Tag Archives: electronics

Replacement a ballast

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 , , , | Leave a comment

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

Posted in Science and technologies | Tagged , , | Leave a comment

Kit for Transistor Circuits e-book by Colin Mitchell

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

Posted in Science and technologies | Tagged , , , , | Leave a comment

I bought a Tektronix TDS 310 oscilloscope.

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 , , , | 2 Comments

Journal of 2014/10/02

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 , , , , , , , | Leave a comment

Journal of 2014/09/22

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 , , , , , , | Leave a comment

Construct an Isolation Transformer

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

Posted in Science and technologies | Tagged , , | Leave a comment

What is battery drain current?

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 , , , , , | Leave a comment

Introduction to Generators and Motors

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

Posted in Science and technologies | Tagged , , , , | Leave a comment

220V to 110V step down transformer

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 , , , , , | Leave a comment