janpenguin

Click to access 1-100TransistorCircuits.pdf Click to access 101-200TransistorCircuits.pdf

Posted in Science and technologies | Tagged Colin Mitchell, electronics, learning kit, Talking Electronics, transistors | Leave a comment

I bought a Tektronix TDS 310 oscilloscope.

Posted on January 27, 2015 by janpenguin

The welcome screen Tektronix “Committed to Excellence” TDS 310 Digitizing Oscilloscope (FV:v2.02) (c) Copyright, Tektronix, Inc., 1993. All rights reserved. Power-On self check PASSED Push CLEAR MENU to proceed. Starting self test All tests passed. I’ll have to buy pair … Continue reading →

Posted in Science and technologies | Tagged electronics, oscilloscope, TDS 310, Tektronix | 2 Comments

Journal of 2014/10/02

Posted on October 2, 2014 by janpenguin

Once I start laying earthbags, I plan to work 16 to 17 hours per day due to the nature of the job. It’s better be done without any rain interruption. Every day passes by, the day light gets shorter. The … Continue reading →

Posted in DIY | Tagged DIY, electronics, floor construction, house project, mouse, pine lumber, wood working, work light | Leave a comment

Journal of 2014/09/22

Posted on September 22, 2014 by janpenguin

I made a full pounder that is explained on Earthbag Building, Kaki Hunter and Donal Kiffmeyer. The full pounder weighs about 5.5 kg (12 pounds), shape is like plastic planter pot, 15 cm diameter, 17.5 cm height. I reduced diameter … Continue reading →

Posted in DIY | Tagged concrete, DIY, Earthbag, electronics, house project, pounder, work light | Leave a comment

Construct an Isolation Transformer

Posted on September 6, 2014 by janpenguin

I like the simple and clear explanation how to build an isolation transformer using two identical power transformer.

Posted in Science and technologies | Tagged electronics, isolation transformer, power transformer | Leave a comment

What is battery drain current?

Posted on September 5, 2014 by janpenguin

I think I had wrong type of batter for testing the 350mA Laser module the other day. Battery rating mAH doesn’t cover the drain current. http://www.batterysavers.com/Compare-Batteries.html Battery Type Typical Flashlight mAh Drain Capacity (mAh) Designed For Typical Drain (mA) D … Continue reading →

Posted in Science and technologies | Tagged AA, AAA, battery, drain current, electronics, mAH | Leave a comment

Introduction to Generators and Motors

Posted on August 7, 2014 by janpenguin

Navy Electricity andElectronics Training Series Module 5—Introduction to Generators and Motors NAVEDTRA 14177 Download link

Posted in Science and technologies | Tagged book, electricity, electronics, generator, motor | Leave a comment

220V to 110V step down transformer

Posted on September 14, 2012 by janpenguin

Update: I need to use two identical isolation transformers or buy a product. AC power: 2kVA Frequency: 60Hz Input voltage: 220V Output voltage: 110V Secondary current: 18.2A Insulation type: E 110V outlet has hot for short slot, ground for tall … Continue reading →

Posted in Science and technologies | Tagged 110V, 220V, AC power, electronics, step down, transformer | Leave a comment