Basic Electronics
NE5532 Pinout Datasheet Dual low noise op-amp
NE5532 is in Hi-Fi audio system a lot. Why? Read this datasheet, Get pinout, spec, how to use. For example preamplifier with tone control. Read more
Voltmeter: Working Principle and How to Increase the Range
My son want to make a simple DC voltmeter on 0-10V range by Convert a galvanometer to voltmeter.Galvanometer DC1mA is cheap and easy with one resistor only. Read more
How simple series circuit works
The experiment on the simple series circuit. To understand current flow and voltage across all devices in the circuit. Read more
Many ways to increase current transformer
To increase current transformer on the power supply. To save money with this idea, just only change connecting of on original transformer windings. Read more